Identification and chromatographic separation of antimony species with α-hydroxy acids

被引：48

作者：

Guy, A ^{[1
]}

Jones, P ^{[1
]}

Hill, SJ ^{[1
]}

机构：

[1] Univ Plymouth, Dept Environm Sci, Plymouth PL4 8AA, Devon, England

来源：

ANALYST | 1998年 / 123卷 / 07期

关键词：

speciation; antimony; alpha-hydroxy acids; NMR spectroscopy; electrospray ionisation mass spectrometry; high-performance liquid chromatography inductively coupled plasma atomic emission spectrometry;

D O I：

10.1039/a708574e

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The ability of alpha-hydroxy acids to complex with Sb-III and Sb-v has been established in hydride generation atomic absorption spectrometric determinations of Sb-III and solvent extraction techniques. The nature of this complexation with Sb-v has yet to be rigorously investigated. NMR, electrospray ionisation mass spectrometry and HPLC-ICP-AES methods have been developed to confirm the existence of these complexes in aqueous media and to determine their molecular masses based on a mole-ratio method. It is shown that anion-exchange chromatography can be used to separate mixtures of Sb(OH)(x)(L)(n) complexes, [L = citric, DL-malic, lactic or (+)-mandelic acid], where n = 6 - x.

引用

页码：1513 / 1518

页数：6

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