High-throughput analysis of pesticides in minor tropical fruits from Colombia

被引:13
|
作者
Angelica Varela-Martinez, Diana [1 ,2 ]
Angel Gonzalez-Curbelo, Miguel [1 ]
Gonzalez-Salamo, Javier [2 ]
Hernandez-Borges, Javier [2 ]
机构
[1] Univ EAN, Fac Ingn, Dept Ciencias Basicas, Calle 79 11-45, Bogota, DC, Colombia
[2] Univ La Laguna, Fac Ciencias, Unidad Dept Quim Analit, Dept Quim, Avda Astrofis Fco Sanchez S-N, San Cristobal La Laguna 38206, Spain
关键词
Pesticide residue monitoring; QuEChERS; Sample preparation; High-throughput analysis; Minor tropical fruits; Colombia; CHROMATOGRAPHY-MASS SPECTROMETRY; GAS-CHROMATOGRAPHY; RESIDUES; LIQUID; QUECHERS; FOOD; PROTECTANTS;
D O I
10.1016/j.foodchem.2018.12.045
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In this work, a method has been applied and validated for the determination of a group of 35 multiclass pesticides in the minor tropical fruits rose apple/pomarrosa (Syzygium malaccense), starfruit/carambola (Averrhoa carambola), yoyomo (Spondias purpurea) and papayuela (Vasconcellea pubescens) cultivated and exported in Colombia. The AOAC 2007.1 QuEChERS method, that uses an acetic acid/acetate buffer, was applied together with gas chromatography coupled to a triple quadrupole mass spectrometer. The method was validated in terms of calibration, recovery at three levels of concentration and matrix effects (MEs). A mixture of analyze protectants was also used. A good linearity was obtained in all cases, while the study of the ME revealed the need of developing matrix-matched calibration for many pesticides. Recovery values were in the range 70-120% with relative standard deviation values less than 20% for most of the pesticides studied. The lowest calibration level was 5 mu g/kg. Several samples of each type were analysed.
引用
收藏
页码:221 / 230
页数:10
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