高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (1): 27.

• 论文 • 上一篇    下一篇

毛细管区带电泳用于分离分析砷化合物的研究

田肖丹, 杨芃原, 何星存, 王小如   

  1. 国家教委材料与生命过程分析科学开放研究实验室, 厦门大学化学系, 厦门, 361005
  • 收稿日期:1996-12-20 出版日期:1998-01-24 发布日期:1998-01-24
  • 通讯作者: 杨芃原
  • 作者简介:田肖丹,女,26岁,博士研究生.
  • 基金资助:

    国家自然科学基金资助课题.

Studies on Speciation of Arsenious Compounds by Capillary Zone Electrophoresis

TIAN Xiao-Dan, YANG Peng-Yuan, HE Xing-Cun, WANG Xiao-Ru   

  1. The Research Laboratory of SEDC of Analytical Science for Material and Life Chemistry, Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1996-12-20 Online:1998-01-24 Published:1998-01-24

摘要: 采用毛细管区带电泳,以磷酸盐为缓冲溶液分离了5种砷的化合物:As(Ⅲ)、DMA、ANA、MMA和As(V).用紫外吸收法在191nm波长下,对实验条件进行了优化;使用扩展光程毛细管研究了实验方法的重现性;测定了各种砷化合物的峰面积与浓度的关系,在最大进样量时测定了检出限,并将该方法用于合成样品的分析.

关键词: 毛细管区带电泳, 砷, 形态分析

Abstract: Using phosphate as buffer solution, five arsenic species: arsenite (As (Ⅲ)),monomethylarsonic acid (MMA), arsanilic acid (ANA), sodium dimethylarsinate (DMA) and arsenate (As (Ⅴ) ) have been separated by capillary zone electrophoresis. Experiment conditions were optimized when the on-line UV detection was operated at 191 nm. The reproducibility of this method has been studied using extended light length capillary. Relation between signal peak area and sample concentration has been measured, and using the largest injection volume, the detection limit has been determined. Some kind of spiked sample has also been detected.

Key words: Capillary zone electrophoresis, Arsenic, Speciation

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