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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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