Determination of BHC and DDT Pesticide Residues in Cinnamomum Cassia Bark by Solid-phase Extraction and Capillary Gas Chromatography[J]. 2014,33(1):103-107.
Determination of BHC and DDT Pesticide Residues in Cinnamomum Cassia Bark by Solid-phase Extraction and Capillary Gas Chromatography[J]. 2014,33(1):103-107.DOI:
A solid-phase extraction and capillary gas chromatographic method was developed for the determination of BHC & DDT pesticide residues in cinnamomum cassia bark.The pesticide residues were extracted by vortex oscillation using acetone-petroleum ether mixed solvent as extraction agent,and the extract was purified by solid-phase extraction technology.The proportion and dosage of the elution solvent were optimized,and the detection of targeted compounds was performed by GC/μECD.Under the optimal conditions,the calibration curves were linear in the range of 10-1 000 μg/L ,with correlations coefficients of 0.995 8-0.998 1.The average recoveries for BHC and DDT were in the range of 92.1%-112% with RSDs(n=5) of 2.8%-8.1%.The limits of detection(LODs) were 5.0×10-3-2.4×10-2 mg?kg-1,and the limits of quantitations(LOQs) were 1.3×10-2-6.0×10-2 mg?kg-1.The method was simple,sensitive,accurate and reproducible.
关键词
肉桂皮六六六滴滴涕农药残留固相萃取毛细管气相色谱
Keywords
cinnamomum cassia barkBHCDDTpesticide residuessolid-phase extractioncapillary gas chromatography