151. Nanomaterials for photochemical vapor generation-analytical atomic spectrometry.
- Author
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Zou, Zhirong, Hu, Jing, Xu, Fujian, Hou, Xiandeng, and Jiang, Xiaoming
- Subjects
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ANALYTICAL chemistry , *ATOMIC spectroscopy , *NANOSTRUCTURED materials , *GASES , *SPECTROMETRY , *ANALYTICAL chemistry research , *SAMPLING (Process) - Abstract
Chemical vapor generation (CVG) is widely used in analytical atomic spectrometry, with advantages of high efficiency of sample introduction (vapor generation and transportation) and matrix separation. Photochemical vapor generation (Photo-CVG) is a new subset of CVG and it has been demonstrated a powerful alternative to conventional CVG techniques due to its inherent advantages. For a long time, most research works have been devoted to improving vapor generation efficiency and expanding the vaporable element scope of Photo-CVG. Nowadays, with the help of nanomaterials and enhancement reagents, Photo-CVG covers a wide range of detectable elements and the vapor generation efficiency of some elements has been improved significantly. In this review, we summarizes the developments and applications of nanomaterials/enhancement reagents assisted Photo-CVG for analytical atomic spectrometry, including TiO 2 and TiO 2 -based composites, MOFs and some metal ions utilized as photocatalysts, photo-oxidation/reduction and enhancement reagents; as well as nanomaterials for preconcentration/separation in Photo-CVG systems. • Chemical vapor generation (CVG) is widely used in analytical atomic spectrometry. • Photo-CVG is a new sampling technique with advantages of high efficiency and matrix separation. • With nanomaterials, Photo-CVG covers a wide range of detectable elements with improved efficiency. • Nanomaterials and metal ions-assisted Photo-CVG, photo-oxidation/reduction, and preconcentration/separation are summarized. • CVG is also promising in other research areas of analytical chemistry. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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