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Vapour generation at a UV/TiO2 photocatalysis reaction device for determination and speciation of mercury by AFS and HPLC-AFS

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Vapour generation at a UVTiO2 photocatalysis reaction device for determination and speciation of mercury by AFS and HPLC-AFS.pdf (536.2Kb)
发布日期
2006-12
作者
Yin, Yanmin
Liang, Jing
Yang, Limin
Wang, Qiuquan
王秋泉
所在专题
  • 化学化工-已发表论文 [14469]
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摘要
In this study we report a method for direct vapor generation of mercury species on nano TiO2 under UV irradiation in the presence of a formic acid and sodium formate mixture as a hole scavenger. A novelly designed UV/TiO2 photocatalysis reaction device (UV/TiO2 PCRD) was used as an effective sample introduction unit and an interface for mercury species determination by atomic fluorescence spectrometry (AFS) and speciation by HPLC-AFS for the first time. The detection limits of 10, 20, 30 and 70 pg mL(-1) of mercury chloride, methylmercury chloride, ethylmercury chloride and phenylmercury chloride, respectively, were achieved by AFS using flow injection mode. Compared with the traditional KBH4/NaOH-HCl system, UV/TiO2 PCRD is a superior alternative for online vapor generation of Hg species.
出处
J. Anal. At. Spectrom., 2007, 22(3):330-334
本条目访问地址(URI)
http://dx.doi.org/doi: 10.1039/B614555H
https://dspace.xmu.edu.cn/handle/2288/9592

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