氯仿和乙醚是兩種常用的全身麻醉劑,儘管它們本身還存在着許多的缺點,但是由於製法容易使用方便,一百多年来仍被廣泛地採用着。醫藥上用的氯仿和乙醚都是經過特製的純品,裹面很少含有其他的雜質,但是如果保存不當或者保存時间长久后,氯仿和乙醚就會變質。它們能吸收空氣中的氧氣,漸渐自己氧化成一些具有毒性的物質,陽光可以促進這種氧化作用,氧化後的氯仿和乙醚就不 Chloroform and ether are two commonly used general anesthetic agents. Although they have many drawbacks, they are widely used for over one hundred years due to their ease of use. Chloroform and ether used in medicine are specially made pure products, and the wrapper seldom contains other impurities. However, if it is not properly preserved or stored for a long time, chloroform and ether will be deteriorated. They can absorb oxygen in the air and gradually oxidize themselves into toxic substances. Sunlight can promote this oxidation. After oxidation, chloroform and ether are not