MINIATURIZED METHOD BASED ON MATRIX SOLID-PHASE DISPERSION FOR THE RAPID SCREENING OF 36 PESTICIDES IN AGRICULTURAL FOOD COMMODITIES

被引：3

作者：

Covaci, Adrian ^{[1
]}

Mashiya, Jabulani G. ^{[2
]}

Molope, Itumeleng ^{[3
]}

Tshiame, Ishmael ^{[4
]}

Molatlhegi, Ronny ^{[3
]}

Ngobeni, Prince ^{[3
]}

机构：

[1] Univ Antwerp, Toxicol Ctr, B-2610 Antwerp, Belgium

[2] Tshwane Univ Technol, Dept Anim Sci, Pretoria, South Africa

[3] Tshwane Univ Technol, Dept Chem, Rosslyn, South Africa

[4] Tshwane Univ Technol, Dept Crop Sci, Pretoria, South Africa

来源：

ANALYTICAL LETTERS | 2010年 / 43卷 / 7-8期

关键词：

Fruit; Matrix solid-phase dispersion; Miniaturized method; Pesticides; South Africa; Validation; Vegetables; MASS-SPECTROMETRY; FRESH FRUITS; EXTRACTION; RESIDUES; VEGETABLES; CLEANUP;

D O I：

10.1080/00032710903518807

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Matrix solid-phase dispersion and gas chromatography-mass spectrometry were used for the rapid screening of 36 pesticides in agricultural products. Homogenized sample (0.5 g), C-8-modified silica (0.5 g) and Na2SO4 (1 g) were mixed and transferred to a cartridge containing activated silica (0.5 g). Best recoveries (> 60%) were found using dichloromethane-ethyl acetate (4: 1) for elution. Analytical characteristics at spiking levels (10-100 mu g/kg) were calculated for each pesticide. Matrix effects were studied by comparing the slopes of the matrix-matched calibration curves. Fruit and vegetable samples from South Africa complied with EU and South African current regulation, except for cypermethrin in green beans.

引用

页码：1400 / 1410

页数：11

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