塑料包装材料中内分泌干扰素邻苯二甲酸酯类物质的测定

利用固相萃取-气相色谱对塑料包装材料中的6种内分泌干扰素邻苯二甲酸二甲酯(DMP)、邻苯二甲酸二乙酯(DEP)、邻苯二甲酸二丁酯(DBP)、邻苯二甲酸二丁基苄基酯(BBP)、邻苯二甲酸二(2-乙基己基)酯(DEHP)和邻苯二甲酸二正辛酯(DNOP)进行了研究.采用无水乙醇超声辅助提取样品,低温处理去除杂质,结合ENVI-18固相萃取技术净化提取液,以气相色谱-氢火焰离子化检测器测定其含量.各待测组分的最小检出量均小于0.04 mg/L,回收率为92.8%~116.7%,相对标准偏差小于8.21%.

Determination of Endocrine Disruptors-phthalate Esters in Plastic Packaging Materials

A detection method is developed for the determination of six endocrine disruptors-phthalate esters in plastic packaging materials including Di-methylphthalate(DMP),Di-ethylphthalate(DEP),Dibutylphthalate(DBP),Butylbenzylphthalate(BBP),Di(2-ethylhexyl)p-hthalate(DEHP) and Di-n-octylphthalate(DNOP).These phthalate esters are analyzed by gas chromatography combined with solid phase extraction(SPE).The samples are prepared by ultrasonic-assisted extraction with ethanol.Then the extract is purified by removing impurity with low temperature treatment and SPE with ENVI-18 column.Finally the samples are analyzed by using gas chromatography with flame ionization detector(GC-FID).The limits of detection of the 6 pollutants were all below 0.04 mg/L.The average recoveries were between 92.8% and 116.7% with relative standard deviation(RSD) less than 8.21%.