[目的]探索建立微波消解法与氢化物发生-原子吸收光谱法相结合测定养殖场水中汞.[方法]采用氢化物-原子吸收光谱法进行测定,同时与国家标准消解方法测定结果进行比较.[结果]该方法的线性范围为10～ 80 μg/L,检出限(3S/N)为0.381 μg/L,线性相关系数＞0.999,回收率为87.6％～94.5％,相对标准偏差为4.5％.[结论]与国标消解法相比,该方法线性好、精密度高、准确度高、操作简便、样品消解完全、试剂用量少、空白值低、干扰少等优点,适用水中微量元素检测分析.%[Objective] The project aims at exploring to establish a microwave digestion method combined with hydride generation - cool atom absorption spectroscope to test the mercury in the water of the aquatic breeding farm. [Method] The mercury in the water of aquatic breeding farm was determined by Hydride Generation - Atomic Fluorescence Spectrometry, and then it was compared with the method of the national standard digestion. [Result]Linearity range of the method was from 10 to 80 ug/L. The detection limit (3S/ N) was 0. 381μg/L. Linear correlation coefficient was more than 0. 999. Recoveries found by the standard additions method were in the range of 87. 6% to 94. 5% , with relative standard deviation of 4. 5%. [ Conclusion ] Compared with the international GB digestion method, microwave digestion method was proved to have good linearity, high precision, high accuracy, simplicity in operation, complete digestion, less reagents requirement, low blank value and less interference, which was suitable in water testing analysis.
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