Citation: WANG Li, XIA Guanghui, SHEN Weijian, WU Bin, ZHANG Rui, LU Huiyuan, SHEN Chongyu, ZHAO Zengyun. Determination of trifluralin residue in aquatic products and edible oils by gas chromatography-negative chemical ionization mass spectrometry[J]. Chinese Journal of Chromatography, ;2014, 32(3): 314-317. doi: 10.3724/SP.J.1123.2013.12013 shu

Determination of trifluralin residue in aquatic products and edible oils by gas chromatography-negative chemical ionization mass spectrometry

WANG Li ¹ ,
XIA Guanghui ^2,3 ,
SHEN Weijian ^2,, ,
WU Bin ² ,
ZHANG Rui ² ,
LU Huiyuan ² ,
SHEN Chongyu ² ,
ZHAO Zengyun ²

1.
1. Jiangyan District Disease Prevention and Control Center of Taizhou City of Jiangsu Province, Taizhou 225500, China;

Corresponding author: SHEN Weijian,
Received Date: 12 December 2013
Available Online: 13 January 2014
Fund Project: 国家质检总局科技计划项目(2011KJ39,2012KJ31) (2011KJ39,2012KJ31)科技部科技支撑项目(2011BAK10B04). (2011BAK10B04)

A confirmatory method was established for the determination of trifluralin residue in aquatic products and edible oils with the technique of offline disperse solid phase extraction and gas chromatography-negative chemical ionization mass spectrometry (DSPE-GC-MS/NCI). Trifluralin was extracted from aquatic products and edible oils with acetonitrile, and liquid-liquid partitioning formed by adding anhydrous magnesium sulfate followed by a simple cleanup step known as dispersive solid-phase extraction. The aliquot was analyzed by GC-MS/NCI using isotope internal standard method. The method was reliable and stable. The recoveries of trifluralin were in the range from 80% to 100% at three spiked levels of 1.0, 2.0, and 3.0 μg/kg, and the RSDs were not more than 10.3%. The linearity of method was good from 1 to 40 μg/L, and the LOD was 0.02 μg/kg. This method can be used as a conclusive evidence method for the determination of trifluralin residue in aquatic products and edible oils.
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