Successive monitoring surveys of selected banned and restricted pesticide residues in vegetables from the northwest region of China from 2011 to 2013

Table 1 The Recovery, RSD, LOD, and LOQ of pesticides^a

Pesticides	Recovery (%)	RSD (μg/mL)	R²	LOD (mg/kg)	LOQ (mg/kg)	MRL^b (mg/kg)
Acephate	87.5	0.04–20	0.9996	0.005	0.017	0.02
Carbaryl	89.3	0.10–20	0.9996	0.025	0.083	1
Carbofuran	89.8	0.10–20	0.9997	0.025	0.083	0.5–2
Chlorpyrifos	96.1	0.04–20	0.9995	0.005	0.033	0.5
Cyhalothrin	106.4	0.02–20	0.9994	0.005	0.017	0.2
Cypermethrin	93.2	0.02–20	0.9996	0.005	0.017	0.5
Decamethrin	101.7	0.02–20	0.9993	0.005	0.017	0.2
Dichlorvos	93.6	0.04–20	0.9995	0.005	0.033	0.02
Dicofol	106.9	0.04–20	0.9995	0.005	0.017	0.01–1
Dimethoate	104.7	0.04–20	0.9996	0.005	0.017	1
Ethion	93.8	0.04–20	0.9991	0.01	0.033	0.05
Ethoprophos	82.4	0.04–20	0.9994	0.01	0.017	0.01
Fenitrothion	88.5	0.04–20	0.9992	0.005	0.017	0.2
Fenthion	88.4	0.04–20	0.9994	0.01	0.017	0.05–1
Fenvalerate	109.1	0.02–20	0.9992	0.005	0.017	0.05
Isazofos	83.1	0.04–20	0.9991	0.005	0.017	0.03
Malathion	85.6	0.04–20	0.9994	0.01	0.017	0.5
Methidathion	86.6	0.04–20	0.9993	0.005	0.017	0.02
Methomyl	87.1	0.10–20	0.9991	0.025	0.083	1
Metolcarb	81.4	0.10–20	0.9995	0.025	0.083	0.05–1.0
Monocrotophos	93.7	0.04–20	0.9998	0.005	0.017	0.01
Omethoate	84.6	0.04–20	0.9997	0.005	0.033	0.02
Parathion	94.2	0.04–20	0.9996	0.005	0.033	0.05
Parathion-methyl	91.9	0.04–20	0.9997	0.01	0.033	0.1–0.5
Permethrin	92.7	0.02–20	0.9997	0.005	0.017	/
Phorate	90.2	0.04–20	0.9995	0.005	0.017	0.2–0.5
Phosmet	91.7	0.04–20	0.9992	0.005	0.017	0.5
Phoxim	89.4	0.04–20	0.9996	0.005	0.017	0.05
Pirimicarb	89.3	0.10–20	0.9995	0.025	0.083	0.02
Propoxur	76.9	0.10–20	0.9993	0.025	0.083	0.01
Quinalphos	91.6	0.04–20	0.9997	0.01	0.033	0.2
Trichlorfon	92.3	0.10–20	0.9995	0.01	0.017	0.01

^a RSD relative standard curve, R ² correlation coefficient, LOD Limit of detection, LOQ Limit of quantification, MRL Maximum residue limit
^bRefer to GB2763–2014 National food safety standard: Maximum residue limits for pesticides in food

ISSN: 1471-2458