GC-MS法测定食用油中邻苯二甲酸酯类物质的含量  

Determination of phthalic acid esters in edible oil by GC-MS

作　　者：刘杰[1] 白妮 

机构地区：[1]延安市疾病预防控制中心,陕西延安716000 [2]延安市中医院,陕西延安716000

出　　处：《粮油食品科技》2012年第4期24-26,30,共4页Science and Technology of Cereals,Oils and Foods

摘　　要：监测日常桶装食用油中邻苯二甲酸酯类化合物的污染状况。样品经乙腈—正己烷溶解,SILICA/PSA玻璃混合型固相萃取柱净化,氮气吹干,正己烷定容,气相色谱—质谱(GC—MS)联用分析技术测定,外标法定量。方法检测的最低浓度为0.01 ng/g～0.1 ng/g之间,加标回收率为85.59%～112.98%之间,相对标准偏差在2.48%～12.07%之间。方法适用于食用油中邻苯二甲酸酯定性和定量测定。Pollution condition of phthalic acid esters in plastic bottled edible oil was monitored. The sample was dissolved in acetonitrile - N -hexane and purified by SILICA/PSA glass hybrid solid phase extraction column, which was dried by nitrogen and dissolved by N -hexane. It was measured by gas chromatography- mass spectrometer （GC -MS） and external standard method. The minimal concentration was 0.01 - 0. lng/g, the recovery rate 85.59% - 112.98%, and the relative standard deviation （RSD） 2.48% - 12.07%. The results showed that this method was suitable for qualitative and quanti- tative determination of phthalic acid esters in edible oil.

关 键 词：气相色谱-质谱 SILICA/PSA玻璃混合型固相萃取柱 邻苯二甲酸酯 食用油 

分 类 号：TS207.5[轻工技术与工程—食品科学] TS227[轻工技术与工程—食品科学与工程]