Even if there aren't actually that many hydrogen ions floating around.

即便实际上没有那么多游离氢离子。

And current leaving your saliva through the other lead creates oxygen gas, leaving hydrogen ions behind.

通过另一端离开唾液的电流生成氧气，留下氢离子。

So when we say that the pH is the negative log of the hydrogen ion concentration...

因为10的2次方。

Meanwhile, sour-tasting acidic foods are high in hydrogen ions and take a different route by activating proton channels.

同时，酸味的酸性食物富含氢离子，通过激活质子通道采取不同的路线。

Because hydrogen ions, or protons, are pivotal to the behavior of acids and bases, which is what pH describes.

不过它也可能仅仅是。

Just as we can calculate the pH of a substance from it's hydrogen ion concentration, we can calculate the pOH.

就是一种在不同pH值环境中会显现不同颜色的化学物质。

The pH scale only really works down to 0, where there's one hydrogen ion for every molecule in the solution.

pH 值测量范围最低只能到0，此时溶液中每一个分子都能电离出一个氢离子。

One way the body can increase the blood pH is by moving hydrogen ions out of the blood and into cells.

机体提高pH值的一种方式是将氢离子从血中移入细胞内。

These hydrogen ions are what sour taste receptors in your taste buds pick up on; they're also found in acidic foods.

这些氢离子就是味蕾感受到酸味的原因， 它们也存在与酸性食物中。

One way the body can decrease blood pH is by moving hydrogen ions out of cells and into the blood.

机体降低血液pH的一种方法是将氢离子移出细胞进入血液。

And stomach acid, with a pH of 1, gives one hydrogen ion for every ten other molecules.

pH 为1的胃酸，每十个分子就电离出一个氢离子。

These substances are hydrogen ions, creatinine, and drugs.

这些物质是氢离子、肌酐和药物。

(4). Regulation of plasma hydrogen ion concentration (pH).

(4)。调节氢离子浓度(pH)。

See, carbonate and hydrogen ions can combine to make bicarbonate, which is much less acidic.

你看，碳酸盐和氢离子可以结合生成碳酸氢盐，它的酸性要低得多。

So there's five main buffers in the blood and in the kidney filtrate that the body can use to buffer hydrogen ions.

所以血液和肾脏滤液中有五个主要的缓冲剂，身体可以用来缓冲氢离子。

Remember the hydrogen ion produced along with bicarbonate in the red blood cell?

还记得红细胞中与碳酸氢根一起产生的氢离子吗？

That unmistakable sour flavor that prickles you tastebuds is a product of the hydrogen ions that acids release when they combine with saliva.

刺痛味蕾的那种明显的酸味是酸与唾液结合时释放的氢离子的产物。

Phosphate ion has a three charge, so it bonds with three hydrogen ions to form phosphoric acid.

磷酸根离子带有三个电荷， 因此它与三个氢离子结合形成磷酸。

Similarly, the sulfate ion needs just two hydrogen ions to form sulfuric acid. You get the idea.

同样，硫酸根离子只需要两个氢离子就可以形成硫酸。 你明白了。

Where does the hydrogen ion come from?

氢离子从哪里来？