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目前国内汞的分析,大都用二硫踪比色法进行。但在日常分析工作中,特别在水质分析、食品分析方面,常感到分析方法灵敏度不能满足要求,操作繁复费时,因此需要加以改进。本方法根据原子吸收光谱分析法的原理,利用金属汞在常温下易于蒸发且又不易立即与氧作用的特性,省去一般原子吸收光谱分析中的火焰装置,简便有效地进行超微量汞的冷原子吸收光谱分析,在分析水质、土壤、食品、尿、头发中的含汞量时,可先将试样进行消化,以便使有机汞转变成无机汞盐(Hg~(+2))。然后用亚锡
At present, the analysis of domestic mercury, mostly by the two sulfur colorimetric method. However, in the daily analysis work, especially in water quality analysis and food analysis, it is often felt that the sensitivity of the analytical method can not meet the requirements and the operation is complicated and time-consuming, and therefore needs to be improved. According to the principle of atomic absorption spectrometry, the method utilizes the property that metal mercury is easy to evaporate at room temperature and does not readily react with oxygen, and the flame apparatus in the general atomic absorption spectrometry is omitted, and the ultra trace mercury cold Atomic Absorption Spectroscopy (FAAS) analysis can be used to digest organic mercury into inorganic mercury salts (Hg ~ (+2)) when analyzing the mercury content of water, soil, food, urine and hair. Then with stannous