Total reflection X-ray fluorescence analysis with chemical microchip

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• 作者：Kouichi Tsuji ; Yousuke Hanaoka ; Akihide Hibara ; Manabu Tokeshi and Takehiko Kitamori
• 关键词：TXRF ; Chemical microchip ; Microchannel
• 刊名：Spectrochimica Acta Part B: Atomic Spectroscopy
• 出版年：2006
• 出版时间：April 2006
• 年：2006
• 卷：61
• 期：4
• 页码：389-392
• 全文大小：224 K

文摘

A chemical microchip, which has a flat region on the surface, was recently designed for total reflection X-ray fluorescence (TXRF) analysis. A sample solution was introduced from an inlet by a microsyringe and flowed into a microchannel. Finally it overflowed from the well-type microchannel on the flat region. The sample solution on this region was dried, and then measured by TXRF. The TXRF spectra could be measured with a low background level. This preliminary result indicated that the edge of the well-type channel would not cause a serious problem for TXRF analysis. In addition, a good linear relationship was obtained for Zn Kα in Zn standard solution. This suggests that quantitative analysis by TXRF is feasible in combination with a chemical microchip.