微波溶解—氢化物发生原子荧光光谱法测定氟石中的砷和汞  

DETERMINATION OF ARSENIC AND MERCURY IN FLUORSPAR BY MICROWAVE DIGESTION HG-AFS METHOD

作　　者：曾泽[1] 蒋维旗[1] 谢琰[1] 

机构地区：[1]辽宁出入境检验检疫局,辽宁大连116001

出　　处：《检验检疫科学》2008年第6期32-34,共3页Inspection and Quarantine Science

摘　　要：研究了用微波溶解试样、氢化物发生原子荧光光谱法测定氟石中砷和汞的方法。探讨了试样的溶解条件、测定仪器条件、砷浓度过高时的预警与处理、硼氢化钾还原剂浓度对汞测定的影响及优化等。方法检出限0.076ng/mL(As),0.007ng/mL(Hg),线性范围3.6～36ng/mL(As),0.2～1.2ng/mL(Hg),回收率105.4%～110.2%(As),100.3%～103.2%(Hg)。The determination of arsenic and mercury in fluorspar by microwave digestion HG-AFS method was studied. The dissolving conditions, treatment for over-concentrated arsenic and effect for determination of mercury from reduced reagent concentration and its optimization are discussed. The detection limit of are 0.076 ng/mL for As and 0.007ng/mL for Hg, the linear range are 3.6-36ng/mL for As and 0.2-1.2ng/mL for Hg in this paper,recovery are 105.4%-110.2%for As and 100.3 -103.2%for Hg.

关 键 词：微波溶解 氟石 砷 汞 氢化物发生原子荧光光谱法 扩增正交试验法 

分 类 号：O657.31[理学—分析化学]