Investigations into chromium speciation by electrospray mass spectrometry : Speciation
Investigations into chromium speciation by electrospray mass spectrometry : Speciation
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通过电喷雾质谱法研究铬形态：形态
DOI：
10.1039/ja9961101203
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发表时间：
1996
影响因子：
3.4
通讯作者：
G. Horlick
中科院分区：
文献类型：
--
作者：
I. Stewart;G. Horlick
铬是一种毒性依赖于氧化态的元素。铬（VI）被认为对人体有毒，而铬（III）被认为是必需的营养素。因此，能够区分溶液中的两种氧化态是很重要的。本研究表明，电喷雾质谱法（ESMS）有可能提供有关溶液样品中铬种类的有用信息。两种氧化态的不同溶液形式都可以直接观察到并给出。此外，还讨论了两种氧化态的其他更不常见的物质，如聚合物Cr III和聚阴离子三氯酸盐。最后，探讨了ESMS监测两种铬氧化态溶液化学的其他方面的能力。
Chromium is an element whose toxicity is oxidation state dependent. Chromium(VI) is considered toxic to humans whereas Cr III is considered to be an essential nutrient. It therefore becomes important to be able to distinguish between the two oxidation states in solution. In this study it is shown that electrospray mass spectrometry (ESMS) has the potential to provide useful information on chromium species in solution samples. The various solution forms of both oxidation states may be observed directly and are presented. In addition, other more uncommon species of both oxidation states such as polymeric Cr III and the polyanion trichromate are discussed. Finally, the ability of ESMS to monitor other aspects of the solution chemistry of both chromium oxidation states is explored.