|
Title
|
|
|
|
Miniaturized method based on matrix solid-phase dispersion for the rapid screening of 36 pesticides in agricultural food commodities
| |
|
Author
|
|
|
|
| |
|
Abstract
|
|
|
|
| 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), C8-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 μg/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. |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
Analytical letters. - New York, NY
| |
|
Publication
|
|
|
|
New York, NY
:
2010
| |
|
ISSN
|
|
|
|
0003-2719
| |
|
Volume/pages
|
|
|
|
43
:7/8
(2010)
, p. 1400-1410
| |
|
ISI
|
|
|
|
000277838400031
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|