Abstract
Liquid chromatography with amperometric detection (LC-AD) is developed and applied to simultaneously determine five aromatic amines. In the LC-AD, a new carbon nanotubes/poly(3-methylthiophene) modified dual-electrode is fabricated and then used as the working electrode. It is found that this chemically modified electrode (CME) exhibits efficiently electrocatalytic oxidation for aromatic amines with relatively high sensitivity, stability and long-life. Thus, lower detection in LC-AD can be achieved, which are 4.0 × 10−8 mol L−1 for aniline, 1.6 ×10−7 mol L−1 for 4-nitroaniline, 1.0 × 10−7 mol L−1 for 4-chloroaniline, 1.5 × 10−7 mol L−1 for 1-naphthylamine, 1.7 × 10−7 mol L−1 for 2-bromoaniline. The recoveries of the five analytes are also determined, which range between 0.95 and 1.05 for drinking water, 0.86 and 1.10 for the LiWa River water.
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Cao, XN., Li, JH., Xu, HH. et al. Simultaneous Determination of Aromatic Amines by Liquid Chromatography Coupled with Carbon Nanotubes/Poly (3-methylthiophene) Modified Dual-Electrode. Chromatographia 59, 167–172 (2004). https://doi.org/10.1365/s10337-003-0164-x
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DOI: https://doi.org/10.1365/s10337-003-0164-x