Residential proximity to conventional and unconventional wells and exposure to indoor air volatile organic compounds in the Exposures in the Peace River Valley (EXPERIVA) study

IF 4.5 2区医学 Q1 INFECTIOUS DISEASES

International journal of hygiene and environmental health Pub Date : 2024-09-17 DOI:10.1016/j.ijheh.2024.114462

Coreen Daley , Miranda Doris , Marc-André Verner , Jad Zalzal , Romain Chesnaux , Laura Minet , Mary Kang , Heather L. MacLean , Marianne Hatzopoulou , Naomi Owens-Beek , West Moberly First Nations Chief and Council , Élyse Caron-Beaudoin

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引用次数: 0

Abstract

Background

In a previous study located in Northeastern British Columbia (Canada), we observed associations between density and proximity of oil and gas wells and indoor air concentrations of certain volatile organic compounds (VOCs). Whether conventional or unconventional well types and phases of unconventional development contribute to these associations remains unknown.

Objective

To investigate the associations between proximity-based metrics for conventional and unconventional wells and measured indoor air VOC concentrations in the Exposures in the Peace River Valley (EXPERIVA) study samples.

Methods

Eighty-four pregnant individuals participated in EXPERIVA. Passive indoor air samplers were analyzed for 47 VOCs. Oil and gas well legacy data were sourced from the British Columbia Energy Regulator. For each participant's home, 5 km, 10 km and no buffer distances were delineated, then density and Inverse Distance Square Weighted (ID²W) metrics were calculated to estimate exposure to conventional and unconventional wells during pregnancy and the VOC measurement period. Multiple linear regression models were used to test for associations between the well exposure metrics and indoor air VOCs. For exposure metrics with >30% participants having a value of 0, we dichotomized exposure (0 vs. >0) and performed ANOVAs to assess differences in mean VOCs concentrations.

Results

Analyses indicated that: 1) conventional well density and ID²W metrics were positively associated with indoor air acetone and decanal; 2) unconventional well density and ID²W metrics were positively associated with indoor air chloroform and decamethylcyclopentasiloxane, and negatively associated with decanal; 3) drilling specific ID²W metrics for unconventional wells were positively associated with indoor air chloroform.

Conclusion

Our analysis revealed that the association between the exposure metrics and indoor air acetone could be attributed to conventional wells and the association between exposure metrics and indoor air chloroform and decamethylcyclopentasiloxane could be attributed to unconventional wells.

Abstract Image

查看原文本刊更多论文

和平河谷暴露（EXPERIVA）研究中常规和非常规水井与室内空气挥发性有机化合物暴露的住宅距离

背景在之前位于不列颠哥伦比亚省（加拿大）东北部的一项研究中，我们观察到油气井的密度和邻近程度与室内空气中某些挥发性有机化合物 (VOC) 的浓度之间存在关联。目的研究和平河谷暴露（EXPERIVA）研究样本中常规和非常规油气井的邻近度指标与测得的室内空气挥发性有机化合物浓度之间的关系。被动式室内空气采样器分析了 47 种挥发性有机化合物。油气井遗留数据来自不列颠哥伦比亚省能源监管局。为每个参与者的家庭划定了 5 公里、10 公里和无缓冲区的距离，然后计算密度和反距离平方加权（ID2W）指标，以估计孕期和挥发性有机化合物测量期间与常规和非常规油气井的接触情况。采用多元线性回归模型来检验油井暴露指标与室内空气挥发性有机化合物之间的关联。对于 30% 参与者的暴露指标值为 0 的情况，我们对暴露指标进行了二分法处理（0 vs. 0），并进行方差分析以评估 VOCs 平均浓度的差异：1) 常规井密度和 ID2W 指标与室内空气中的丙酮和癸醛呈正相关；2) 非常规井密度和 ID2W 指标与室内空气中的氯仿和十甲基环五硅氧烷呈正相关，而与癸醛呈负相关；3) 非常规井的钻井特定 ID2W 指标与室内空气中的氯仿呈正相关。结论我们的分析表明，暴露指标与室内空气中丙酮之间的关联可归因于常规井，而暴露指标与室内空气中氯仿和十甲基环五硅氧烷之间的关联可归因于非常规井。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International journal of hygiene and environmental health 医学-传染病学

CiteScore

11.50

自引率

5.00%

发文量

151

审稿时长

22 days

期刊介绍： The International Journal of Hygiene and Environmental Health serves as a multidisciplinary forum for original reports on exposure assessment and the reactions to and consequences of human exposure to the biological, chemical, and physical environment. Research reports, short communications, reviews, scientific comments, technical notes, and editorials will be peer-reviewed before acceptance for publication. Priority will be given to articles on epidemiological aspects of environmental toxicology, health risk assessments, susceptible (sub) populations, sanitation and clean water, human biomonitoring, environmental medicine, and public health aspects of exposure-related outcomes.