作为《有毒物质控制法》的一部分,美国环保局选择的前20种高度优先化学物质进行风险评估,根据2016年21世纪法案的FrankR.Lautenberg化学安全修订,1,3-丁二烯(1,3-BD)。由于许多与1,3-BD职业接触相关的文献与合成橡胶生产中使用该物质有关,并且很少发表1,3-BD制造工人接触的数据,对在制造或作为反应物处理该物质的设施收集的现有工业卫生数据进行了汇编和分析。该数据集包括2010年至2019年在美国各地的设施中收集的个人空气样本,并使用统一的数据收集模板汇编成一个数据库。公司指定为全班的数据按工作组和工作场所的三个操作条件之一进行了分层:常规,周转,和非常规。公司指定为短期和任务级的数据按任务描述进行分层,样本持续时间,和操作条件。最终的汇总数据库总共包含5,676个全班个人样本。工作组的1,3-BD的平均浓度范围为0.012ppm至0.16ppm。在常规操作下,作业组的1,3-BD空气浓度的高端估计值范围为0.014ppm至0.23ppm。汇总数据库还包括1063份短期和任务级个人样本。对于短期样本(<=15分钟),平均浓度范围从0.49ppm到3.9ppm,与最高浓度观察到的清洁和维护设备的任务。对于持续时间大于15分钟的任务样本,平均浓度范围为0.49至3.6ppm,在卸载和装载任务中观察到的最高浓度。除了个人空气采样记录,收集并分析了在各种任务中使用PPE的信息。该数据集提供了可靠的定量空气浓度数据和暴露控制信息,可以评估制造和加工中作为反应物使用条件的1,3-BD的职业暴露。
Among the first 20 high-priority chemical substances selected by USEPA to undergo risk evaluation as part of the Toxic Substances Control Act, as amended by the Frank R. Lautenberg Chemical Safety for the 21st Century Act of 2016 is 1,3-butadiene (1,3-BD). Because much of the literature related to occupational exposure to 1,3-BD is associated with the use of the substance in synthetic rubber production and few data have been published for exposures to 1,3-BD manufacturing workers, existing industrial hygiene data collected at facilities where the substance is manufactured or processed as a reactant were compiled and analyzed. The dataset was comprised of personal air samples collected between 2010 and 2019 at facilities located throughout the United States and was compiled into a single database using a uniform data collection template. Data designated by the companies as full-shift were stratified by job group and one of three operational conditions of the workplace: routine, turnaround, and non-routine. Data designated by the companies as short-term and task-level were stratified by task description, sample duration, and operational condition. The final aggregated database contained a total of 5,676 full-shift personal samples. Mean concentrations of 1,3-BD for the job groups ranged from 0.012 ppm to 0.16 ppm. High-end estimates of 1,3-BD air concentrations for the job groups under routine operations ranged from 0.014 ppm to 0.23 ppm. The aggregated database also included 1,063 short-term and task-level personal samples. For short-term samples (< =15 min), mean concentrations ranged from 0.49 ppm to 3.9 ppm, with the highest concentrations observed for the cleaning and maintaining equipment tasks. For task samples with durations greater than 15 min, mean concentrations ranged from 0.49 to 3.6 ppm, with the highest concentrations observed for the unloading and loading task. In addition to the personal air sampling records, information on the use of PPE during various tasks was compiled and analyzed. This data set provides robust quantitative air concentration data and exposure control information for which occupational exposures to 1,3-BD in the Manufacturing and Processing as a Reactant condition of use can be assessed.