流动注射-氢化物发生-原子吸收光谱法测定雪中的微量铅  

DETERMINATION OF MICRO Pb IN SNOW BY FLOW INJECTION-HYDRIDE GENERATION-ATOMIC ABSORPTION SPECTROMETRY

作　　者：王尚芝[1] 王海青[1] 宋雅茹[2] 宋少飞[1] 周福林[1] 

机构地区：[1]雁北师范学院化学系,大同037000 [2]北京师范大学化学系,北京100875

出　　处：《化学分析计量》2003年第4期13-15,共3页Chemical Analysis And Meterage

基　　金：雁北师范学院科学研究基金(200304102)

摘　　要：建立了测定雪中微量铅的流动注射-氢化物发生-原子吸收光谱法。在优化条件下,测定铅的线性范围为0～52.0ng/mL,线性回归方程为A=0.018c+0.016,相关系数r=0.9995,检出限为0.2ng/mL。用于雪中微量铅的测定,加标回收率为94.2％～107.3％,相对标准偏差为1.47％～3.22％。该方法的测定结果与标准加入法基本一致。A method for the determination of micro Pb in snow by flow injection-hydride generation-atomic absorption spectrometry has been developed. The linear range is 0-52.0 ng/mL, the linear regression equation is A =0. 018c +0. 016, the correlation coefficient is 0. 9995, and the detection limit is 0. 2 ng/mL. The method was applied to determine micro Pb in snow, the recovery is 94. 2%-107. 3% and RSD is 1.47%-3. 22% . The test results obtained by this metbod are basically consistent with those of standard addition method.

关 键 词：流动注射 氢化物发生-原子吸收光谱法 测定 雪 微量铅 大气污染 

分 类 号：X51[环境科学与工程—环境工程] X132