一项基于运动的研究,研究中部喜马拉雅山脉中颗粒物物质的物理化学表征和来源分配
Vikas Rawat1,2, Narendra Singh3, Surendra K Dhaka4
1Aryabhatta Research Institute of Observational Sciences, Nainital, 263001, India.
Environmental science and pollution research international
|November 22, 2025
概括
印度中部喜马拉雅山脉的颗粒物 (PM2.5和PM10) 经常超过世卫组织的限制,冬季的水平更高. 来自和等元素的健康风险令人担忧,需要有针对性的缓解.
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:
- 颗粒物 (PM2.5和PM10) 在全球范围内对健康构成重大风险.
- 关于PM在喜马拉雅中部地区的来源和健康影响的数据有限.
- 印度的Uttarakhand面临着独特的环境挑战,因为其地理和人类活动的多样性.
研究的目的:
- 在Uttarakhand进行PM2.5和PM10物理化学特征的基于活动的评估.
- 确定导致颗粒物污染的主要来源.
- 评估该地区暴露于颗粒物的潜在健康风险.
主要方法:
- 冬季和夏季在13个地区使用的低体积PM采样器.
- 先进的分析技术:X射线衍射 (XRD),扫描电子显微镜与能量分散式X射线光谱 (SEM-EDX) 和诱导合等离子体质谱 (ICP-MS).
- 受体建模 (正矩阵因子化 - PMF) 和健康风险评估.
主要成果:
- PM2.5 (20-125 μg/m3) 和PM10 (25-190 μg/m3) 度经常超过世卫组织的指导方针.
- 冬季较高的PM2.5/PM10比率表明人为来源,而夏季显示地的影响.
- PMF确定矿物灰尘和燃烧是PM10的主要来源,以及PM2.5.5的灰尘和生物质燃烧.
- 检测到致癌矿物质 (石英,血) 和诸如Cd,Al和Cr之类的元素,对健康构成风险.
结论:
- 在Uttarakhand,PM水平和来源存在显著的空间和季节性变化.
- 人为活动和自然尘埃是PM污染的主要原因.
- 潜在的非致癌和致癌健康风险需要紧急的缓解策略.
- 进一步的研究应该包括更广泛的污染物范围,以全面理解.
关键词:
中部喜马拉雅山脉 (CH)健康风险评估健康风险评估在ICP-MS中,使用的是ICP-MS.颗粒物质 (PM) 是指颗粒物质 (PM) 是指颗粒物质 (PM) 是指颗粒物质.阳性矩阵分解因子在 SEMEDX 中.更多相关视频
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