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近年来铅对人体的危害越来越受到关注 ,特别是大气血铅及环境中的铅污染对小学生的健康情况造成了潜在的危害。为了摸清我市的污染情况 ,特对本地的小学生进行了随机抽样调查 ,为今后开展预防与保健提供科学的依据。1 对象与方法1.1 检测对象 随机抽取本市各年级小学生 12 2
In recent years, the harm of lead to the human body has drawn more and more attention. In particular, lead in the blood and lead pollution in the environment have caused potential harm to the health of pupils. In order to find out the pollution in our city, we conducted a random sampling survey of local primary students to provide a scientific basis for prevention and health care in the future. 1 objects and methods 1.1 test objects randomly selected primary and secondary school students in this city 12 2