Speciation of organotins in poly (vinyl chloride) products
作者:
D. S. Forsyth,
R. Dabeka,
W. F. Sun,
K. Dalglish,
期刊:
Food Additives & Contaminants
(Taylor Available online 1993)
卷期:
Volume 10,
issue 5
页码: 531-540
ISSN:0265-203X
年代: 1993
DOI:10.1080/02652039309374176
出版商: Taylor & Francis Group
关键词: poly(vinyl chloride);organotins;gas chromatography‐atomic absorption spectrometry
数据来源: Taylor
摘要:
Extraction studies on butyl‐ and octyltins were conducted with three poly(vinyl chloride) (PVC) product types: clear food container, rigid pipe and flexible membrane. Three solvents, tetrahydrofuran, xylene and methylene chloride were evaluated for extraction efficiency. Methylene chloride extracted more than 97% of the total extractable organotin in two extractions and resulted in the highest recoveries of analytes from all three PVC products. Method detection limits ranged from 0.3 to 0.9μgalkyltin/g PVC. The mean precision of the method is 6.8% relative standard deviation. Food industry PVC product samples contained between <0.8 and 8751μg/g octyltins and <0.3 and 4.7 μg/g butyltins. Butyltins (<0.9–5985 μg/g) were detected in potable water pipe samples. Pipe used in industrial applications contained both butyl‐ (13–1501μg/g) and octyltins (701–3033 μg/g).
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