10%的漂白粉溶液相当于多少mg/L的含氯消毒剂？

石桥wshh1975

font=Times New Roman]某进口眼底镜的说明书上的消毒方法如下：
Bleach, 10% solution mixed at: 1 part bleach to 9 parts water, Recommended exposure time = 10 minutes。
我理解为是10%的漂白粉溶液浸泡10分钟。

胡杨

   该进口眼底镜的说明书上的消毒使用的“Bleach”，应该是5%的次氯酸钠溶液。10%稀释成为0.5%，也就是5000mg/L.。属于高水平消毒的上限范围【2000-5000mg/L].
       关于次氯酸钠与有效氯的换算问题，涉及到化学反应与活性成分的摩尔浓度质量比，略微复杂。但对于有效氯计算差别不大，可以忽略不计，直接按次氯酸钠计算也未尝不可。当然，要具体搞明确原理，那是另外的事情，有必要可以专题深入讨论。
      参考。
参见维基百科：
    Bleach refers to a number of chemicals which remove colour, whiten or disinfect, often by oxidation.Sodium hypochlorite is the most commonly encountered bleaching agent, usually as a dilute (3-6%) solution in water. This solution of sodium hypochlorite, commonly referred to as simply "bleach", was also one of the first mass-produced bleaches.Sodium hypochlorite solution, 3–6%, (common household bleach) must be diluted to be used safely when disinfecting surfaces and when used to treat drinking water. When disinfecting most surfaces, 1 part liquid household bleach to 100 parts water is sufficient for sanitizing. Stronger or weaker solutions may be more appropriate to meet specific goals, such as killing resistant viruses or sanitizing surfaces that will not be in contact with food. See references for more information.

高山雪莲W

胡杨 发表于 2014-8-18 13:12
该进口眼底镜的说明书上的消毒使用的“Bleach”，应该是5%的次氯酸钠溶液。10%稀释成为0.5%，也就是5000 ...

谢谢胡教授的解答，学习了。