单词 | ferricyanide |
例句 | They then filled the chamber with ionically charged liquid called ferricyanide. Energy ‘scavenger’ could turn waste heat from fridges and other devices into electricity 2020-09-11T04:00:00Z Cyanotype is a photographic medium that uses ferric ammonium citrate, potassium ferricyanide, and simple sunlight to make an image. The Surprising Subject of the First Book of Photographs 2011-12-23T18:45:04.903Z Wool is dyed by heating it in a solution containing potassium ferricyanide and sulphuric acid. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z We do not expect to obtain the results of a ferruginous treatment from the administration of a ferrocyanide or a ferricyanide. The Mechanism of Life I have here in solution uranium nitrate, plus potassium ferricyanide acidified with acetic acid. Spawn of the Comet To reduce the heat carried by these moving ions, Zhou and his colleagues spiked their ferricyanide with a positively charged organic compound called guanidinium. Energy ‘scavenger’ could turn waste heat from fridges and other devices into electricity 2020-09-11T04:00:00Z But the best of the lot is a solution of the two substances potassium ferricyanide and potassium bromide, which forms an image of silver ferrocyanide and silver bromide. Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements The preparation is even sensitive enough to permit one to obtain an impression in the camera obscura in developing by the ferricyanide.” Photographic Reproduction Processes It was subjected to a series of treatments with ferric ferricyanide, and the proportion of Prussian blue fixed was determined by increase of weight, viz. from 10 p.ct. to 47 p.ct. according to the conditions. Researches on Cellulose 1895-1900 The ferricyanide had a small influence and, as might be expected, hyposulphite is fatal to the assay. A Text-book of Assaying: For the Use of Those Connected with Mines. If the film is then plunged into solution of potassium ferricyanide it becomes red or blue, while the lines traced show by their different reaction that they consist of ordinary silver. Scientific American Supplement, No. 832, December 12, 1891 The ferricyanide-bromide mixture, however, keeps very much better than a plain solution of ferricyanide alone. Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements Expose until the image is visible, then develop by floating on a solution of potassium ferricyanide at 5 per 100 of water—the image appears at once with a rich brown color. Photographic Reproduction Processes The prints in Prussian blue are produced in a similar manner, the sensitive salt with which the calico is prepared being ammonium ferricitrate, and the developer potassium ferricyanide. Scientific American Supplement, No. 810, July 11, 1891 To determine the finishing point, place a series of drops of the ferricyanide solution on a dry white glazed plate. A Text-book of Assaying: For the Use of Those Connected with Mines. Prepare a fresh solution, as needed each day, by dissolving a crystal of potassium ferricyanide about the size of a pin's head in 25 cc. of distilled water. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes Potassium ferricyanide costs about twenty cents per pound, and a pound is ample for a lifetime. Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements The methods of Lenssen, or ferricyanide of potassium method, yields very widely differing results. Scientific American Supplement, No. 324, March 18, 1882 In the case of many formulae, it will be noticed that equal quantities of bromide and ferricyanide are recommended. Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements Some of these, ferrocyanide and ferricyanide of potassium for example, have such characteristic properties that the fact that they are cyanides may be overlooked. A Text-book of Assaying: For the Use of Those Connected with Mines. In case of need, the ferricyanide can be purified by adding to its solution a little bromine water and recrystallizing the compound. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes The first of these is the “bleach,” or oxidizing mixture of bromide and ferricyanide. Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements If not washed long enough, the yellow of the ferricyanide will remain in the print, robbing its gradations of brightness and purity of color and impairing the permanency of the print. Bromide Printing and Enlarging A Practical Guide to the Making of Bromide Prints by Contact and Bromide Enlarging by Daylight and Artificial Light, With the Toning of Bromide Prints and Enlargements The important oxidizing agents employed in volumetric solutions are potassium bichromate, potassium permangenate, potassium ferricyanide, iodine, ferric chloride, and sodium hypochlorite. An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes |
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