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加拿大马尼托巴省政府先后在1979年和1983年颁布了工业卫生管理条例,分别规定接铅工人血铅浓度不超过700 μg/L和600 μg/L。为了解该省接铅工人近10年来血铅水平的变化,评价这2个条例在降低职业性血铅水平方面所起的作用,作者进行了这次研究分析。研究范围为马尼托巴省的10家有接铅作业的工厂。在1979～1987年间,每年从上述工厂的铅作业工人中采集血液标本699～1699份,共10190份。在设于温尼泊市的省中心实验室用石墨炉原子吸收光谱法作血铅定量分析,然后进行统计学处理。结果发现,血铅浓度为600～690 μg/L,700～790μg/L和高于800μg/L的比率,1979年分别为12.8％,8.4％
The Manitoba government in Canada enacted the regulations on industrial hygiene in 1979 and 1983, respectively, stipulating that lead-lead workers should not exceed blood lead concentrations of 700 μg / L and 600 μg / L respectively. In order to understand the change of blood lead levels in the province in the past 10 years and to evaluate the role played by these two regulations in lowering occupational blood lead levels, the author conducted this study. The study ranged from Manitoba’s 10 plants with lead work. Between 1979 and 1987, blood samples of 699 to 1699 blood samples were collected each year from a total of 10,190 blood samples collected from the lead workers in the above factories. Blood lead quantitative analysis was performed at the provincial center laboratory in Winnipeg using graphite furnace atomic absorption spectrometry before statistical processing. The results showed that blood lead levels were 600-690 μg / L, 700-790 μg / L and higher than 800 μg / L, respectively, in 1979 12.8%, 8.4%