氢化物发生—原子荧光法同时测定绞股蓝中的痕量铋和砷  

Determination of trace bismuth and arsenic in gynostemma pentaphyllum by hydride generation atomic fluorescence spectrometry

作　　者：曹丰璞[1] 丁呈华[1] 行文茹[1] 刘珊珊[1] 石杰[2] 

机构地区：[1]南阳师范学院化学与制药工程学院,河南南阳473061 [2]郑州大学化学系,河南郑州450052

出　　处：《南阳师范学院学报》2009年第3期53-55,共3页Journal of Nanyang Normal University

摘　　要：采用氢化物一原子荧光法测定绞股蓝中的痕量铋、砷，实验了酸介质和不同还原剂对测定的影响，考虑了金属离子的干扰．在最佳测定条件下，检出限分别为Bi：0．070μg／L、As：0．085μg／L，线性范围分别为Bi：0．1～130μg／L、As：0—180μg／L，加标回收率在90．1%-109．4％之间．结果表明本法具有快速、简便、准确等特点.A method is reported for the determination of trace bismuth and arsenic in gynostemma pentaphyllum by hydride generation atomic fluorescence spectrometry. The effect of acid medium and reducing agents on the determination of Bi and As and coexisting elements were studied. In the good conditions, the detection limit of Bi is 0. 070μg/L, and As is 0. 085 μg/L respectively. The linear range of determination of Bi is 0.1 - 130 μg/L, and As is 0- 180 μg/L. The recovery is about 90.1% -109.4%. The method is accurate, rapid and conven- ient with satisfactory results.

关 键 词：氢化物发生 原子荧光法 绞股蓝 铋 砷 

分 类 号：O657.3[理学—分析化学]