Determination of Tributyltin Compounds leached from Antifouling Paint by Gas Chromatography
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概要
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To obtain the content of tributyltin compounds leached from antifouling paint (A/F) into sea water, the determination of trace amounts of tributyltin chloride (TBTC) in sea water by gas chromatography equipped with electron capture detector (ECD-GC) have been studied.<BR>Tributyltin compounds in sea water were converted to TBTC by hydrochloric acid. TBTC was extracted into hexane and measured by gas chromatography (ECD-GC). For the condition of gas chromatography, 10% Thermon-HG (60/80 mesh) on Chromosolb W column (3m×3mm i. d. : Stainless steel) was used and the column temp and the flow rate of N<SUB>2</SUB> were Sett up at 160°C and 60m<I>l</I>/min, respectively. The present method was well suited for the routine analysis of TBTC in sea water because the procedure was simple and the detection limit was about 0.3 ng. The percentage of recovery for the TBTC in sea water was 101% and the relative standard deviation (n=5) of TBTC (1.2μg/m<I>l</I>) was 3.3%.
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