[Analysis of 5 pyrethroid pesticide residues in Hirudo and Hippocampus].
OBJECTIVE
To investigate the levels of 5 pyrethroid pesticide residues in two kinds of Chinese traditional medicines, i.e. Hirudo, Hippocampus.


METHODS
11 samples of Hirudo and 5 samples of Hippocampus were collected and identified. The 5 pyrethroid pesticide residues in samples were extracted by solid-phase extraction to remove the interferences of co-extractives, and then were analyzed by gas chromatorgraph (GC) equipped with an electron capture detector, qualified by the chromatographic peak's retention time and quantified by the external standard method.


RESULTS
The 5 pyrethroid pesticied residues were not detected in 5 samples of Hippocampus. Among 11 samples of Hirudo, the Cypermethrin were detected in all samples, and Fenvalerate were detected in 4 samples without exceeding the limit.


CONCLUSIONS
The result suggest that the Hippocampus are not contaminated by the residues of 5 pyrethroid pesticides. The precaution procedure should be taken to control pyrethroid pesticide residues in Hirudo.
School of Public Health, Peking University, Beijing 100083, China. wangqi@bjmu.edu.cn
Qi
Q
Wang
Qing
Q
Liu
Jun
J
Li
Hong-yu
HY
Jin
Rui-chao
RC
Lin
D000818:Animals; D004340:Drug Contamination / Q000517:prevention & control; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D047709:Hirudo medicinalis; D008419:Materia Medica / Q000737:chemistry*; D008516:Medicine, Chinese Traditional; D010573:Pesticide Residues / Q000032:analysis*; D011722:Pyrethrins / Q000032:analysis*; D015203:Reproducibility of Results; D023701:Smegmamorpha
D008419:Materia Medica; D010573:Pesticide Residues; D011722:Pyrethrins