Abstract − Analytical Sciences, 34(12), 1351 (2018).
Design of a Novel Apparatus to Enrich Analytes via a Diffuse-Evaporation Process for HPLC-FTIR Analysis
Shengnan LIU,*1,*2 Xiaohua ZHANG,*2 Ran GUO,*2 Yongju WEI,*1 Isao NODA,*2,*3 Yukihiro OZAKI,*2,*4 Yizhuang XU,*2 and Jinguang WU*2
*1 College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, P. R. China
*2 College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
*3 Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
*4 Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
*2 College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
*3 Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
*4 Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
HPLC-FTIR analysis using a novel apparatus with CuO powder as an interface is reported. This apparatus initially serves as a reservoir for the dilute eluted solution of HPLC, and then acts as an enrichment device by combining diffusion and evaporation processes. It can be used not only to effectively remove the mobile phase of the eluted solution, but also to enrich the analyte within a tiny spatially resolved separated sample spot whose size is suitable for obtaining spectra using an FTIR microscope. An experimental demonstration using benzamide and sodium dodecyl benzene sulfonate shows that this apparatus is readily applicable in the analysis of real-world mixture samples.
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