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当前位置: 首页 > 文章 > 液相色谱-串联质谱法测定牛奶中11种光引发剂残留量 江西农业学报 2013 (7) 94-97，101
Position: Home > Articles > Determination of 11 Photo-initiators Residues in Milk by Liquid Chromatography-Tandem Mass Spectrometry Acta Agriculturae Jiangxi 2013 (7) 94-97，101

液相色谱-串联质谱法测定牛奶中11种光引发剂残留量

作  者：
张建莹;沈金灿;岳振峰;吴卫东;罗耀
单  位：
深圳出入境检验检疫局食品检验检疫技术中心
关键词：
液相色谱-质谱;牛奶;光引发剂;残留
摘  要：
建立了牛奶中11种光引发剂残留的定性和定量测定分析方法。样品经Carrez试剂沉淀蛋白质后,使用乙腈提取,HLB固相萃取柱净化,乙腈洗脱,洗脱液用氮气吹干后用50%乙腈水溶液定容,采用液相色谱-串联质谱进行测定。分析物采用电喷雾电离,正离子扫描,多反应监测(MRM)模式检测,其中7种光引发剂使用内标法定量,4种光引发剂使用外标法定量。11种光引发剂在5.00～200μg/L浓度范围内线性关系良好,相关系数均大于0.990。11种光引发剂的测定低限均为1.0μg/kg。在添加浓度1.00～100μg/kg范围内,加标回收率为74.3%～112%,相对标准偏差为0.57%～16.3%。本方法简便、有效、灵敏,适用于牛奶中光引发剂多残留的定量测定和确证。
译  名：
Determination of 11 Photo-initiators Residues in Milk by Liquid Chromatography-Tandem Mass Spectrometry
作  者：
ZHANG Jian-ying,SHEN Jin-can,YUE Zhen-feng,WU Wei-dong,LUO Yao(Food Inspection and Quarantine Technology Center,Shenzhen Exit-Entry Inspection & Quarantine Bureau,Shenzhen 518067,China)
关键词：
LC-TMS;Milk;Photoinitiator;Residue
摘  要：
A method for the qualitative and quantitative determination of 11 photoinitiators residues in milk by liquid chromatography-tandem mass spectrometry(LC-TMS) was developed.The samples were extracted with acetonitrile after being precipitated by Carrez reagent,and then cleaned by HLB solid phase extraction cartridge.The analytes were eluted by acetonitrile,and then reconstituted by 50% acetonitrile aqueous solution after being dried by nitrogen gas.LC-TMS was used for the determination.The analytes were determined by the mode of electro-spray ionization(ESI),positive ion scan,and multiple reaction monitoring(MRM),and internal standard method for the quantification of 7 photoinitiators and external standard method for the quantification of other 4 photoinitiators were used.Eleven photoinitiators within the concentration range of 5.00 ～ 200 μg / L showed good linear relationship with the correlation coefficient of more than 0.990.All the lowest limits of the quantitative determination were 1.00 μg / kg.The recoveries of 11 photoinitiators were between 74.3% and 112% when the adding concentrations were 1.00 ～ 100 μg / kg,and the relative standard deviations varied from 0.57% to 16.3%.This method was simple,effective and sensitive,and suitable for the quantitative determination and confirmation of photoinitiator residues in milk.

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