在巴基斯坦拉合尔市的空气中微型塑料沉积的来源识别,特征和空间分布
Arhum Naqash1, Jamil Anwar1,2, Abdul Qadir3
1Department of Chemistry, School of Science, University of Management and Technology, Lahore, 54770, Punjab, Pakistan.
Environmental science and pollution research international
|August 31, 2024
概括
大气中的微塑料 (MP) 是一个全球性问题. 这项研究发现,巴基斯坦拉合尔的聚纤维含量很高,与织品和废物有关,强调需要更好地管理塑料废物.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 材料科学 材料科学 材料科学
背景情况:
- 大气中的微塑料 (MPs) 是一个重要的新兴的全球环境问题.
- 关于大气MP沉积的数据有限,特别是在巴基斯坦.
- 了解MP的来源和分布对于环境和健康影响评估至关重要.
研究的目的:
- 在巴基斯坦拉合尔调查大气微塑料的来源,类型和空间分布.
- 量化各个城市的微塑料在大气中的沉积率.
- 为了识别聚合物类型及其在大气沉降中的可能起源.
主要方法:
- 在拉合尔的23个不同地点使用收集盒采集大气沉降的样本.
- 化学处理以去除有机物质 (芬顿试剂,过氧化) 和密度分离 (化).
- 通过立体显微镜进行量化和使用减弱总反射率里埃变换红外光谱 (ATR-FTIR) 进行聚合物识别.
主要成果:
- 记录了大气中微塑料沉积的平均速度为2340 ± 1392颗/m2/day.
- 纤维构成了绝大多数 (96%) 已识别的微塑料,主要是聚.
- 高MP沉积率与人类活动密集的地区,交通和废物管理不足相关.
结论:
- 大气中的微塑料污染,特别是织品中的聚纤维,在拉合尔普遍存在.
- 交通和废物管理不善等城市因素对空气中的微塑料沉积有很大影响.
- 议员的表征对于告知环境法规和废物管理策略以减轻塑料污染至关重要.
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