微型ICP激发源对液体样品中砷与汞的定性分析  

Micro-ICP excitation source used for the exploration of the qualitative analysis of arsenic and mercury in liquid samples

作　　者：王永清[1] 韩芳芳[1] 王硕南 刘庆学[2] 杨帅[1] 徐崇颖[2] 

机构地区：[1]河北大学电子信息工程学院,保定071002 [2]国土资源部保定矿产资源监督检测中心,保定071002

出　　处：《分析试验室》2016年第10期1177-1180,共4页Chinese Journal of Analysis Laboratory

基　　金：河北省科技厅科技攻关计划项目(07217124);保定市科学技术研究与发展计划项目(06G10)资助

摘　　要：将自制微型ICP激发源与氢化物发生器组成实验平台,对溶液中的砷、汞进行了定性分析探索,解决了自制的微型ICP激发源无法测试液体样品的问题。采用硼氢化钠-盐酸体系在氢化物发生器中运用气动型断续流动发生法制取含砷、汞的氢化物气体样品。利用高纯氩作为载气将收集到的样品气体送入微型ICP激发源放电室,在RF功率为12 W,气压为70 Pa的工作条件下起燃后检测到光谱信号,利用Sepcline软件辨识出2条砷(211.30,234.98nm)元素谱线、2条汞(296.73,313.15 nm)元素谱线。实验分析得出了砷、汞检测所用盐酸和硼氢化钠的最佳配比。采用自制微型ICP激发源检测到砷、汞谱线,该激发源可用于液体砷汞样品的定性检测。The experimental platform was composed of the micro ICP excitation source and hydride generator,and the qualitative analysis of the arsenic and mercury in the solution was carried out to solve the problem that the micro ICP excitation source can not test the liquid sample. The sodium hydroxide hydrochloric acid system in the hydride generator was used to complete the preparation of hydride gas in the use of pneumatic intermittent flow generation method. Using high purity argon as carrier gas,the collected sample gas was fed into excited discharge chamber of the micro ICP excitation source. In working conditions of RF Power 12 W,pressure 70 Pa,the fiber spectrometer was used to detect the hydride plasma spectral signal. By using the software,spectral lines of elements,including 2 arsenic（ 211. 30 nm,234. 98 nm） lines and 2 mercury（ 296. 73 nm,313. 15 nm）lines were identified. The best ratio of hydrochloric acid and sodium hydroxide in the detection of arsenic and mercury was obtained,and the analysis was carried out. For the first time,arsenic and mercury spectrum lines were detected by micro ICP excitation source. It is proved that the excitation source can be used for the qualitative detection of arsenic and mercury in liquid.

关 键 词：微型 ICP激发源 液体 氢化物发生器 砷 汞 

分 类 号：Q657.3[生物学—生物物理学]