同位素稀释高分辨气相色谱-高分辨质谱法测定植物油中的氯代二苯并二噁英(PCDDs)、多氯代二苯并呋喃(PCDFs)  

DETERMINATION OF POLYCHLORINATED DIBENZO-P-DIOXINS AND POLYCHLORINATED DIBENZOFURANS IN VEGETABLE OIL BY ISOTOPE DILUTION HRGC/HRMS

作　　者：张莉娜[1,2,3] 郎春燕[1] 李德豪[2] 李晓明 殷旭东[2] 牟靖芳 

机构地区：[1]成都理工大学,成都610059 [2]广东石油化工学院,茂名525000 [3]广东产品质量监督检验研究院,广州528300

出　　处：《粮食储藏》2012年第1期47-51,共5页Grain Storage

摘　　要：植物油加标后依次经过浓硫酸磺化、多段混合硅胶柱和氧化铝柱净化,采用高分辨气相色谱/高分辨质谱同位素稀释法对其中的17种2,3,7,8-氯取代二噁英类化合物进行测定。实验结果表明,用该法分析植物油样品,PCDD/Fs提取内标的平均回收率为60%～109%,RSD<8.10%,植物油样品平行四次的平均回收率为78.5%～100.3%,RSD为2.2%～8.4%,结果符合EPA1613的要求,证明应用该实验方法分析植物油中二噁英类化合物是准确可靠的。A method was evaluated for the determination of seventeen kinds of 2, 3, 7, 8--substitituted polychlorinated dibermo--p--dioxins and dibenzofurans （PCI）D/Fs） in vegetable oil sample by isotope dilution high resolution gas chromatography/high resolution mass spectrometry （HRGC/HRMS）. Sample was cleaned up successively with sulfonation reaction, multi--layer silica gel column and alumina gel column. The results showed that the recoveries were in the range of 60%-109%,RSD〈8.10%, average recoveries （n=4） of vegetable oil were 78.5%-100. 3%, RSD was 2.2%-8.4%, the results conformed to EPA1613. It is proved that the experimental method for the analysis of FCDD/Fs in vegetable oil is reliable.

关 键 词：二噁英 植物油 高分辨气相色谱/高分辨质谱 

分 类 号：TS227[轻工技术与工程—粮食、油脂及植物蛋白工程] O657.63[轻工技术与工程—食品科学与工程]