中文摘要：

采用微波消解样品预处理技术和原子荧光光谱法，测定了生物样品中砷和汞的含量。确定了微波消解样品的条件，优化了仪器的最佳工作参数。砷和汞的含量分别在-～20μg·L^-1和0～16μg·L^-1范围内线性良好。砷和汞的回收率分别为100．5％和98．6％。砷和汞的检出限分别为0．21和0．06μg·L^-1。试验表明，该法快速简便、准确灵敏，应用于生物样品中砷、汞的测定，结果满意。

英文摘要：

Microwave heating of sample digestion was applied to the AFS determination of arsenic and mercury in biological samples. The sample was digested in polytetrafluoroethylene （PTFE） vessel with HNO3 and HClO4, and heated with microwave digestion instrument using the mode of gradient elevation of pressure. The sample solution obtained was made up to 25 mL with HCl（1＋9） and used as mother solution for AFS determination of arsenic and mercury. Optimum working parameters of the AFS instrument were given in detail. Linearity range for the determination of arsenic was found to be 0 to 20 μg · L^-1 , and for mercury to be 0-16 μg · L^-1 , with their detection limits of 0. 21 μg · L^-1 and 0. 06 μg · L^-1 respectively. In the analysis of biological sample, recoveries of 100. 5% for arsenic and 98. 6% for mercury were obtained, and RSD＇s obtained were less than 4%.