深圳市市售茶叶卫生质量状况及其评价

Hygienic Quality of Commercial tea in Shenzhen

目的调查分析深圳市2003-2005年市售茶叶的卫生质量状况。方法调查深圳市市售茶叶中的铅、铜、六六六、滴滴涕含量。运用原子吸收光谱仪,按国标方法,测定3 a随机抽样市售茶叶的铅、铜含量;同时,按国标方法,运用气相色谱法测定其中六六六、滴滴涕含量。结果市售茶叶的铜、六六六、滴滴涕含量均处于限量标准范围以内,而铅含量相对较高,合格率为96．9％。结论深圳市市售茶叶卫生质量基本合格,仅铅的含量偏高。

[ Objective] To investigate the hygienic quality of the commercial tea in Shenzhen during the period of 2003 to 2005. [ Methods] The concentrations of lead, copper, 666 and DUT were investigated; atomic absorption spectrometry was applied to determine the concentration of lead, copper of the randomly sampled commercial tea for a continuous 3 days according to the international method; meanwhile, gas chromatography was applied to determine the concentration of 666 and DDT. [ Results]The concentrations of copper, 666 and DDT were all within the range of the GB standard, while that of the lead was rclatively high with a eligible rate of 96.9 %. [ Condusion] The quality of the commercial tea in Shenzhen is generally eligible; only the lead concentration was relatively high.