通州区茶叶中有机氯农药残留及铅污染状况分析  

Analysis on Organochlorine Pesticide Residues and Heavy Metal Contaminates of Tea in Tongzhou District of Beijing

作　　者：郭虹[1] 杨玉竹[1] 

机构地区：[1]北京市通州区疾病预防控制中心理化检验科,北京101100

出　　处：《中国食品卫生杂志》2010年第6期551-553,共3页Chinese Journal of Food Hygiene

摘　　要：目的了解通州区部分茶叶中六六六、滴滴涕有机氯农药残留和重金属铅的化学污染状况。方法采用气相色谱法测定茶叶中六六六和滴滴涕农药残留,用原子吸收分光光度法测定重金属铅的含量。结果茶叶中六六六检出率为92.1%(35/38),合格率97.1%(34/35),超标率为2.9%(1/35),测定值范围在<0.4～385.0μg/kg之间。滴滴涕检出率为89.4%(34/38),合格率100%,测定值范围为1.4～189.0μg/kg,以p,p′-DDT的检出最多。重金属化学污染物铅检出率97.6%(37/38),各类茶叶中铅测定结果均低于标准限值。结论有机氯农药虽然禁用多年,但茶叶中六六六仍有较高残留,提示通州区茶叶中六六六和滴滴涕的农药残留状况不容乐观;重金属铅的检出率较高,食品卫生监督机构应加强监测,保证食品的安全和消费者的健康。Objective To find out the contamination of organochlorine pesticide residues and lead in tea in Tongzhou district. Method Pesticide residues of hexachlorocyclohexane （ HCH）,dichloro-diphenyl-trichloroethane （ DDT） were determined by gas chromatography and lead was determined by atomic absorption spectrometry. Results The detection rate of HCH was 92. 1% ; the qualified rate was 2. 9% ; the detection range was 0. 36-385 μg /kg. The detection rate of DDT was 89. 4% and the majority of them was p,p′-DDT; the detection range was 1. 4-189. 0 μg /kg. The detection rate of lead was 97. 6% . Conclusion It was suggested that the situation of HCH and DDT pesticide residues in tea was not optimistic and the level of lead remained high in Tongzhou district. More supervision is needed to guarantee the health of residents.

关 键 词：茶叶 有机氯 农药残留量 铅 污染 

分 类 号：S481.8[农业科学—农药学]