Manganese, Iron, and Total Particulate Exposures to Welders
Manganese, Iron, and Total Particulate Exposures to Welders
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DOI：
10.1080/15459620903454600
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发表时间：
2010-01-01
影响因子：
2
通讯作者：
Susi, Pam
中科院分区：
文献类型：
--
作者：
Flynn, Michael R.;Susi, Pam
焊工暴露在包括锰在内的各种金属烟雾中，这可能会增加患神经系统疾病的风险。这项研究考察了几个大型数据集，以表征焊接操作导致的锰、铁和总颗粒物暴露。数据集包含各种暴露改进剂的协变量，包括通风的存在、限制程度和个人采样器的位置(即，在焊接头盔后面或前面)。分析表明，接触锰经常达到或超过目前ACGIH(R)阈值限值0.2毫克/立方米(3)。此外，有证据表明，局部排气通风可以控制锰和总烟雾的暴露，但机械通风可能不能。数据表明，更高的暴露与更大程度的封闭有关，特别是在没有局部排气通风的情况下。一般来说，在头盔后面采集的样本比头盔外测量的样本要低。在锰、铁和总颗粒物暴露之间有很强的相关性，建议使用简单的公式来估计其中一个烟雾成分与其他任何一个。
Welders are exposed to a variety of metal fumes, including manganese, that may elevate the risk for neurological disease. This study examines several large data sets to characterize manganese, iron, and total particulate mass exposures resulting from welding operations. The data sets contained covariates for a variety of exposure modifiers, including the presence of ventilation, the degree of confinement, and the location of the personal sampler (i.e., behind or in front of the welding helmet). The analysis suggests that exposures to manganese are frequently at or above the current ACGIH (R) threshold limit value of 0.2 mg/m(3). In addition, there is evidence that local exhaust ventilation can control the exposures to manganese and total fume but that mechanical ventilation may not. The data suggest that higher exposures are associated with a greater degree of enclosure, particularly when local exhaust ventilation is absent. Samples taken behind the helmet were, in general, lower than those measured outside of it. There were strong correlations among manganese, iron, and total particulate mass exposures, suggesting simple equations to estimate one fume component from any of the others.