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为综合评价不同环境低浓度铅对儿童健康的影响,按WHO“人体接触环境污染评价规划”,于1990年对北京市区及有乡镇企业的村镇.共322名儿童进行了铅的总接触量调查。1 对象与方法1.1 调查对象在本市4个城区随机选择4个全托幼儿园,每园整班选择本市出生并居住5年以上的5～6.5岁的健康幼儿128名。以同等条件在熔炼厂所在地牛堡屯乡及乡镇企业集中地乔庄乡幼儿园抽取194名幼儿。1.2 调查内容与方法1.2.1 环境监测大气用大流量采样器在6个幼儿园室外采集3～6天的总悬浮颗粒物;环境食品购自4个城区及两个乡的零售商店,同时采集了两个乡的自产
In order to comprehensively evaluate the impact of low-level lead in different environments on children’s health, according to the WHO “Environmental Exposure Assessment Program for Human Exposure”, a total of 322 children were surveyed for total lead exposure to urban areas in Beijing and township enterprises in 1990 survey. 1 Subjects and Methods 1.1 Survey In 4 cities in the city randomly selected four full-time kindergarten, the whole garden to choose the city to live and live in this city for more than 5 years, 128 children aged 5 to 6.5 healthy children. On the same terms, 194 toddlers were taken at Niu Fortun Township, the site of the smelter, and Qiaoxiang Kindergarten, a township and village collective. 1.2 Contents and Methods of Investigation 1.2.1 Environmental Monitoring Atmospheric samplers collected 3 to 6 days of total suspended particulates outdoors in 6 kindergartens. Environmental food was purchased from 4 urban areas and retail stores in 2 townships while two A township’s production