In situ derivatization of metals and organometallics using borate reagents in gas chromatographic speciation studies.
In situ derivatization of metals and organometallics using borate reagents in gas chromatographic speciation studies.
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DOI：
10.1016/j.chroma.2013.04.060
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发表时间：
2013-06
期刊：
影响因子：
--
通讯作者：
G. Zachariadis
中科院分区：
文献类型：
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作者：
G. Zachariadis
需要开发灵敏和选择性的分析方法来分析痕量金属和类金属，包括它们的烷基、苯基或其他有机金属物种。气相色谱法是有效分离上述化合物的最合适的技术之一，但它要求分析物是挥发性或半挥发性的。目前非常流行的衍生化方法是利用硼酸盐试剂原位衍生汞、铅、锡、硒、砷等元素。四氢硼酸盐适用于氢化物生成，烷基硼酸盐适用于上述元素的无机离子以及几种部分烷基化的无机离子的烷基化。这种几乎直接的反应可以在水溶液中进行，并产生高挥发性的完全烷基化产物，适用于气相色谱分离和各种检测器测量。该领域发表的论文数量不断增加，包括许多应用于各种类型的基质，如生物，环境，工业，食品，聚合物等。为此，本文回顾了近二十年来的许多文章，重点介绍了硼酸盐试剂的使用和选定元素的相对微反应。
Development of sensitive and selective analytical methods is required for trace metal and metalloids speciation analysis, including their alkyl-, phenyl- or other organometallic species. Gas chromatography is one of the most suitable techniques for effective separation of the above compounds however it requires that the analytes are volatile or semi-volatile. Today very popular derivatization methods make use of borate reagents for in situ derivatization of elements like Hg, Pb, Sn, Se, As, etc. Tetrahydroborates are suitable for hydride generation and alkylborates for alkylation of the inorganic ions of the above elements, as well as of several partially alkylated ones. This almost immediate reaction can be done in aqueous solutions and produces fully alkylated products of higher volatility suitable for separation by gas chromatography and measured by various detectors. The number of papers published in this field is constantly high, including many applications to various types of matrices, like biological, environmental, industrial, food, polymers, etc. For this reason, many articles of the last two decades are reviewed in this paper and emphasis is given to the use of borate reagents and the relative microreactions for selected elements.