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本文研究了各种因素(酸碱度、催化剂的用量、载气流速、还原剂的用量、反应温度、反应时间、反应物的体积)对Magos法测定无机汞和有机汞的影响.作者改进了Magos法后取得了良好的结果.测定无机汞和有机汞(以甲基汞表示)的线性范围分别是0～0.1μgHg~(2+)和0～0.4μg甲基汞(以汞计).同时也研究了影响巯基棉富集、洗脱的各种因素,制定了富集、洗脱条件本法测定无机汞的最低浓度为1μg/200ml.测定无机汞10ng/200ml和有机汞30ng/200ml时的标准偏差为±1.56,此方法已用于环境水样中有机汞和无机汞的分析.
In this paper, the effects of various factors on the determination of inorganic mercury and organic mercury by Magos method were investigated by various factors (pH, amount of catalyst, carrier gas flow rate, amount of reducing agent, reaction temperature, reaction time and volume of reactants) And good results were obtained.The linear range of determination of inorganic mercury and organic mercury (as methylmercury) was 0 ~ 0.1μgHg ~ (2+) and 0 ~ 0.4μg methylmercury (calculated as mercury), respectively The factors influencing the enrichment and elution of sulfhydryl cotton were studied and the conditions for enrichment and elution were established.The minimum concentration of inorganic mercury for the determination of inorganic mercury in this method was 1μg / 200ml.The determination of inorganic mercury 10ng / 200ml and organic mercury 30ng / 200ml The standard deviation is ± 1.56. This method has been used for the analysis of organic and inorganic mercury in environmental water samples.