Analytical Sciences

Abstract − Analytical Sciences, 28(12), 1191 (2012).

Simultaneous Determination of Pyridine-Triphenylborane Anti-Fouling Agent and Its Degradation Products in Paint-Waste Samples Using Capillary Zone Electrophoresis with Field-Amplified Sample Injection AUTH: Netnapit KAEWCHUAY,* Keiichi FUKUSHI,* Ai TSUBOI,* Hideo OKAMURA,* Keiitsu SAITO,** and Takeshi HIROKAWA*** AFFL: *Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminami-machi, Higashinada, Kobe 658-0022, Japan
**Graduate School of Human Development and Environment, Kobe University, 3-11 Tsurukabuto, Nada, Kobe 657-8501, Japan
***Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan ABST: We proposed a capillary zone electrophoresis (CZE) procedure using field-amplified sample injection (FASI) for the simultaneous determination of pyridine-triphenylborane (PTPB) and its degradation products: diphenylborinic acid (DPB), phenylboronic acid (MPB), and phenol. The LODs for PTPB, DPB, MPB, and phenol were, respectively, 0.85, 0.88, 44, and 28 μg L−1. The RSDs (n = 4) for the analytes listed above were in respective ranges of 6.2 – 14, 5.9 – 10, and 0.49 – 0.62% for the peak area, peak height, and migration time. The compounds were extracted from paint-waste samples collected from shipyards using a siliga-gel column. The extract was dissolved with acetonitrile containing 1% (v/v) pyridine. The samples were then analyzed using CZE, revealing respective concentrations of 0.076 – 0.53, 0.015 – 0.36, 1.7 – 22, and 1.2 – 13 μg g−1. The proposed FASI-CZE method is a simple and promising procedure that is expected to be useful for the determination of PTPB and its degradation products in paint wastes.