[Simultaneous determination of nine organochlorine pesticide residues in textile by high performance liquid chromatography].
A method for the simultaneous determination of pesticide and herbicide residues in cotton textile by high performance liquid chromatography coupled with diode array detector (HPLC-DAD) has been established. The pesticides and herbicides determined were 2,4-dichlorophenoxy (2,4-D), 2-methyl-4-chlorophenoxy acetic acid (MCPA), dichlorprop, mecoprop, 2,4, 5-trichlorophenoxy (2, 4, 5-T), 2-methyl-4-chlorophenoxy butyric acid (MCPB), beta-endosulfan, methoxychlor and 2, 2-bis (p-chlorophenyl)-1, 1-dichloroethene (DDE). Pesticide and herbicide residues in cotton products were extracted with acetone-petroleum ether by ultrasonic instrument. The extract was analyzed using an SGE C18 column with a linear gradient elution (methanol-phosphoric acid as mobile phase at a flow rate of 0.8 mL/min) and ultraviolet detection at 230 nm. The linear range was 0.5 - 10 mg/L, and the correlation coefficients were all greater than 0.998 8. By using acetone-petroleum ether(4 : 1, v/v) as solvent, the recoveries of nine organochlorine pesticides and herbicides at spiked levels of 0.5 - 2 mg/kg were 85.5% - 99.6%. The limits of detection (S/N = 3) were 0.05 mg/kg except MCPB, beta-endosulfan, methoxychlor and DDE that were 0.10 mg/kg. This method is of high accuracy, easy operation, satisfactory recoveries and good reproducibility. It could be used for the determination of the nine pesticides and herbicides in textile.
School of Materials Science &Engineering, Beijing Institute of Clothing Technology, Beijing 100029, China. zx163_0@126.com
Xiang
X
Zhang
Qing
Q
Liao
Yan
Y
Zhang