对人畜有害的痕量二氧化硫的测定,已有相当多的文献讨论了各种物理与化学的测定方法。其中分光光度法测定二氧化硫简单、灵敏,是一种很有价值的方法。已知二氧化硫可被很多有机物质吸收,二氧化硫可与吗啉或其衍生物形成加合物。本文应用了这一性质,以吗啉做为二氧化硫的捕集液。将亚硫酸盐或亚硫酸做为二氧化硫加入吗啉溶液内,所得加合物用酸性盐酸付玫瑰苯胺及甲醛作用,产生最大吸收为 Determination of trace amounts of sulfur dioxide harmful to humans and animals, a considerable amount of literature has discussed a variety of physical and chemical determination. One of the simple and sensitive spectrophotometric determination of sulfur dioxide is a valuable method. It is known that sulfur dioxide can be absorbed by many organic substances and that sulfur dioxide can form adducts with morpholine or its derivatives. This application of this property, morpholine as a capture of sulfur dioxide. The sulfite or sulfurous acid as sulfur dioxide added to the morpholine solution, the resulting adduct with acidic hydrochloric acid pay rose aniline and formaldehyde, resulting in the maximum absorption of