MWCNT-分散固相萃取-气相色谱-串联质谱法检测茶油中11种有机磷农药残留  

Determination of 11 Organophosphorus Pesticide Residues in Camellia Oil by Gas Chromatography-Tandem Mass Spectrometry with Dispersive Solid-phase Extraction Using Multiwalled Carbon Nanotubes as Adsorbent

作　　者：张帆[1,2] 白珊[1] 王美玲 张莹 黄志强 李忠海[3] 钟海雁[3] ZHANG Fan BAI Shan WANG Mei-ling ZHANG Ying HUANG Zhi-qiang LI Zhong-hai ZHONG Hai-yan(Changsha Environmental Protection College, Changsha 410004, China Hunan Academy of Seienee and Teehnology for Inspection and Quarantine, Changsha 410004, China Faeuhy of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China)

机构地区：[1]长沙环境保护职业技术学院,中国长沙410004 [2]湖南省检验检疫科学技术研究院,中国长沙410004 [3]中南林业科技大学食品科学与工程学院,中国长沙410004

出　　处：《湖南师范大学自然科学学报》2017年第2期49-55,共7页Journal of Natural Science of Hunan Normal University

基　　金："十二五"国家科技支撑计划资助项目(2012BAK08B01);国家质检总局科技计划资助项目(2013IK160);粮油深加工与品质控制湖南省2011协同创新资助项目(湘教通[2013]448号)

摘　　要：建立了分散固相萃取净化-气相色谱-串联质谱测定茶油中11种有机磷农药残留的分析方法.样品采用乙腈提取,羧基化多壁碳纳米管和中性氧化铝混合吸附剂富集和净化,能够有效去除茶油中脂肪等杂质对测定结果的影响.本方法中11种有机磷农药在0.01~0.5 mg/L范围内,线性良好,相关系数为0.999 61~0.999 96;在0.02~0.1 mg/kg范围内,11种目标物的回收率为86.2%~112.6%,RSD为3.2%~11.2%.An analytical method has been developed for the determination of 11 organophosphorus pesticide residues in camellia oil by gas chromatography-tandem mass spectrometry with dispersive solid-phase extraction. The samples were extracted with acetonitrile and purified using carboxylated muhi-walled carbon nanotubes and neutral alumina sorbent, which could be used to remove fats and other impurities from the camellia oil that would affect the effectiveness of measurement results. Our results showed that the 11 organophosphorus pesticides had a good linearity in the range of 0.01 -0.5 mg/L and the correlation coefficients were between 0.999 61 to 0. 999 96. The recoveries at spiked levels of 0.02, 0.05, and 0.1 mg/kg for the 11 targets were 86.2% - 112.6% ,with their relative standard deviations in the range of 3.2% -11.2%.

关 键 词：多壁碳纳米管 分散固相萃取 气相色谱-串联质谱 茶油 有机磷农药 

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]