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J Chromatogr A. 2010 Apr 2;1217(14):2187-90. doi: 10.1016/j.chroma.2010.01.087. Epub 2010 Feb 6.

Simultaneous determination of a pyridine-triphenylborane anti-fouling agent and its estimated degradation products using capillary zone electrophoresis.

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Kobe University Graduate School of Maritime Sciences, 5-1-1 Fukaeminami-machi, Higashinada-ku, Kobe 658-0022, Japan.


A commercial organoborane compound, pyridine-triphenylborane (PTPB), is often applied to ship hulls as an anti-fouling agent. We developed capillary zone electrophoresis (CZE) with direct UV detection for the simultaneous determination of PTPB and its estimated degradation products: diphenylborinic acid (DPB), phenylboronic acid (MPB), and phenol. The limits of detection (LODs) for PTPB, DPB, MPB, and phenol were, respectively, 25, 30, 50, and 29 microg/l at a signal-to-noise ratio of three. At concentrations of 0.5mg/l, values of the relative standard deviation (RSD, n=6, intra-day) of peak area were obtained, respectively, for PTPB, DPB, MPB, and phenol, as 4.1, 4.1, 4.7, and 3.4% for peak heights 3.6, 3.2, 1.7, and 1.4%, and for migration times 1.1, 1.1, 1.0, and 0.73%. The analytes were detected within 14 min. Simple photodegradation experiments were conducted to verify the usefulness of the proposed method for additional PTPB degradation investigations.

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