在加利福尼亚州弗雷斯诺的儿童中,环境空气污染物混合物和肺功能
Wenxin Lu1,2, Ellen A Eisen1, Liza Lutzker3
1Division of Environmental Health Sciences, School of Public Health, University of California Berkeley, Berkeley, California, United States of America.
PloS one
|October 31, 2025
概括
颗粒物10 (PM10) 暴露显著损害了儿童的肺功能,较高的PM10与较低的FEV1和FEV1/FVC比率有关. 这项研究确定PM10是儿童肺容量减少的主要空气污染物危险因素.
科学领域:
- 环境健康 环境健康
- 儿科肺病学 儿科肺病学
- 流行病学 流行病学
背景情况:
- 环境空气污染物如颗粒物 (PM),臭氧 (O3) 和二氧化 (NO2) 与儿童肺功能减弱有关.
- 之前的研究可能由于高度的相互关联而产生了混杂的污染物效应.
研究的目的:
- 研究八种环境空气污染物与儿童肺功能之间的关系.
- 通过混合物分析,识别导致肺功能不良的主要污染物.
主要方法:
- 在加利福尼亚州弗雷斯诺进行前性队列研究 (CHAPS),对299名7岁和9岁儿童进行了评估.
- 使用GLI计算器进行标准化肺功能测量 (FEV1,FVC,FEV1/FVC比率).
- 评估了不同时间段对八种污染物 (PM2.5,PM10,NOx,NO2,O3,CO,EC,PAHs) 的平均每日住宅暴露量,并使用线性混合效应模型和q-gcomp.com进行分析.
主要成果:
- 观察到八种空气污染物之间的高度相关性,其中O3与其他污染物有负相关性.
- 增加暴露于PM10与FEV1和FEV1/FVC比率的降低有关,在3个月的暴露时间框架中最强烈.
- 基于量子的g计算确定PM10是与肺功能减弱相关的主要污染物.
结论:
- 在研究小组中,PM10被确定为研究小组中儿童肺功能受损的最重要危险因素.
- 弗雷斯诺的环境空气污染水平超过监管标准,对儿童的呼吸系统健康构成风险.
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