| 单词 | sulphur dioxide |
| 例句 | The stench of sulphur dioxide is a real downer when you're on the hunt for a cream tea. Discover white-knuckle England with this handy holiday guide… 2013-04-27T23:05:40Z Adding sulphur dioxide helps "clarify and lighten the color of cane juice, but it imparts a distinct smell," according to The Food Encyclopedia. 9 best molasses substitutes when your jar is empty 2021-12-26T05:00:00Z It also "leads to the loss of sulphur dioxide, which preserves the wine," he says, and dissipates aromas. How long does that open bottle of wine last, really? 2022-06-04T04:00:00Z Authorities later said the area around Grindavik was evacuated after sulphur dioxide was detected, sparking fears of a nearby opening in the ground. Watch: BBC evacuated from Icelandic volcano town 2023-11-14T05:00:00Z The project entails converting sulphur dioxide into sulphuric acid, which is then neutralised with limestone to generate gypsum waste. Nornickel starts sulphur dioxide capture in Russia's most polluted city 2023-10-25T04:00:00Z This not only releases large amounts of CO2, but also produces toxic gases such as sulphur dioxide. Generating clean electricity with chicken feathers 2023-10-20T04:00:00Z For example, proposals to limit global warming by sending millions of tonnes of sulphur dioxide into the upper atmosphere - known as stratospheric aerosol injection - could drastically reverse the ozone layer's recovery. Ozone layer may be restored in decades, UN report says 2023-01-09T05:00:00Z It generally is not used as a fuel because of emissions, but is widely used by the cement industry as its sulphur dioxide emissions are absorbed by limestone. EXCLUSIVE Maroil takes over most of Venezuela's petroleum coke trading 2022-09-21T04:00:00Z The rising clouds are mostly composed of water vapour, but also include carbon dioxide and sulphur dioxide. Physical Geology 2015-01-01T00:00:00Z Barrie, L. A. & Hoff, R. M. The oxidation rate and residence time of sulphur dioxide in the Arctic atmosphere. An Introduction to Geology 2017-01-01T00:00:00Z Air is sucked through the filters, capturing allergens and pollutants such as nitrogen and sulphur dioxide and brake dust. Dyson headphones come with air vacuum for mouth 2022-03-30T04:00:00Z The Ministry of Ecology and Environment said average concentrations of all major pollutants - including ground-level ozone, sulphur dioxide, nitrogen dioxide and carbon monoxide - fell in the 339 monitored cities last year. China says average national smog levels down 9.1% in 2021 2022-01-31T05:00:00Z The chief way volcanoes do this is by injecting vast quantities of sulphur dioxide into the atmosphere. Why satellites are key to understanding Pacific volcano 2022-01-16T05:00:00Z As is typical in magmatic regions, water is the main volatile component, followed by carbon dioxide and sulphur dioxide. Physical Geology 2015-01-01T00:00:00Z Molten rock leaked into the ocean which increased the size of the island, boiled sea water and released the toxic gas sulphur dioxide. Spain's La Palma volcano eruption declared over after three months 2021-12-25T05:00:00Z Emissions of sulphur dioxide, which had forced a lockdown of a third of the island's population before the volcano went silent, were "extremely low" on Tuesday, Involcan said. End of eruption? Spanish volcano calm for second day 2021-12-15T05:00:00Z The quiet on Monday evening and Tuesday morning followed the emission of dense toxic clouds of sulphur dioxide on Monday morning that prompted the lockdown of about a third of the island's population. La Palma volcano's tremors stop, but eruption may not be at an end 2021-12-14T05:00:00Z The EU's Sentinel-5P satellite can map the quantity and spread of sulphur dioxide. Why satellites are key to understanding Pacific volcano 2022-01-16T05:00:00Z As we discussed in Chapter 4, volcanic eruptions don’t just involve lava flows and exploding rock fragments; various particulates and gases are also released, the important ones being sulphur dioxide and CO2. Physical Geology 2015-01-01T00:00:00Z Residents in the capital Santa Cruz had been advised to wear masks for the first time since the eruption began due to high concentrations of particulate matter and sulphur dioxide in the air, he said. Coastal towns locked down in La Palma as lava crashes into ocean 2021-11-22T05:00:00Z Even more alarming for the people of this province, according to the Centre for Research on Energy and Clean Air, is that South Africa is the world's biggest emitter of sulphur dioxide. COP26: South Africa hails deal to end reliance on coal 2021-11-02T04:00:00Z The cause: Clouds of sulphur dioxide from coal-burning power plants are travelling long distances in the air and falling back to Earth in the form of acidic rain. Climate change: The environmental disasters we've almost fixed 2021-10-24T04:00:00Z Other pollutants singled out in the guidelines include ozone, nitrogen dioxide, sulphur dioxide and carbon monoxide. Air pollution: Even worse than you thought - WHO 2021-09-22T04:00:00Z There is also a potential danger from sulphur dioxide gas. Iceland volcano: Lava-spewing Fagradalsfjall 'subsiding' 2021-03-20T04:00:00Z Acid rain occurs when sulphur dioxide and nitrogen oxides react with moist air to form weak acids, which then fall from clouds, killing plants and aquatic life. 'We've had so many wins': why the green movement can overcome climate crisis 2020-10-12T04:00:00Z These other targets include ozone, formaldehyde, sulphur dioxide, methane, and carbon monoxide. Coronavirus: Dirty air 'on the rise again' in UK cities 2020-07-09T04:00:00Z Concentrations of ground-level ozone, sulphur dioxide and nitrogen dioxide also rose over the month, the official data showed. China smog rises in April for first time this year 2020-05-18T04:00:00Z In time, GHGSat wants to fly sensors to monitor carbon dioxide and sulphur dioxide as well. Methane observer eyes UK for analytics base 2020-05-14T04:00:00Z But, he said, high levels of sulphur dioxide were the "tell-tale sign" that prompted the alert level to be upgraded. The privately-owned volcano that is always active 2019-12-09T05:00:00Z This creates a lethal cocktail of particulate matter, carbon dioxide, nitrogen dioxide and sulphur dioxide - all worsened by fireworks set off during the Hindu festival Diwali a week ago. India air pollution at 'unbearable levels' 2019-11-03T04:00:00Z Smoke particles and sulphur dioxide were tracked by a new air pollution laboratory. How clean air transformed American cities 2019-03-17T04:00:00Z Premier Li on Tuesday said China would cut key pollutants like sulphur dioxide and nitrogen oxide by 3 percent this year. Northern China pollution soars in February: official data 2019-03-04T05:00:00Z Consistency is another challenge, says Ms Granik, because many Georgian wineries do not add any sulphur dioxide to their bottles to act as a preservative. Can Georgian wine win over global drinkers? 2019-02-27T05:00:00Z But North Korean facilities lack sufficient filtering, so using more coal of any kind would likely lead to more carbon dioxide, sulphur dioxide and nitrogen oxide emissions, he said. North Korea's push to use more coal clouds environmental future 2019-01-28T05:00:00Z As well as trying to deal with the major sources of particulate matter, the government's plan also deals with pollution that arises from ammonia, sulphur dioxide and non-methane volatile organic compounds. 'Bold new goal' to tackle dirty air 2019-01-13T05:00:00Z When burned, it produces much less carbon dioxide, sulphur dioxide and particulates. Could chip fat help dirty shipping clean up its act? 2018-10-15T04:00:00Z The scientists compared the test results with records of nitrogen dioxide and sulphur dioxide pollution. Air pollution causes ‘huge’ reduction in intelligence, study reveals 2018-08-27T04:00:00Z But campaigners say the sulphur levels are still too high, resulting in emissions of fine particles and sulphur dioxide harmful to human health. 'I don’t want ships to kill me': Marseille fights cruise liner pollution 2018-07-06T04:00:00Z This is the main natural source of sulphur dioxide in the atmosphere. Eye in the sky gives polluters nowhere to hide 2018-07-04T04:00:00Z Some of these gases, such as sulphur dioxide, reduce air quality and cause breathing problems, especially among risk groups such as asthmatics. Volcano's dramatic images explained 2018-05-19T04:00:00Z It said there were deadly levels of dangerous sulphur dioxide gas in the air and emergency crews would not be able to help anyone affected. Fresh eruptions from Hawaii volcano 2018-05-04T04:00:00Z Last year, they began deploying drones fitted with high-end gas sensors that are able to hover over the city’s myriad factories and detect pollutants such as sulphur dioxide, nitrogen dioxide and PM2.5. Dongguan in the spotlight: hi-tech comeback for 'factory of the world'? 2018-02-16T05:00:00Z In Tokyo, Japan, scientists found elevated suicide risk among under-30s was linked to NO2 and in Guangzhou, China, sulphur dioxide also showed a correlation. Air pollution linked to ‘extremely high mortality’ in people with mental disorders 2018-01-26T05:00:00Z Scientists later detected large amounts of toxic sulphur dioxide emitting from the volcano. Islanders flee Papua New Guinea volcano 2018-01-14T05:00:00Z After venting ash for several days, the volcano exploded on Friday, blasting out glowing red rocks and sulphur dioxide, the Rabaul Volcanological Observatory said in a bulletin. People evacuated from Papua New Guinea island after volcano explodes 2018-01-14T05:00:00Z These include nitrogen dioxide, ozone, formaldehyde, sulphur dioxide, methane and carbon monoxide. UK-built satellite targets air pollution 2017-10-12T04:00:00Z The province will also aim to cut concentrations of sulphur dioxide - a key component of smog - by 40 percent over the October-March period, Xinhua said, citing the province’s environmental protection bureau. China's top coal province pledges 40 percent smog cut over winter 2017-10-11T04:00:00Z It found that sulphate particles formed from sulphur dioxide sources such as coal power plants and refineries were a key cause. Trump’s pro-coal agenda is a blow for clean air efforts at Texas' Big Bend park 2017-10-11T04:00:00Z But sulphur dioxide, which is produced naturally in wine-making, is generally considered harmless. Can prosecco ever be hangover-free? 2017-10-10T04:00:00Z After venting ash for several days, the volcano exploded on Friday, blasting out glowing red rocks and sulphur dioxide, the Rabaul Volcanological Observatory said in a bulletin. People evacuated from Papua New Guinea island after volcano explodes 2018-01-14T05:00:00Z Matter ejected by them—particularly sulphur dioxide, which reacts with atmospheric gases to form sulphate aerosols—reflects sunlight back into space, cooling the air beneath. Events in Iceland explain years of famine in Europe’s Dark Ages 2017-07-18T04:00:00Z The province will also aim to cut concentrations of sulphur dioxide - a key component of smog - by 40 percent over the October-March period, Xinhua said, citing the province’s environmental protection bureau. China's top coal province pledges 40 percent smog cut over winter 2017-10-11T04:00:00Z To this day, winemakers use sulphur dioxide to preserve the flavor and freshness of wines. Myths about Sulfites and Wine 2017-07-15T04:00:00Z He acknowledges that organic wine probably does contain fewer sulphites, namely sulphur dioxide. Can prosecco ever be hangover-free? 2017-10-10T04:00:00Z In 1956, Parliament passed the Clean Air Act to tackle smoke and sulphur dioxide. Viewpoint: The trouble with diesel - BBC News 2017-01-31T05:00:00Z A further toxic cloud rolled across the land as sulphur dioxide stockpiled nearby caught fire. Iraqi sheep, locals, environment suffer Islamic State oil fires 2017-01-19T05:00:00Z Defenders say Kusile has been designed with advanced technology that will minimise its environmental impact, such as scrubbers to control sulphur dioxide and filters to reduce emissions of dangerous particulates. Obama's dirty secret: the fossil fuel projects the US littered around the world 2016-12-01T05:00:00Z But if the probe detects sulphur dioxide instead of large organic compounds, the odds will favour a geological origin for the methane. ExoMars spacecraft sets off in search of alien life 2016-03-14T04:00:00Z Cheap coal and diesel across India pump out sulphur dioxide, ash, and fine toxic particles. The city in love with cars even though its air is toxic - BBC News 2016-01-16T05:00:00Z IF A fine powder combining arsenic, black carbon, formaldehyde, nickel, sulphur dioxide and nitrogen oxide sounds unpleasant, imagine how it would be if 200 tonnes of it were dumped on your town every day. Particular about particulates 2016-01-14T05:00:00Z In the 1990s America used emissions trading to reduce the amount of sulphur dioxide produced by coal-fired power plants. The best is the enemy of the green 2015-12-03T05:00:00Z "For example, in Iran the energy consumption and CO2 have continued to grow but NOx and sulphur dioxide have declined. There isn't a general rule that you can apply in emissions scenarios." Middle East conflict drastically 'improves air quality' - BBC News 2015-08-21T04:00:00Z Taunting in its perpetuity is the steam and bluish haze of sulphur dioxide emitted from the slumbering monster in the south, whose constant threat pervades the atmosphere like a viscous liquid. Montserrat: Living with a volcano - BBC News 2015-08-15T04:00:00Z The crops began to suffer: untreated effluent in the water, heavy metals in the soil, sulphur dioxide in the air. China struggles to contain the environmental damage of its rapid growth - BBC News 2015-07-15T04:00:00Z Haze reduces visibility and is caused by nitrogen oxide and sulphur dioxide pollution. Court sends coal pollution rules back to EPA 2015-06-10T04:00:00Z Digital displays monitored emission levels of sulphur dioxide, carbon monoxide and other pollutants. Keep the fires burning 2015-04-23T04:00:00Z Maybe as much as 100 million tonnes of sulphur dioxide aerosol spread as a blanket around the globe, acting like a planetary sunshade. Warning over aerosol climate fix 2015-04-16T04:00:00Z But the six-month event also released 11 million tonnes of sulphur dioxide that spread over the country and the Atlantic Ocean towards Europe. Bardarbunga eruption gases estimated 2015-04-15T04:00:00Z The review looked at a range of possible pollutants - from gases such as sulphur dioxide, nitrogen dioxide and carbon monoxide to fine soot particles known as PM 2.5. Air pollution 'link to stroke risk' 2015-03-24T04:00:00Z It did so by pumping 20 million tonnes of sulphur dioxide high into the sky above the Philippines. 'Next Pinatubo' to test geoengineering 2015-02-14T05:00:00Z In June 1991 Mt Pinatubo in the Philippines erupted, releasing millions of tons of sulphur dioxide into the atmosphere. World on course for warmest year 2014-12-03T05:00:00Z But delaying sulphur dioxide mitigation as a way to temporarily mask global warming is problematic. Air pollution: Clean up our skies 2014-11-18T05:00:00Z Some of the sulphur dioxide will have mixed with water in the atmosphere to produce acidic precipitation, and values down to pH 3 were recorded in ices on the glacier network that surrounds Bardarbunga-Holuhraun. Bardarbunga eruption gases estimated 2015-04-15T04:00:00Z In the environmental arena, the emissions allowance program enacted to control emissions of sulphur dioxide was much more effective —and much cheaper —than early estimates had suggested. Tackling Climate Change Will Cost Less Than We Think 2014-09-24T04:00:00Z In small-town workhouses, disposable chopsticks are typically bleached with hydrogen peroxide, polished with paraffin and treated with sulphur dioxide to prevent mould. Sticks in the gullet 2014-09-11T04:00:00Z The research, conducted by consultancy Amec, looked at the incidence of pollutants like particulate matter, sulphur dioxide and nitrogen dioxide and their effect based on different indicators. Boris: Pedestrian roads 'soulless' 2014-09-10T04:00:00Z While elemental sulphur itself doesn't smell, this odour- of sulphur dioxide - is only one of a panoply of stinks that sulphur compounds can produce. Up to our necks in a diabolical element 2014-07-18T04:00:00Z By allowing us to operate fewer coal plans, the nuke plants also prevent us from spilling millions of tons of sulphur dioxide and nitrogen oxide into the air. The White House's Climate Assessment Heats Up The Discussion About Nuclear Power 2014-05-16T04:00:00Z It shows a concentration for sulphur dioxide in the atmosphere. Met Office volcano study due in June 2014-05-01T14:37:18Z Leaving aside the Sahara dust, the pollution is made up of various substances, including nitrogen dioxide, sulphur dioxide and ammonia. UK air pollution: How bad is it? 2014-04-02T17:12:44Z Other pollutants from traffic, industry and agriculture already covered by EU law are larger particulates, nitrogen oxides and sulphur dioxide, ammonia and volatile organic compounds, which contribute to ground ozone formation. Draft Pollution Law Seeks to Tackle Lethal European Air 2013-12-18T16:45:07.287Z It is called "sour", because when it burns it produces those pungent sulphur dioxide fumes. Up to our necks in a diabolical element 2014-07-18T04:00:00Z They leaked toxic gases such as ammonia, methyl chloride and sulphur dioxide, which damaged the respiratory system and could easily lead to death. 10 dangerous things in Victorian/Edwardian homes 2013-12-10T04:07:26Z These results show that, in regions of the atmosphere near amine sources, both amines and sulphur dioxide should be considered when assessing the impact of anthropogenic activities on particle formation. Molecular understanding of sulphuric acid–amine particle nucleation in the atmosphere 2013-10-16T17:22:18.533Z First the carbon dioxide, sulphur dioxide, nitrogen oxides, and heavy metals like mercury are scrubbed from the waste gases. Construction Begins on New Carbon-Capture Plant 2013-10-03T22:15:00.650Z This is different from the carbon dioxide produced by other kinds of power plants, which is mixed with gases such as nitrogen oxides and sulphur dioxide. Could power plants of the future produce zero emissions? 2013-09-26T23:38:42Z Three decades ago, however, the most cost-effective ways to reduce local air pollution from power plants involved using technologies that removed particulates and sulphur dioxide but left in the CO2. How Cleaning China’s Dirty Air Can Slow Climate Change 2013-08-05T10:00:32Z The team compared the Dragon Eye's measurements of sulphur dioxide to those made by the Terra satellite in an effort to calibrate the space-based readings. Drones in science: Fly, and bring me data 2013-06-12T17:50:28.960Z In 2003, scientists extracted the DNA of two wheat pathogens from archived samples dating back to 1843 and showed that industrial sulphur dioxide emissions affected which one was dominant. Long-term research: Slow science 2013-03-20T18:20:31.753Z Gases detected from the heating of this fine-grained material included water vapour, carbon dioxide, oxygen and sulphur dioxide. Rover's big lab up and running 2012-12-04T02:50:53Z "They brought pressure tanks, cool fermenting systems, cultured yeasts and knowledge about how to use sulphur dioxide to predict the wine and the juice," says Australian wine writer Huon Hooke. Britain toasts Australian wines 2012-11-13T00:05:58Z Shipping fuels with a high sulphur content lead to emissions of sulphur dioxide and particulate matter. EU Agrees to Strict Limits on Sulfur-Belching Ships 2012-10-29T16:15:04.900Z The results have guided lawmakers in Canada and the United States to regulate sulphur dioxide and mercury emissions. Test lakes face closure 2012-08-22T17:20:28.163Z "This shows that the decreases in sulphur dioxide are a direct consequence of the application of the EU requirements," the Commission said in a statement. Sulfur Emissions Down 66% from EU Port Ships Since 2010 2012-08-15T03:45:24.717Z They range from mimicking the effects of large volcanic eruptions by releasing sulphur dioxide into the atmosphere, to deploying giant mirrors in space to deflect the sun's rays. Scientists warn geoengineering may disrupt rainfall 2012-06-06T13:38:20Z This study looks at the impact of aerosols — such as sulphur dioxide particles ejected by volcanoes and linked to the burning of coal — on sea surface temperatures there. Bolstering the link 2012-04-04T17:20:00.873Z A study published last week by researchers at Environment Canada in Toronto used satellite measurements to analyse emissions of nitrogen dioxide and sulphur dioxide from the oil sands2. Should the Canadian Oil Sands Be Developed? 2012-02-28T19:45:03.797Z Such systems have even been shown to be effective, reducing sulphur dioxide pollution from US power plants. Whales for sale 2012-01-11T18:20:05.727Z "The study also confirms a correlation between sulphur dioxide and chemical elements typically emitted from ship stacks, which demonstrates that ships were the main source of sulphur dioxide in the harbors." Sulfur Emissions Down 66% from EU Port Ships Since 2010 2012-08-15T03:45:24.717Z After concentration the liquors are bleached by blowing in sulphur dioxide, manufactured by burning sulphur; by this means the colour can be lightened to any desired degree. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z After being well washed with water to remove all traces of hydrochloric acid, the bones are bleached by leading in sulphur dioxide. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z Gases soluble in water, such as ammonia, hydrochloric acid, sulphuretted hydrogen, sulphur dioxide, &c., are estimated by passing a known volume of the gas through water and titrating the solution with a standard solution. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z Sometimes bombs filled with liquid sulphur dioxide are purchased for this purpose. The Philippine Agricultural Review Vol. VIII, First Quarter, 1915 No. 1 2011-04-13T02:00:12.527Z Smelting operations release sulphur dioxide and other pollutants which have severely affected residents with various skin, eye and respiratory diseases. Special Report: The biggest company you never heard of 2011-02-25T07:43:02Z Pollution also creates gases - sulphur dioxide, carbon monoxide, nitrogen dioxide and ozone. Cyclists 'unaware of health risk' 2011-01-28T03:30:42Z They are easily reduced in acid solution by sulphuretted hydrogen, and also by sulphur dioxide to chromium salts. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z While it is expected to remain the nation's top power fuel for decades, the industry faces curbs on sulphur dioxide and nitrogen oxide emissions and at least a chance of more sweeping restrictions from Congress. Oxford could fall short of dividend promise 2010-07-09T23:19:00Z The Shah scheme is to pump and purify gas with a high content of potentially deadly sulphur dioxide, making it tougher and more expensive to produce than conventional gas. UAE's ADNOC awards $5.6 billion worth of contracts for Shah 2010-05-01T15:37:00Z Combustion gases including carbon dioxide, sulphur dioxide, and carbon monoxide did not reach levels of concern. Spill Response: Burn Baby Burn 2010-04-28T17:12:00Z "The Canadian meteorological service, Environment Canada folks, are not seeing any volcanic ash or sulphur dioxide clouds," said Jeff Osiensky, the volcanic ash program manager for the U.S. Volcanic ash cloud hits North American coast 2010-04-19T19:30:00Z Sulphuretted hydrogen and sulphur dioxide reduce them in acid solution to the condition of chromium salts. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z But soon an even worse problem was on the way - the most severe winter for 250 years, caused by the build-up of heat absorbing sulphur dioxide in the stratosphere. The eruption that changed Iceland forever 2010-04-16T11:18:00Z They also said that low levels of sulphur dioxide are likely to be found in the plume but this is also not expected to be a threat to human health. Ash advice 2010-04-16T10:08:00Z One of the most influential ever eruptions was the when an estimated 120 million tonnes of sulphur dioxide were emitted, approximately equivalent to three times the total annual European industrial output in 2006. Volcano ash 'no health threat' 2010-04-15T12:25:00Z He said volcanic eruptions throw up dust, ash and sulphur dioxide. Blast from past 2010-04-15T09:15:00Z Sometimes it looks like blue smoke, it is so full of gases, especially sulphur dioxide, the gas that is given off by burning sulphur. Unexplored! The goods are left thus exposed to the sulphur dioxide overnight, when they are taken out and washed in water. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" It burns with a pale blue flame to form carbon dioxide and sulphur dioxide. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" "This outpouring of sulphur dioxide during unusual weather conditions caused a thick haze to spread across Western Europe, resulting in many thousands of deaths throughout 1783 and the winter of 1784." Volcano ash 'no health threat' 2010-04-15T12:25:00Z Before the Bp. on Ch. in O. F. intumesces with evolution of sulphur dioxide, finally yielding a metallic globule of Ag. The Elements of Blowpipe Analysis Hot air is blown into the filtrate, which contains ferrous or calcium chlorides, to expel the excess of sulphur dioxide, and the liquid can then be used again. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" It burns when heated in air, forming the pentoxide and sulphur dioxide. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 "Cockaigne" to "Columbus, Christopher" One of the earliest known and technically most important instances of catalysis is that of the oxidation of sulphur dioxide to sulphuric acid by oxygen in the presence of oxides of nitrogen. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The acid commonly used is made by the "contact" process, in which sulphur dioxide is oxidized to sulphur trioxide, and then, with the addition of water, changed to sulphuric acid. The Automobile Storage Battery Its Care And Repair Heated in an ignition tube it yields sulphur dioxide. The Elements of Blowpipe Analysis When a gaseous disinfectant is to be used sulphur dioxide or formaldehyde is employed, with the tendency lately to replace the former by the latter. The Home Medical Library, Volume V (of VI) Waters contain also certain acid and gaseous substances, the most common of which is carbon dioxide; and less widespread, but locally abundant, are chlorine and sulphur dioxide. The Economic Aspect of Geology Other well-known and remarkable examples are the catalysis of the combustion of hydrogen and of sulphur dioxide in oxygen by finely-divided platinum. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Why is it necessary that the fabric be moist in order to be bleached by sulphur dioxide fumes? Textiles For Commercial, Industrial, and Domestic Arts Schools; Also Adapted to Those Engaged in Wholesale and Retail Dry Goods, Wool, Cotton, and Dressmaker's Trades We brought that and the glass, the cement, more lumber, and the drum of sulphur dioxide. The Forbidden Trail In the pot methods crude sulphur, preferably ground, is used; it is placed in an iron pot and ignited by the aid of alcohol, and in the burning evolves the sulphur dioxide gas. The Home Medical Library, Volume V (of VI) I never cared particularly for hydrogen sulphide and sulphur dioxide, either," he assured her, "but they aren't strong enough to hurt us in the short time we'll be here. Spacehounds of IPC Because of this reaction sodium sulphite is used as a convenient source of sulphur dioxide. An Elementary Study of Chemistry Instead of using the gas, the sulphur dioxide may be applied in the form of a solution in water. The Dyeing of Woollen Fabrics It had been a hard day and none of the three men were wakened by the smell of sulphur dioxide that began to hang over the camp at midnight. The Forbidden Trail When a solution of sulphurous acid is employed, exposure of the liquid to the air suffices to disengage the sulphur dioxide necessary for disinfection. The Home Medical Library, Volume V (of VI) This solution with excess of sulphur dioxide yields the "bisulphite of lime" of commerce, which is used in the "chemical" manufacture of wood-pulp for paper making. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" They are first roasted in the air, by which treatment much of the sulphur is burned to sulphur dioxide. An Elementary Study of Chemistry When all is ready the chamber doors are closed, and the furnaces are heated, some sulphur thrown upon them, which burning evolves sulphur dioxide gas, sulphurous acid, and this acting upon the wool bleaches it. The Dyeing of Woollen Fabrics The odor of sulphur dioxide filled the night. The Forbidden Trail It cannot be prepared with any degree of purity by the action of concentrated sulphuric acid on bromides, since secondary reactions take place, leading to the liberation of free bromine and formation of sulphur dioxide. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" The sulphur and arsenic of such minerals as mispickel and pyrites are oxidised by the hot air and pass off as sulphur dioxide and "white arsenic." A Text-book of Assaying: For the Use of Those Connected with Mines. Show that the preparation of sulphur dioxide from a sulphite is similar in principle to the preparation of hydrogen sulphide. An Elementary Study of Chemistry The acid liberates sulphur dioxide in a nascent condition, which then exerts a more powerful bleaching action than if it were already free. The Dyeing of Woollen Fabrics Gustav brought with him, too, the refilled drums of sulphur dioxide. The Forbidden Trail They are decomposed by chlorine, with liberation of bromine and formation of metallic chlorides; concentrated sulphuric acid also decomposes them, with formation of a metallic sulphate and liberation of bromine and sulphur dioxide. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Sulphurous Acid, H2SO3.—The reagent used may be regarded as a saturated solution of sulphur dioxide in water. A Text-book of Assaying: For the Use of Those Connected with Mines. What weight of sulphur dioxide is necessary in the preparation of 1 kg. of sodium sulphite? An Elementary Study of Chemistry What was the error, percentage error, and what weight of sulphur dioxide was in the solution? An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes We need some sulphur, but not in the form of sulphur dioxide or concentrated sulphurous acid, both of which are used in the manufacture of food. Maintaining Health Formerly Health and Efficiency From this fissure large volumes of steam issue, accompanied by hydrogen, nitrogen, carbon dioxide, hydrochloric acid, and sulphur dioxide. The San Francisco calamity by earthquake and fire It is impossible to prepare this acid in pure form, as it breaks down very easily into water and sulphur dioxide. An Elementary Study of Chemistry No equilibrium can therefore result, since the quantity of the sulphurous acid is constantly being diminished because of the escape of sulphur dioxide. An Elementary Study of Chemistry The reactions are quite involved, but the conversion of water, sulphur dioxide, and oxygen into sulphuric acid is accomplished by the catalytic action of oxides of nitrogen. An Elementary Study of Chemistry Purified sulphur dioxide and air are passed through the tubes, which are kept at a temperature of about 350°. An Elementary Study of Chemistry The nitrogen dioxide formed in this reaction can now enter into combination with a new quantity of sulphur dioxide, steam, and oxygen, and the series of reactions go on indefinitely. An Elementary Study of Chemistry Three general ways may be mentioned for the preparation of sulphur dioxide: 1. An Elementary Study of Chemistry The reactions are brought about in large lead-lined chambers, into which oxides of nitrogen, sulphur dioxide, steam, and air are introduced in suitable proportions. An Elementary Study of Chemistry When sulphur dioxide dissolves in water it combines chemically with it to form sulphurous acid, an unstable substance having the formula H3SO3. An Elementary Study of Chemistry The fiber, covered with fine platinum, is placed in a tube of hard glass, which is then heated with a burner to about 350°, while sulphur dioxide and air are passed into the tube. An Elementary Study of Chemistry The equivalent, as obtained by an analysis of sulphur dioxide, is 16.03. An Elementary Study of Chemistry The sulphur burns to sulphur dioxide, while the mercury is converted into vapor and is condensed in a series of condensing vessels. An Elementary Study of Chemistry When a sulphite is treated with an acid, sulphurous acid is set free, and being very unstable, decomposes into water and sulphur dioxide. An Elementary Study of Chemistry |
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