Journal de l'alimentation, de la nutrition et de la santé de la population Libre accès

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Multi-Residue Determination of Pesticides in Vegetables on Dalian Market by Gas Chromatograph, 2009-10

Liang Fu, Shengzhong Dong, Shiyang Liu and Fangxu Xu

This paper presents results from surveillance of pesticide multi-residues in vegetables carried out in 2009-10. 420 samples of 10 different types of fresh vegetables were analyzed for their pesticide multi-residue contents using gas chromatograph and NY/T 761-2008 pesticide multi-residue screen methods. The residues exceeded MRLs of forbidden pesticides found were: carbofuran 0.110 mg/kg (kidney bean) and methamidophos 0.037 mg/kg (celery) in January 2009, methamidophos 0.037 mg/kg (tomato) in May 2009, aldicarb 0.013 mg/kg (kidney bean) in September 2009, omethoate 2.200 mg/kg (celery) in November 2009, carbofuran 0.052 mg/kg (green pepper) in April 2010, parathion 0.056 mg/kg (celery) and carbofuran 0.030 mg/kg (celery) in July 2010. Also, chlorpyrifos used as unforbidden pesticide was most frequently found above MRL, rape (0.820 mg/ kg) and celery (0.365 mg/kg) in January 2009, celery (0.330 mg/kg) in May 2009, lettuce (0.298 mg/kg) in September 2009, rape (0.910 mg/kg) in April 2010 and lettuce (0.230 mg/kg) in July 2010. In addition, cypermethrin used as unforbidden pesticide was found above MRL only once in rape (1.270 mg/kg) in May 2009 and none of unforbidden pesticides above MRL was found in November 2009 and January 2010. Most of the samples (96%) were up to the national standard.