Brown C P, Spivey G H, Valentine J L, Browdy B L
J Toxicol Environ Health. 1980 Jul;6(4):877-83. doi: 10.1080/15287398009529906.
One hundred eleven workers at a secondary Pb smelter were surveyed to determine smoking and personal hygiene habits. Fifty-three percent of the smokers had blood Pb levels in excess of 60 micrograms/dl, compared to 31% of nonsmokers (p = 0.02). Among smokers, 66% of "heavy" smokers (greater than or equal to 1 pack a day) had blood Pb levels over 60 micrograms/dl, compared to 39% of the "light" smokers (p = 0.05). Those who kept their cigarettes on their person had a higher proportion of blood Pb greater than 60 micrograms/dl than workers who kept their cigarettes elsewhere (63 versus 36%, respectively; p = 0.08). The difference in blood Pb levels between smokers and nonsmokers may be due in part to direct environmental contamination of cigarettes or impaired lung clearance mechanisms, and could be important in workers with already elevated blood Pb levels.
对一家二级铅冶炼厂的111名工人进行了调查，以确定他们的吸烟和个人卫生习惯。53%的吸烟者血铅水平超过60微克/分升，相比之下，不吸烟者的这一比例为31%（p = 0.02）。在吸烟者中，66%的“重度”吸烟者（每天吸一包及以上）血铅水平超过60微克/分升，相比之下，“轻度”吸烟者的这一比例为39%（p = 0.05）。将香烟随身携带的工人血铅水平超过60微克/分升的比例高于将香烟放在其他地方的工人（分别为63%和36%；p = 0.08）。吸烟者和不吸烟者之间血铅水平的差异可能部分归因于香烟受到的直接环境污染或肺部清除机制受损，这对于血铅水平已经升高的工人可能很重要。
