Five pyrethroid pesticide residues for three kinds of traditional Chinese medicines using GC-MS
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摘要: 采用浊点萃取反萃取样品前处理方法，建立气质联用测定杭白菊Chrysanthemum morifolium，白术Atractylodes macrocephala和山茱萸Cornus officinalis中甲氰菊酯、高效氯氟氰菊酯、氯菊酯、氯氰菊酯和氰戊菊酯等5种拟除虫菊酯类农药残留量的测定方法。选用聚乙二醇6000作为浊点萃取的提取剂，异辛烷为反萃取剂，HP-5MS色谱柱为分析柱，气相色谱质谱法进行检测，外标法计算含量。结果表明：5种拟除虫菊酯类农药在15.00~2 000.00 gkg－1范围内呈良好的线性关系，相关系数为0.955~0.999，检出限为0.63~3.10 gkg－1，定量限为2.10~10.31 gkg－1。3种中药的加标回收率为71.22%~91.00%，相对标准偏差（RSD）为3.20%~8.20%。该方法操作简单、安全，可应用于杭白菊、白术、山茱萸中5种拟除虫菊酯类农药残留的检测。图4表4参19Abstract: Methods for residual determination by gas chromatography mass spectrometry （GC-MS） of five pyrethroid pesticides in Chrysanthemum morifolium, Atractylodes macrocephala and Cornus officinalis were established. Cloud point extraction-back extraction was used as sample pretreatment method,and PEG 6000 was used as an extraction agent, isooctane was used as a back-extractant, a chromatographic column HP-5MS was used as an analytical column. Content was calculated by the external standard method using GC-MS. Results showed a linear range from 15.00 to 2 000.00 g kg－1 with favorable correlation coefficients （r=0.955－0.999）. For the five pyrethroid pesticides, the limit of detection was 0.63-3.10 gkg－1 and quantitation was 2.10－10.31 gkg－1. At spiked concentrations of 50.00-500.00 gkg－1, recoveries ranged from 71.22% to 91.00%. This proposed method can be applied to determine pyrethroid pesticide residues in Chrysanthemum morifolium, A. macrocephala, and Cornus officinalis. ［Ch, 4 fig. 4 tab. 19 ref.］
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https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.01.016
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