Sierra P, Loranger S, Kennedy G, Zayed J
Département de Médecine du Travail et d'Hygiène du Milieu, Université de Montréal, Canada.
Am Ind Hyg Assoc J. 1995 Jul;56(7):713-6. doi: 10.1080/15428119591016746.
Inhalation exposure to manganese (Mn) was measured for a group of garage mechanics and a control group of nonautomotive workers. The airborne Mn exposure of 35 garage mechanics suspected of being relatively highly exposed to Mn from MMT was measured at the workplace over one-week period. It also was measured for 30 nonautomotive workers at the University of Montreal. The environmental exposure also was measured for the two groups, as was the exposure to three other metals, aluminum (Al), iron (Fe), and zinc (Zn). At work the mechanics were exposed to Mn concentrations varying from 0.010 to 6.673 micrograms m-3 with a mean of 0.45 microgram m-5, while the control group was exposed to concentrations varying from 0.011 to 1.862 microgram m-3 with a mean of 0.04 microgram m-3. The mean environmental exposure for the two groups was similar to the Mn concentrations gathered in Montreal in 1992. Workplace concentrations of Al, Fe, and Zn also were higher for the garage mechanics. The results suggest that less than 10% of the Mn exposure of the garage mechanics was due to MMT. The levels of the metals measured were below the established limits for industrial and even environmental exposure.
对一组汽车修理工和一组非汽车行业工人的对照组进行了吸入性锰（Mn）暴露测量。对35名怀疑因使用甲基环戊二烯三羰基锰（MMT）而相对高暴露于锰的汽车修理工，在工作场所进行了为期一周的空气中锰暴露测量。同时也对蒙特利尔大学的30名非汽车行业工人进行了测量。还对两组人员的环境暴露进行了测量，以及对其他三种金属，铝（Al）、铁（Fe）和锌（Zn）的暴露情况进行了测量。工作时，修理工接触的锰浓度在0.010至6.673微克/立方米之间，平均为0.45微克/立方米，而对照组接触的浓度在0.011至1.862微克/立方米之间，平均为0.04微克/立方米。两组的平均环境暴露与1992年在蒙特利尔收集的锰浓度相似。汽车修理工工作场所的铝、铁和锌浓度也更高。结果表明，汽车修理工的锰暴露中，因MMT导致的不到10%。所测量的金属水平低于工业甚至环境暴露的既定限值。
