Ma H, Xu S, Zhou H, Wang S, Fang Z
Box 332, Research Center for Analytical Sciences, Northeastern University, 110006 Shenyang.
Guang Pu Xue Yu Guang Pu Fen Xi. 2000 Aug;20(4):529-32.
A sequential injection vapor generation atomic absorption spectrometric (SI-VGAAS) method for the determination of mercury and arsenic was developed, characterized by reagent merging using a double-syringe pump and a multi-position selector valve. A sample throughput of 120 h-1 was achieved with 500 microL sample with a precision of 2.2% for mercury at 8.0 micrograms.L-1 (n = 11) and 1.4% for arsenic at 6.0 micrograms.L-1 (n = 11) levels and a detection limit of 0.15 microgram.L-1 for mercury and 0.07 microgram.L-1 for arsenic. The method was applied to the analysis of geochemical standard reference material GSS-5, and good agreement with the certified values were obtained.
建立了一种顺序注射蒸气发生原子吸收光谱法（SI-VGAAS）测定汞和砷，其特点是使用双注射器泵和多位选择阀合并试剂。使用500微升样品时，进样通量达到120 h-1，汞在8.0微克·升-1水平时精密度为2.2%（n = 11），砷在6.0微克·升-1水平时精密度为1.4%（n = 11），汞的检出限为0.15微克·升-1，砷的检出限为0.07微克·升-1。该方法应用于地球化学标准参考物质GSS-5的分析，与认定值吻合良好。
