2016年至2021年在中国深的PM2.5中微量元素:度,时间和空间分布,以及相关的人类吸入暴露风险
Jialei Yang1, Xin Chen1, Xiaoheng Li2
1School of Public Health (Shenzhen), Sun Yat-sen University, Shenzhen, 518107, China.
The Science of the total environment
|August 28, 2024
概括
在深研究了细颗粒物 (PM2.5) 空气污染中的微量元素. 婴儿和儿童面临更高的风险,和对健康构成潜在威胁.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 大气化学 大气化学
背景情况:
- 工业和交通活动释放微量元素,造成吸入健康风险.
- 研究主要集中在水,食物和尘埃中的微量元素上,对细颗粒物 (PM2.5) 的注意力有限.
研究的目的:
- 分析深的PM2.5和相关微量元素的度,时间趋势和空间分布.
- 评估潜在的健康风险,特别是对于婴儿和儿童等弱势群体.
主要方法:
- 分析了2016年至2021年间从深三个地区收集的1424个空气样本.
- 检查PM2.5和微量元素度,时间变化和空间模式.
- 估计每日摄入量 (EDI),摄入量 (EDU) 和过量危险指数 (R) 的评估.
主要成果:
- 无论是PM2.5还是微量元素都显示出下降趋势和类似的季节性模式,在寒冷的月份达到峰值.
- 南山和龙冈地区的PM2.5和微量元素含量明显高于扬,与工业和交通因素有关.
- PM2.5在气象条件和微量元素水平之间起到了调解作用. 婴儿和幼儿的暴露风险较高.
结论:
- 虽然整体健康风险低于安全值,但和等致癌微量元素引起了显著关注.
- 了解PM2.5相关的微量元素对于有针对性的公共卫生干预至关重要,特别是对于儿童.
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