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茶叶中不仅含有蛋白质、氨基酸、糖、脂肪、丰富的维生素和矿物质,还具有特殊的药用价值。随着社会发展,生活水平提高,茶叶已经成为人们普遍喜爱的饮料。然而,茶叶中铅含量不易引起人们的注意。近年来我们在对茶叶的生产经营单位监督监测中发现。茶叶中铅的含量尤其是铁观音茶叶经常超过国家卫生标准,现将1997年～1999年对广州市部分茶叶生产经营企业抽样检测的茶叶中铅含量进行卫生学分析。1 材料与方法1.1 样品来源 1997年～1999年广州市茶叶生产经营企业销售的各种茶叶抽查检验。1.2 检验方法 按GB5009.12—96操作,用石墨炉原子吸收分
Tea contains not only protein, amino acids, sugar, fat, rich in vitamins and minerals, but also has special medicinal value. With the social development, improve living standards, tea has become a popular beverage. However, the lead content in tea is not easy to attract people’s attention. In recent years, we found in the supervision and monitoring of tea production and operation units. Lead content in tea, especially Tieguanyin tea often exceed the national health standards, now from 1997 to 1999, Guangzhou City, part of the tea production and sampling enterprises in the detection of lead in tea hygiene analysis. 1 Materials and Methods 1.1 Sample Sources 1997 to 1999, Guangzhou City, tea production and marketing enterprises selling a variety of tea spot checks. 1.2 test method according to GB5009.12-96 operation, with graphite furnace atomic absorption points