Determination of palladium in acetaldehyde catalyst solution can avoid the use of the toxic reagent, so it can improve working environment, and shorten analysis time.
采用原子吸收法分析乙醛催化剂溶液中的钯含量，使分析工作者避免接触有毒试剂，改善了工作环境，又缩短了分析时间。
The method is improved for measuring formaldehyde in air by the method of pararosaniline hydrochloride using toxic mercury reagent.
盐酸副玫瑰苯胺法测定空气中甲醛，使用了有毒的汞试剂，为此对该法进行了改进。
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