吉林省代用茶中铅含量检测分析及限量标准建议

Detection and analysis of lead content in tea substitutes in Jilin province and suggestions on limit standard

中文关键词:  吉林省  代用茶  铅  标准

英文关键词:Jilin province  tea substitutes  lead  standard

中文摘要:

      目的 测定吉林省特色代用茶中铅含量, 并对地方特色代用茶中铅限量标准的设定提出建议。方法 在吉林省流通领域购买代用茶样品69份, 采用微波消解法对样品进行处理, 用石墨炉原子吸收光谱法测定样品中的铅含量。结果 在本次检测的69份代用茶样品中, 铅检出率为82.6%, 所有样品中铅的含量均低于5.0 mg/kg。结论 目前吉林省不同种类代用茶中铅含量都不高, 但是仍然需要尽快修订铅含量限量标准, 便于质量安全监管。

英文摘要:

      Objective To determine the lead content in the tea substitutes in Jilin province, and put forward suggestions on the setting of the lead limit standard for local specialty substitute tea. Methods Sixty-nine substitute tea samples were purchased in the markets in Jilin province, and the samples were processed by microwave digestion. The lead contents in the samples were determined by graphite furnace atomic absorption spectrometry（GF-AAS）. Results In the 69 tea samples, the positive lead detection rate was 82.6%, and the lead content in all samples was less than 5.0 mg/kg. Conclusion At present, the lead content in different types of tea substitutes in Jilin province is not high, but it is still necessary to revise the lead content limit standard as soon as possible to facilitate quality and safety supervision.