Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume
48, Number 1, January 2010, pp. 7-11
Determination of the Residues of 18 Carbamate
Pesticides in Chestnut and Pine Nut by GPC Cleanup and UPLC–MS–MS
Qin-Bao Lin1, Yuan-Yuan Xue1, and
Huan Song2
1 Institute of Applied Chemistry, Shanxi University, Taiyuan
030006, P.R. China; and
2 Shanxi Border Inspection and Quarantine Bureau,
Taiyuan 030024, P.R. China
A new method using gel permeation chromatography
(GPC) cleanup followed by ultra-performance liquid chromatography
combined with tandem mass spectrometry (UPLC–MS–MS)
has been established for simultaneous determination of 18 carbamate
pesticides in nuts (chestnut and pine nut). Recoveries obtained
by fortifying nut (spiking at 0.02 mg/kg) range from 70.21% to
89.56%. The proposed method features good sensitivity. Its limits
of quantification are low enough to allow pesticide residues
to be determined at concentrations below the maximum residue
levels legally accepted. The precision, expressed as relative
standard deviation, ranges from 2.26% to 4.07%.
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