Department of Environmental and Occupational Health, Dornsife School of Public Health, Drexel University, 3215 Market St, Philadelphia PA 19004, USA.
Department of Biostatistics, School of Public Health, West Virginia University, One Medical Center Drive, Morgantown, WV 26506-9190, USA.
Ann Work Expo Health. 2022 Apr 7;66(Suppl 1):i111-i123. doi: 10.1093/annweh/wxaa113.
The Deepwater Horizon oil spill response and clean-up (OSRC) involved over 9000 large and small vessels deployed in waters of the Gulf of Mexico across four states (Alabama, Florida, Louisiana, and Mississippi). For the GuLF STUDY, we developed exposure estimates of oil-related components for many work groups to capture a wide range of OSRC operations on these vessels, such as supporting the four rig vessels charged with stopping the spill at the wellhead; skimming oil; in situ burning of oil; absorbing and containing oil by boom; and environmental monitoring. Work groups were developed by: (i) vessel activity; (ii) location (area of the Gulf or state); and (iii) time period. Using Bayesian methods, we computed exposure estimates for these groups for: total hydrocarbons measured as total petroleum hydrocarbons (THC), benzene, toluene, ethylbenzene, xylene, and n-hexane (BTEX-H). Estimates of the arithmetic means for THC ranged from 0.10 ppm [95% credible interval (CI) 0.04, 0.38 ppm] in time periods 2 and 3 (16 July-30 September 2010) to 15.06 ppm (95% CI 10.74, 22.41 ppm) in time period 1a (22 April-15 May 2010). BTEX-H estimates were substantially lower (in the parts per billion range). Exposure levels generally fell over time and differed statistically by activity, location, and time for some groups. These exposure estimates have been used to develop job-exposure matrices for the GuLF STUDY.
墨西哥湾深海地平线石油泄漏反应和清理工作（OSRC）涉及在墨西哥湾四个州（阿拉巴马州、佛罗里达州、路易斯安那州和密西西比州）的水域中部署了 9000 多艘大小船只。在 GuLF STUDY 中，我们为许多工作团队开发了与石油相关成分的暴露估计值，以捕捉这些船只中广泛的 OSRC 作业，例如支持负责在井口停止泄漏的四个钻井船；撇油；原位燃烧石油；用浮标吸收和容纳石油；以及环境监测。工作团队是通过以下方式开发的：（i）船只活动；（ii）位置（海湾或州的区域）；和（iii）时间段。我们使用贝叶斯方法，为这些团队计算了暴露估计值，用于测量总碳氢化合物作为总石油碳氢化合物（THC）、苯、甲苯、乙苯、二甲苯和正己烷（BTEX-H）。THC 的算术平均值估计值在时间段 2 和 3（2010 年 7 月 16 日至 9 月 30 日）中范围从 0.10 ppm（95%可信区间（CI）0.04，0.38 ppm）到时间段 1a（2010 年 4 月 22 日至 5 月 15 日）中的 15.06 ppm（95% CI 10.74，22.41 ppm）。BTEX-H 的估计值要低得多（在十亿分之几的范围内）。暴露水平通常随时间下降，并且对于某些团队，在活动、位置和时间方面存在统计学差异。这些暴露估计值已用于为 GuLF STUDY 开发工作暴露矩阵。
