劳动卫生和职业医学工作中,往往要对职业接触者的生物样品中有关化学物质进行测定,其结果可通过与有关标准,即正常本底值对照比较后,作出评价和诊断。地区和测定方法的不同,往往会有不同的本底正常值。我们应用原子吸收法测定了广州地区34例非职业接触者尿中As、Cu、Mn、Ni、Pb和Zn等六种元素的含量水平,经统计处理,提供参考依 In labor, health and occupational medicine, the chemical substances in biological samples of occupational contacts are often measured and the results can be evaluated and diagnosed by comparison with the relevant standard, the normal background value. Different regions and measurement methods often have different background normal values. We used atomic absorption spectrophotometry to determine urinary levels of As, Cu, Mn, Ni, Pb and Zn in 34 non-occupational contact persons in Guangzhou. After statistical analysis,