From the Department of Civil and Environmental Engineering, A. James Clark School of Engineering, University of Maryland, College Park, Maryland (K.Z., Q.C.); Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, Iowa (T.L., P.S.T.); Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa (W.B.); Human Toxicology Program, University of Iowa, Iowa City, Iowa (P.S.T.).
J Occup Environ Med. 2023 Jun 1;65(6):458-466. doi: 10.1097/JOM.0000000000002809. Epub 2023 Feb 20.
This study aimed to examine blood benzene, toluene, ethylbenzene, o-xylene, and m-/p-xylene (BTEX) concentrations and their trends contrasting construction workers with workers in other occupations from 1999 to 2014 in the United States. Methods: Using data from the National Health and Nutrition Examination Survey, quantile regressions were performed to investigate associations between occupation and blood BTEX concentrations. Results: We found that high-risk and construction occupations were associated with increased blood concentrations of toluene, o-xylene, and m-/p-xylene at the 50-90th percentiles (P 50-90 ), and ethylbenzene at P 70-90 . Moreover, although blood concentrations of ethylbenzene, o-xylene, and m-/p-xylene trended down among all US workers, no decreasing trend was observed for benzene and toluene among construction workers. Conclusions: Future studies are warranted to address questions about specific tasks to better assess VOC exposure from various trades.
本研究旨在检测美国从 1999 年到 2014 年期间，建筑工人与其他职业工人血液中苯、甲苯、乙苯、邻二甲苯和间/对二甲苯（BTEX）浓度及其变化趋势。方法：利用全国健康和营养调查的数据，进行分位数回归，以研究职业与血液 BTEX 浓度之间的关联。结果：我们发现，高风险职业和建筑工人在甲苯、邻二甲苯和间/对二甲苯的 50-90 百分位数（P50-90）和乙苯的 P70-90 处的血液浓度与较高的血液浓度有关。此外，尽管所有美国工人血液中的乙苯、邻二甲苯和间/对二甲苯浓度呈下降趋势，但建筑工人血液中的苯和甲苯浓度并未下降。结论：未来的研究有必要解决有关特定任务的问题，以更好地评估来自不同行业的挥发性有机化合物暴露情况。
