Simultaneous determination of a pyridine-triphenylborane anti-fouling agent and its estimated degradation products using capillary zone electrophoresis.
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.
Fukushi
Keiichi
K
Kobe University Graduate School of Maritime Sciences, 5-1-1 Fukaeminami-machi, Higashinada-ku, Kobe 658-0022, Japan. fukushi@maritime.kobe-u.ac.jp
Yakushiji
Yuki
Y
Okamura
Hideo
H
Hashimoto
Youichi
Y
Saito
Keiitsu
K
D000097:Acetonitriles / Q000737:chemistry; D001880:Boranes / Q000032:analysis* / Q000737:chemistry; D001896:Boron Compounds / Q000032:analysis / Q000737:chemistry; D001897:Boronic Acids / Q000032:analysis / Q000737:chemistry; D019075:Electrophoresis, Capillary / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D010575:Pesticides / Q000032:analysis* / Q000737:chemistry; D019800:Phenol / Q000032:analysis / Q000737:chemistry; D010782:Photolysis; D011725:Pyridines / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012972:Sodium Hydroxide / Q000737:chemistry
D000097:Acetonitriles; D001880:Boranes; D001896:Boron Compounds; D001897:Boronic Acids; D010575:Pesticides; D011725:Pyridines; C044960:diphenylborinic acid; D019800:Phenol; D012972:Sodium Hydroxide; C010686:benzeneboronic acid; C032159:acetonitrile