在安阳市大气中的微塑料的特点
Chunyan Wang1, Mengxia Guo1, Bo Yan2
1Hebi Institute of Engineering and Technology, Henan Polytechnic University, Hebi, Henan, 458000, People's Republic of China.
Environmental monitoring and assessment
|March 9, 2024
概括
大气中的微塑料丰富度随着安阳市空气质量的下降而增加. 黑色纤维微塑料占主导地位,PM2.5采样最大限度地收集,造成呼吸风险.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 公共卫生 公共卫生
背景情况:
- 微塑料污染是一个日益关注的问题,有越来越多的证据表明大气运输.
- 了解城市空气中的微塑料特性对于评估环境和健康影响至关重要.
研究的目的:
- 调查安阳市大气中微塑料的数量,特征和来源.
- 评估空气质量与微塑料度之间的相关性.
- 评估人类呼吸道暴露在空气中的微塑料中的风险.
主要方法:
- 在不同的空气质量条件下收集总悬浮颗粒 (TSP),PM10和PM2.5样本.
- 使用立体显微镜和微红外光谱进行分析,用于识别和表征.
- 空气质量指数 (AQI) 和微塑料丰富度之间的相关性分析.
- 人类呼吸道暴露风险评估.
主要成果:
- 平均微塑料的数量从0.19件/立方米 (良好的空气质量) 增加到0.42件/立方米 (严重的污染).
- 黑色纤维微塑料约占空气中的微塑料总量的80%.
- PM2.5采样显示了最高的微塑料捕获效率.
- 纤维素,PET和EVA被确定为主要的微塑料成分.
- 成人的每日微塑料摄入量随着AQI的上升而增加,在高污染期间平均达到222±5微塑料/天.
结论:
- 空气质量显著影响城市环境中的大气微塑料度.
- 在捕获空气中的微塑料方面,PM2.5采样方法最有效.
- 空气中的微塑料对城市人口构成可量化的呼吸道暴露风险,特别是在污染条件下.
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