高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (6): 1000.

• 论文 • 上一篇    下一篇

用离子交换/ICP-AES联用技术研究溶液中配合铝的形态及分布

陈捷, 吴一微, 胡斌, 江祖成   

  1. 武汉大学化学系, 武汉 430072
  • 收稿日期:2002-06-19 出版日期:2003-06-24 发布日期:2003-06-24
  • 通讯作者: 江祖成(1938年出生),男,教授,博士生导师,主要从事等离子体光谱分析.E-mail:zcjiang@whu.edu.cn E-mail:zcjiang@whu.edu.cn
  • 基金资助:

    武汉市晨光计划资助

Studies on Distribution of Al Species Using Ion-exchange Microcolumn Combined with ICP-AES

CHEN Jie, WU Yi-Wei, HU Bin, JIANG Zu-Cheng   

  1. Department of Chemistry, Wuhan University, Wuhan 430072, China
  • Received:2002-06-19 Online:2003-06-24 Published:2003-06-24

PDF (PC)

被引次数

11

摘要： 以阳离子交换微柱分离与ICP-AES检测联用技术为分离/检测手段,系统地研究了不同配体配合物体系中铝的形态及其分布.当pH=6.0时,溶液中非稳定态单核铝被微柱所保留,而稳定态配合铝直接从微柱中流出.所选择的研究体系分别为:Al-氟化物(Al-Fluoride),Al-磷酸盐(Al-Phosphate),Al-柠檬酸盐(Al-Citrate),Al-草酸盐(Al-Oxalate)及Al-EDTA.在确定的pH值条件下,研究了不同的摩尔比[n(Al)/n(配合剂)]对铝的形态分布的影响,得到了一些对实际应用有指导意义的规律性结论.

关键词: 低分子量配合铝, 形态分析, 阳离子交换微柱, ICP-AES

Abstract: The distributions of Al species in different Al-ligands solutions were studied systematically bYUsing a microcolumn packed with weakly acidic cation-exchange resins coupled with ICP-AES. At pH=6.0, all labile monomeric Al species were retained on the microcolumn while non-labile monomeric Al species were directly passed through the column. The Al-ligands systems studied include Al-fluoride, Al-phosphate, Al-citrate, Al-oxalate and Al-EDTA. The effects of different Al-to-ligand molar ratios on the speciation were studied at a certain pH value, and some practised rules were obtained.

Key words: LMW-Al, Speciation, Cation-exchange microcolumn, ICP-AES

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