Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume
45, Number 7, August 2007, pp. 375-399
Multiresidue Determination of 77 Pesticides in
Textiles by Gas Chromatography–Mass Spectrometry
Xiao Zhou[1], Mingtai Wang[1], Zhe Sun[2], Aijun
Li[1], Liming Xu[1], Jun Mu[1], and Lijun Lu[1]
[1]Jilin Entry-Exit Inspection and Quarantine Bureau, 1301 Puyang
St., Changchun, 130062 China and
[2]Institute of hydrochemistry,
Technical University of Munich, D-81377 München, Germany
A simple and efficient method for multiple determination
of 77 pesticides, including one organonitrogen, eight carbamate,
12 pyrethroid, 26 organochloride, 30 organophosphorous compounds,
in textiles is developed. Six representative textiles are chosen
as test samples. Extraction using hexane–ethyl acetate (1:1)
assisted by ultrasonic processor is carried out twice, followed
by clean-up using solid-phase extraction on a florisil column.
The final solution is analyzed using gas chromatography–mass
spectrometry, and 77 pesticides are determined. This method is
highly sensitive, selective, and reproducible, with a broad linear
range and reliable accuracy. Six blank samples are spiked with
0.50 and 2.00 mg/kg of the 77 pesticides, and the corresponding
recoveries are between 64.5% and 99.1%; the precisions range from
4.04% to 14.78%; and the minimum detection limits of this method
are 0.02–-0.20 mg/kg.
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