|
|||||
|
|
Lower limits of detection in speciation analysis by coupling high-performance liquid chromatography and chemical-vapor generation |
|
| Authors: | Yasin Arslan Emrah YildirimMehrdad Gholami Sezgin Bakirdere |
| Institution: | a Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey b Department of Chemistry, Ataturk University, Erzurum, Turkey c Department of Chemistry, Islamic Azad University, Marvdasht Branch, Iran d Department of Chemistry, Zonguldak Karaelmas University, Zonguldak, Turkey |
| Abstract: | Speciation studies are much more important than total element determination because toxicity of many elements depends on their chemical forms. Nobody can claim that a foodstuff is very dangerous to eat by determining total arsenic due to the possibility that the arsenic could be present in non-toxic forms. Hence, speciation studies are crucial in any matrix relevant to human beings.Trace-element speciation requires sufficiently sensitive procedures to monitor each species at trace levels. One way to increase the sensitivity for elements forming volatile species is coupling high-performance liquid chromatography (HPLC) with chemical-vapor generation (CVG). This review aims to highlight not only development of HPLC-CVG techniques for ultratrace-elemental speciation in a variety of matrices but also their application. In addition, we discuss the advantages and the disadvantages of these techniques. |
| Keywords: | Arsenic Atomic absorption spectrometry Atomic fluorescence spectroscopy Chemical-vapor generation Limit of detection High-performance liquid chromatography Inductively coupled plasma mass spectrometry On-line oxidation/reduction Speciation Trace element |
| 本文献已被 ScienceDirect 等数据库收录！ | |