摘要
采用以溶胶 凝胶技术涂渍的富勒烯固相微萃取纤维头,利用顶空固相微萃取/气相色谱法对聚氯乙烯(PVC)塑料玩具在模拟人体唾液浸泡液中邻苯二甲酸二酯类化合物的溶出量进行了测定,并对模拟人体唾液中5种邻苯二甲酸二酯类增塑剂的固相微萃取时间、萃取温度、盐效应、热解吸时间、振荡速度等条件进行优化,研究了PVC塑料玩具在模拟人体唾液中的浸泡条件对增塑剂溶出量的影响。该方法目标化合物的检出限为0 079～1 7μg/L,回收率为88 4～107 7%(RSD<8%)。应用于实际玩具样品的分析,结果令人满意。对以溶胶 凝胶技术制备的富勒烯固相微萃取纤维头与商品聚二甲基硅氧烷(PDMS)固相微萃取纤维头的性能进行了对比。
A fiber coated with fullerene by solgel technique was used to determine the stripped phthalic diesters in polyvinyl chloride (PVC) toys dipped in simulated saliva by solidphase microextractiongas chromatography. Phthalic diesters were added as plasticizer in PVC materials. The operating conditions such as extraction time, extraction temperature, salt effect, thermal desorption time, oscillation rate and chromatographic conditions were studied. The infusion conditions were also discussed. The extraction capabilities of the fiber prepared and commercial polydimethylsiloxane (PDMS) fibers were compared. The detection limits of the method were 0079 to 136 μg/L. The recoveries of phthalic diesters were 884% to 1077%, and the relative standard deviations (RSDs) were less than 8%. This method has been applied to real samples and the results were satisfactory.
出处
《色谱》
CAS
CSCD
北大核心
2003年第6期617-620,共4页
Chinese Journal of Chromatography
基金
国家出入境检验检疫局科研项目(K032 1999).
