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城市和工业地区大气中的二氧化硫是重要的污染物,是环境监测的主要监测项目之一。早在1930年,Zefp 就用碘量比色法测定过大气中的二氧化硫。1956年 West 用四氯化钾溶液吸收二氧化硫,形成较稳定的络合物[Hg(SO_3)_2]~=,用盐酸副玫瑰苯胺比色法测定,进一步解决了低浓度二氧化硫的采样和测定问
Sulfur dioxide in the atmosphere in urban and industrial areas is an important pollutant and one of the major environmental monitoring monitoring projects. As early as 1930, Zefp measured sulfur dioxide in the atmosphere using iodometric colorimetry. 1956 West with potassium chloride solution to absorb sulfur dioxide to form a more stable complex [Hg (SO_3) _2] ~ =, with pararosaniline hydrochloride colorimetric determination to further address the sampling and determination of low concentrations of sulfur dioxide