Photo-induced chemical-vapor generation for sample introduction in atomic spectrometry

详细信息    查看全文

• 作者：Yongguang  ; Yin ; Jingfu  ; Liu  ; ;   ; ^{jfliu@rcees.ac.cn} ; Guibin  ; Jiang
• 关键词：Atomic spectrometry ; High-performance liquid chromatography ; Hydride-forming element ; Organic compound ; Photo-induced chemical-vapor generation ; Sample introduction ; Speciation ; Transition metal ; Ultraviolet irradiation ; Volatile species
• 刊名：TrAC Trends in Analytical Chemistry
• 出版年：2011
• 出版时间：November 2011
• 年：2011
• 卷：30
• 期：10
• 页码：1672-1684
• 全文大小：400 K

文摘

Chemical-vapor generation (CVG) is widely used as a sample-introduction technique for atomic spectrometry, with the advantages of efficient matrix separation, high analyte-transport efficiency, and high selectivity and sensitivity. Recently, photo-induced CVG (photo-CVG) was demonstrated to be a powerful alternative to conventional CVG. In photo-CVG, volatile species (including hydrides, elemental, carbonylated and alkylated analytes) are generated from non-volatile precursors by ultraviolet irradiation in the presence of low-molecular-weight organic compounds. Photo-CVG is simple, fast and environmentally friendly with little interference from transition metals. Its analytical applications have been demonstrated in analysis of Hg, conventional hydride-forming elements (As, Bi, Sb, Se, Te), transition metals (Ni, Co, Fe) and non-metals (I). In addition, photo-CVG was developed as a simple, effective interface between high-performance liquid chromatography (HPLC) and atomic spectrometry. This review summarizes the applications of photo-CVG for various analytes and as a novel interface between HPLC and atomic spectrometry. We also discuss current research on the possible reaction mechanism of photo-CVG.