氢化物发生——ICP/AES法测定地面水中的痕量砷  

Determination of Trace Arsenic in Surface Water by HG'ICP/AES Method

作　　者：郑晓红[1] 

机构地区：[1]上海市环境监测中心,上海200030

出　　处：《上海环境科学》1994年第9期19-20,26,共3页Shanghai Environmental Sciences

摘　　要：采用氢化物发生——ICP/AES法测定地面水中痕量砷。进行了分析线,正向入射功率的选择及氢化物发生系统和气动雾化系统的性能比较等实验。砷的测定波长选用188.979nm(2级光谱),正向入射功率为850W。采用氢化物发生系统进样,其灵敏度比气动雾化系统进样高75～110倍。方法的检测限为0.4μg/L;加标回收率为92.4％～104.6％:精密度实验的变异系数为1.8％～8.0％。A HG-ICP/AES method was described for determn-ation of trace arsenic in surface water. The operating characteristics, including selection of analytical line and RF power, and performance comparison with hydride/vapour generator and pneumatic nebulization have been studied. The analytical wavelength of arsenic was 188.979nm (spectrum level 2); the RF power was 850W. When the sample introductive system was hydride/vapour generator, its sensitivity would be 75-110 times as high as that of pneumatic nebulization. The detection limit of this method was 0.4pg/l and the recovery rate was 92.4%-104.6%. The variation coefficient of the precision experiment was 1.82%-8.0%.

关 键 词：水质分析 地面水 砷 氢化物发生--ICP/AES法 

分 类 号：X832[环境科学与工程—环境工程]