Recent Advances in On-Line Methods Based on Extraction for Speciation Analysis of Chromium in Environmental Matrices

被引：20
作者：
Trzonkowska, Laura [1 ]
Lesniewska, Barbara [1 ]
Godlewska-Zylkiewicz, Beata [1 ]
机构：
[1] Univ Bialystok, Inst Chem, K Ciolkowskiego 1K, PL-15245 Bialystok, Poland
来源：
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY | 2016年 / 46卷 / 04期
关键词：
Chromium speciation; coupled methods; flow methods; miniaturization; solid-phase extraction; ATOMIC-ABSORPTION-SPECTROMETRY; PLASMA-MASS SPECTROMETRY; DUAL MINI-COLUMNS; CLOUD POINT EXTRACTION; NATURAL-WATERS; DRINKING-WATER; PACKED-COLUMN; ION-EXCHANGE; SORPTION PRECONCENTRATION; SELECTIVE SEPARATION;
D O I：
10.1080/10408347.2015.1058698
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The biological activity of Cr(III) and Cr(VI) species, their chemical behavior, and toxic effects are dissimilar. The speciation analysis of Cr(III) and Cr(VI) in environmental matrices is then of great importance and much research has been devoted to this area. This review presents recent developments in on-line speciation analysis of chromium in such samples. Flow systems have proved to be excellent tools for automation of sample pretreatment, separation/preconcentration of chromium species, and their detection by various instrumental techniques. Analytical strategies used in chromium speciation analysis discussed in this review are divided into categories based on selective extraction/separation of chromium species on solid sorbents and liquid-liquid extraction of chromium species. The most popular strategy is that based on solid-phase extraction. Therefore, this review shows the potential of novel materials designed and used for selective binding of chromium species. The progress in miniaturization of measurement systems is also presented.
引用
收藏
页码：305 / 322
页数：18
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