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  • Title: Monitoring of antifouling booster biocides in water and sediment from the port of Osaka, Japan.
    Author: Harino H, Mori Y, Yamaguchi Y, Shibata K, Senda T.
    Journal: Arch Environ Contam Toxicol; 2005 Apr; 48(3):303-10. PubMed ID: 15750770.
    Abstract:
    Concentrations of booster antifouling compounds in the port of Osaka, Japan were assessed. Concentrations of Sea-Nine 211 (4,5-dichloro-2-n-octyl-3-isothiazolone), thiabendazole (2-(4-thiazolyl)-benzimidazole), IPBC (3-iodo-2-propynyl butylcarbamate), Diuron (3,4-dichlorophenyl-N, N-dimethylurea), Irgarol 1051 (2-methylthio-4-t-butylamino-6-cyclopropylamino-s-triazine), and M1 (2-methylthio-4-t-butylamino-6-amino-s-triazine) in port water samples were in the range of <0.003-0.004 microg L(-1), <0.0008-0.020 microg L(-1), <0.0007-1.54 microg L(-1), <0.0008-0.267 microg L(-1), and <0.0019-0.167 microg L(-1), respectively. IPBC was not detected in the water samples, but the concentration of Diuron was higher than any previously reported. The concentrations of Sea-Nine 211, thiabendazole, Diuron, Irgarol 1051, and M1 in sediment samples were in the range of <0.04-2.4 microg kg(-1) dry, <0.08-1.2 microg kg(-1) dry, <0.64-1350 microg kg(-1) dry, <0.08-8.2 microg kg(-1) dry, and <0.18-2.9 microg kg(-1) dry, respectively. IPBC was again not detected. The levels of Sea-Nine 211, Diuron, and Irgarol 1051 in water and sediment samples were high in a poorly flushed mooring area for small and medium-hull vessels. Levels of Diuron and Irgarol 1051 were highest in summer. The concentration of Sea-Nine 211 in water increased between August and October 2002. Except for M1, increases in the levels of booster biocides in sediment were observed during the study period. The sediment-water partition (Kd) was calculated by dividing the concentrations in sediment by the concentrations in water. The Kd values for Sea-Nine 211, thiabendazole, Diuron, Irgarol 1051, and M1 were 690, 180, 2700, 300, and 870. The Kd value for these alternative compounds was lower than for TBT.
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