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| Determination of BHC and DDT Pesticide Residues in Cinnamomum Cassia Bark by Solid-phase Extraction and Capillary Gas Chromatography |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:cinnamomum cassia bark BHC DDT pesticide residues solid-phase extraction capillary gas chromatography |
| Author | Institution |
| 刘桂宁，强维 ，钟闱桢，文新 |
1.梧州出入境检验检疫局;2.上海安谱科学仪器有限公司 |
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| Abstract: |
| 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. |
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