在以往劳动卫生调查中发现从事铅作业而有长期嗜茶饮茶史的老工人 ,铅中毒发生率较低 ,且中毒程度也较轻。据此实践经验 ,已通过动物实验和对铅作业志愿接受用茶叶实验治疗受铅危害工人的观察 ,证实了茶叶驱铅的有效性[1,2 ] 。现在上述工作的基础上 ,拟将茶叶的驱铅作用与传统 In previous labor and health surveys, we found that older workers who engaged in lead work and had a long history of tea addiction had a lower incidence of lead poisoning and a lower degree of poisoning. Based on this practical experience, we have confirmed the effectiveness of lead removal by tea through animal experiments and voluntarily accepting experiments with lead in tea to treat workers exposed to lead. Now on the basis of the above work, it is intended to eliminate the role of tea and lead the traditional