甲醛法测定环境空气中二氧化硫影响因素的探讨

Study on the Factors Affecting the Sulfur Dioxide in the Environment by Formaldehyde

甲醛吸收—副玫瑰苯胺分光光度法是测定环境空气中二氧化硫污染物的方法之一,实验条件要求严格,文章对二氧化硫标准中间液的存放时间、PRA溶液的添加顺序、甲醛缓冲吸收液的存放时间进行了一些探讨并提出了见解,为甲醛吸收—副玫瑰苯胺分光光度法测定二氧化硫提供了一定的技术参考。

Formaldehyde absorbing pararosaniline points spectrophotometric method is one of the assay methods of sulfur dioxide pollutants in ambient air, the experimental conditions of strict requirements, this paper of sulfur dioxide standard intermediate liquid stored time, PRA solution addition sequence, formaldehyde buffer absorption liquid storage time in the study and the insights for formaldehyde absorption-pararosaniline points spectrophotometric determination of sulfur dioxide can provide some technical reference.