评价了分析过程中不同条件下使用分散固相萃取( D-SPE)材料净化对农残分析定量结果可靠性的影响,表明通过条件优化,可明显减小定量误差,并取得满意的回收率.建立了蔬菜中112种农药的多反应监测-气相色谱-串联质谱(GC-MS/MS)检测方法.在pH 5 ~7范围内,样品经乙腈-甲苯(8∶1,v/v)匀浆提取,每5 mL提取液加入0.8g无水硫酸镁、0.05g石墨化炭黑(GCB)、0.1g乙二胺-N-丙基甲硅烷(PSA)、0.05gC18粉末,分散固相萃取法净化,采用气相色谱-三重串联四极杆质谱( GC-QQQ-MS/MS)在多反应监测模式(MRM)下进行测定,内标法定量.分别对韭菜、黄瓜、紫甘蓝进行3个水平的加标回收试验(20、50、200μg/kg),其回收率范围为53.1%~138.7%,其中86种农药的3个加标水平的回收率范围均为65.0%~ 120.0%,方法的相对标准偏差(RSD)小于12%,方法的定量限(LOQ)范围为1.6~13.4 μg/kg.对从市场采集的蔬菜样品进行了测定,检出了三唑磷、甲氰菊酯等农药残留.该方法样品前处理简单快速,灵敏度、准确度和精密度均符合农药多残留检测技术的要求,适用于蔬菜中112种农药残留的快速筛查测定.
参考文献
[1] | Anastassiades M,Lehotay S J,Stajnbaher D,et al.J AOAC Int,2003,86:412 |
[2] | Ge Z R.Japanese Positive List System Maximum Residue Limits of Agricultural Chemicals in Foods (Volume of Agricultural Chemicals).Beijing:Standards Press of China(葛志荣.日本肯定列表制度——食品中农业化学品残留限量·药品卷.北京:中国标准出版社),2006 |
[3] | Lin W X.The Compilation of Residue Limits Standards for Pesticides and Veterinary Drugs in Foodstuffs in the World.Dalian:Dalian Maritime University Press(林维宣.各国食品中农药兽药残留限量规定.大连:大连海事大学出版社),2002 |
[4] | Institute for the Control of Agrochemicals,Ministry of Agriculture.The Compilation of Residue Limit Standards for Pesticides in Agricultural Products.Beijing:China Agriculture Press(农业部农药检定所.农产品农药残留限量标准汇编.北京:中国农业出版社),2001 |
[5] | AOAC.AOAC Official Method 2007.01 (2007-9-8)[2011-12-20]http://www.weber.hu/PDFs/QuEChERS/AOAC_200701.pdf |
[6] | GB/T 19648-2006 |
[7] | SN/T 1739-2006 |
[8] | Jia L J,Deng Y Y.Chinese Journal of Chromatography(贾丽娟,邓芸芸.色谱),2008,26(6):697 |
[9] | Wu G,Bao X X,Wang H X,et al.Chinese Journal of Chromatography(吴刚,鲍晓霞,王华雄,等.色谱),2008,26(5):577 |
[10] | Yang H.Guo H,Zhao W J,et al.Journal of Analytical Science (杨红,郭华,赵维佳,等.分析科学学报),2005,21(2):155 |
[11] | Lehotay S J,Son K A,Kwon H,et al.J Chromatogr A,2010,1217:2548 |
[12] | Huang J R,Kong X H,Yao B H,et al.Chinese Journal of Chromatography(黄江锐,孔祥虹,姚秉华,等.色谱),2011,29(10):974 |
[13] | Lin Q B,Shi H J,Xue P.Chromatographia,2010,72:1143 |
[14] | Castillo M,González C,Miralles A.Anal Bioanal Chem,2011,400(5):1315 |
[15] | Garg P,Pardasani D,Mazumder A,et al.Anal Bioanal Chem,2011,399(2):955 |
[16] | Li X H,Guo W H,Zhou Q L,et al.Polym Bull,2007,59(5):685 |
[17] | Deng Z B,Hu J Y,Qin D M,et al.Chromatographia,2010,71:679 |
[18] | Zhang J H,Jiang M,Zou L J,et al.Anal Bioanal Chem,2006,385(4):780 |
[19] | Payá P,Anastassiades M,Mack D,et al.Anal Bioanal Chem,2007,389(6):1697 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%