气相色谱法测定邻苯二甲酸酯类增塑剂的研究
Journal of South China Normal University(Natural Science Edition)(2010)
Abstract
采用超声萃取-气相色谱法测定食品包装保鲜袋材料中的邻苯二甲酸酯类增塑剂,对样品前处理和色谱分离条件进行了研究和优化.结果表明:选用15 m×0.25 mm×0.33μm XC-1石英毛细管柱,甲苯溶剂超声萃取效果较好.最佳超声萃取条件为:甲苯为溶剂,超声时间为30 min,超声功率为180 W.方法的平均回收率为96.05%~105.1%,RSD为0.370 0%~5.750%(n=3),检测限为0.100 0~100.0 mg/L.方法简便、快速、灵敏.
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Key words
capillary gas chromatography,plasticizers,phthalate
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