TY - JOUR
T1 - Total reflection X-ray fluorescence analysis with chemical microchip
AU - Tsuji, Kouichi
AU - Hanaoka, Yousuke
AU - Hibara, Akihide
AU - Tokeshi, Manabu
AU - Kitamori, Takehiko
N1 - Funding Information:
This work was financially supported by the PRESTO-JST (Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency) project.
PY - 2006/4
Y1 - 2006/4
N2 - 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.
AB - 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.
KW - Chemical microchip
KW - Microchannel
KW - TXRF
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U2 - 10.1016/j.sab.2006.01.015
DO - 10.1016/j.sab.2006.01.015
M3 - Article
AN - SCOPUS:33745195007
VL - 61
SP - 389
EP - 392
JO - Spectrochimica Acta - Part B Atomic Spectroscopy
JF - Spectrochimica Acta - Part B Atomic Spectroscopy
SN - 0584-8547
IS - 4
ER -