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饮用水中汞的测定,我国现在规定:冷原子吸收法和双硫腙分光光度法为标准检验法。但由于冷原子吸收测汞仪各生产厂家的仪器,质量不稳定,常用的氧化剂高锰酸钾中含有微量汞时,很难除去。而双硫腙分光光度法干扰物较多,条件不易掌握,手续繁琐,最低检出浓度已经达到国家卫生标准的最高允许浓度。因此,我们采用溴酸钾—溴化钾混合试剂,在酸性介质中所生成的溴来破坏有机汞化合物使其转化为无机汞,
Determination of mercury in drinking water, China now provides: cold atomic absorption spectrometry and dithizone spectrophotometry as the standard test. However, due to cold atomic absorption mercury analyzer manufacturers of various instruments, the quality is unstable, commonly used oxidant potassium permanganate contains trace mercury, it is difficult to remove. The dithizone spectrophotometer interfere with more conditions are not easy to grasp, tedious procedures, the lowest detected concentration has reached the highest national health standards allowable concentration. Therefore, we use potassium bromate - potassium bromide mixed reagents, bromine generated in acidic medium to destroy organic mercury compounds into inorganic mercury,