Relationship of levels of personal exposure with ambient concentrations and levels of biological determinants in workers exposed to organic solvents

为探讨在使用混合溶剂(调查1)和单一甲苯(调查2)的工作场所进行固定监测和个人监测之间的关系，采集了三组空气样本。第一组样本(WP)是在工作场所均匀分布的多个点采集的，通过A抽样获得平均值。第二组(PW)是从工人附近的地方获得的，第三组(BZ)是从工人的呼吸区获得的。在两次调查中，每个空气样本的浓度之间都存在密切的相关性，即比较(PW)与(BZ)和(WP)与(BZ)的关系密切。在调查2中，空气中甲苯浓度与工人尿中甲苯和马尿酸浓度有密切关系。结果表明，工人附近场所的溶剂浓度是一个有用的指标，可以用来衡量大部分工作时间留在同一地点的工人的暴露程度。

To investigate the relationship among stationary monitoring and personal monitoring in workplaces using solvent mixture (survey 1) and single toluene (survey 2), three sets of air samples were taken. A first set of samples (WP) was taken at many points equally distributed in the workplace to get an average value by A sampling. A second set (PW) was obtained from places proximity of the workers, a third set (BZ) was secured from the breathing zone of the workers. In both surveys, close correlation were found among the concentrations for each air sampling, i.e. there was a close relationship when comparing (PW) to (BZ) and (WP) to (BZ). In survey 2, there was also a close relationship of the concentration of toluene in the air of (BZ) or (WP) with the concentration of toluene and hippuric acid in the urine of the workers. The results suggest that the concentration of solvents in the places proximity of workers is a useful indicator of the amount of exposure to workers who remained same place most of their working time.