论文部分内容阅读
美国职业卫生与安全局(OSHA)1978年规定职业性接触高浓度铅的工人,其血铅超过某一界值应进行医学调离(medical remoral);并于1979年3月1日开始实施。具体标准为:铅作业工人血铅达到或超过80μg/100g时,应调离八小时TWA空气铅浓度达到或超过100μg/m~3的车间;当血铅浓度连续二次小于或等于00μg/100g时,方能返回,其界限值表示为80/60,1980年改为70/50,以后又改为60/40。为探讨工龄在不同界限值时对调离
The Occupational Health and Safety Administration (OSHA) stipulated in 1978 that workers exposed to high concentrations of lead should reach medical remoral if their blood lead exceeds a certain threshold value. They were implemented on March 1, 1979. Specific standards: lead workers lead or exceed the blood lead to 80μg / 100g or more, should be transferred eight hours away from the TWA air lead concentration reached or exceeded 100μg / m ~ 3 workshop; when the blood lead concentration for two consecutive less than or equal to 00μg / 100g , The threshold is returned as 80/60, 70/50 in 1980, and 60/40 in the future. In order to explore the length of service at different thresholds on the tune away