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| Detection of Matrix Effects of 17 Carbamate Pesticides in 5 Vegetables by QuEChERS/LC-MS/MS Method |
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| DOI： |
| KeyWord:QuEChERS matrix effects liquid chromatography-tandem mass spectrometry vegetables carbamate pesticides |
| Author | Institution |
| XU Wen-juan*,WANG Zhen-gang,DING Kui-ying,SUN Jun,GUO Li-qiang |
1.潍坊出入境检验检疫局;2.潍坊医学院附属医院 |
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| Abstract: |
| A QuEChERS coupled with liquid chromatography-tandem mass spectrometric(LC-MS/MS) method was developed for the detection of 17 carbamate pesticides in five vegetables.The matrix effects in ginger,scallion,cucumber,carrot and cabbage,together with the influences of matrix type,matrix concentration and pesticide concentration on the matrix effects were discussed.The results showed that,the liner ranges of 17 pesticides in different vegetables ranged from 5 μg/L to 100 μg/L,and the recoveries ranged from 76.5% to 111.8% with relative standard deviations of 2.5%-8.2%.Different vegetables present different matrix effects for the responses of 17 pesticides in LC-MS/MS,mostly the matrix suppression effects,which were impacted by matrix type,matrix concentration and pesticide concentration.In addition,the matrix effects of thiodicarb and diethofencarb in carrot and thiodicarb in cucumber ranged from 0.8-1.1 despite of matrix concentrations and pesticide concentrations,suggesting the matrix effects of these circumstances advisably being ignored in routine testing.However,the matrix effects must be considered carefully during detection procedures of 17 carbamate pesticides in ginger,scallion,cucumber,carrot and cabbage. |
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