纳米竹炭分散固相萃取/超高效液相色谱-串联质谱法测定绿茶中的农药多残留

被引：21

作者：

周利

罗逢健

张新忠

姜亚萍

楼正云

刘光明

陈宗懋

机构：

[1] 中国农业科学院茶叶研究所农产品质量安全研究中心

来源：

分析测试学报 | 2014年 / 33卷 / 06期

关键词：

茶叶; 农药残留; 纳米竹炭; QuEChERS; 超高效液相色谱-串联质谱(UPLC-MS/MS);

D O I：

暂无

中图分类号：

O657.63 [质谱分析]; TS272.7 [产品标准与检验];

学科分类号：

070302 [分析化学]; 100403 [营养与食品卫生学];

摘要：

建立了纳米竹炭（Nano Bamboo Charcoal,NBC）作为QuEChERS（Quick,Easy,Cheap,Effective,Rugged and Safe）方法吸附剂,超高效液相色谱-串联质谱（UPLC-MS/MS）法测定绿茶中农药多残留的分析方法。茶叶样品采用乙腈-H2O提取,以NBC-PSA（N-丙基乙二胺）-无水MgSO4体系进行分散固相基质净化,经Acquity UPLC TSS-3 C18色谱柱（100 mm×2.1μm,1.8μm）分离后,UPLC-MS/MS多反应离子监测模式（MRM）检测,外标法定量。在0.02～0.50 mg/kg加标范围内,10种代表性农药的平均回收率为72.3%116.3%,相对标准偏差（RSD,n=5）为1.4%13.9%,方法的定量下限（LOQ）为0.02～0.04 mg/kg。结果显示,NBC作为QuEChERS分散固相吸附剂在回收率、检出限及精密度等方面均能满足农药残留分析的要求,且成本明显优于商品化基质分散吸附剂。

引用

页码：642 / 647

页数：6

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