By a News Reporter-Staff News Editor at Science Letter -- Current study results on Minerals have been published. According to news originating from Hsinchu, Taiwan, by NewsRx correspondents, research stated, "In this study, a poly(methyl methacrylate) chip-based photocatalyst-assisted reduction device (PMMA chip-based PCARD) was developed as a reactor based on its excellent optical properties and ease of fabrication. Its transmittance of ultraviolet light at 365 nm (UV365) was found to be as high as 92% using a PMMA of 2 mm thickness."
Our news journalists obtained a quote from the research from Industrial Technology Research Institute, "To optimize the vaporization efficiency, the effect of varying the depth of the geometry trenched on the PMMA-based chip was investigated. After optimization, it required only 29s of UV365 irradiation to vaporize the selenium (Se) species of interest. The PMMA-based chip was successfully used as an interfacing device for the hyphenation of high performance liquid chromatography (HPLC) separation and inductively coupled plasma-mass spectrometry (ICP-MS) detection. Additionally, under the optimized conditions for vaporization, using 1 g L-1 titanium dioxide nanoparticles (nano-TiO2) at pH 5, we found that Se(IV) and Se(VI) were converted quantitatively into volatile Se products. In addition, the optimized vaporization efficiency of the Se species of interest for the online HPLC/PMMA chip-based PCARD/ICP-MS system enabled us to achieve detection limits for Se(IV) and Se(VI) in the nanogram-per-liter range (based on 3 sigma)."
According to the news editors, the research concluded: "A series of validation experiments indicated that our proposed methods could be applied satisfactorily to the determination of inorganic Se species in environmental water samples."
For more information on this research see: Development of chip-based photocatalyst-assisted reduction device to couple high performance liquid chromatography and inductively coupled plasma-mass spectrometry for determination of inorganic selenium species. Journal of Chromatography A, 2013;1304():101-108. Journal of Chromatography A can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Chromatography A - www.elsevier.com/wps/product/cws_home/502688)
The news correspondents report that additional information may be obtained from T.T. Shih, Ind Technol Res Inst, Center Measurement Stand, Hsinchu 30011, Taiwan. Additional authors for this research include I.H. Hsu, J.F. Wu, C.H. Lin and Y.C. Sun (see also Minerals).
Keywords for this news article include: Asia, Taiwan, Hsinchu, Minerals, Selenium, Chalcogens, Photocatalyst, Nanotechnology, Photocatalytic, Imaging Technology, Emerging Technologies, High-Performance Liquid Chromatography
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