Characterization of atmospheric trace elements on PM2.5 particulate matter over the New York-New Jersey harbor estuary
Characterization of atmospheric trace elements on PM2.5 particulate matter over the New York-New Jersey harbor estuary
复制标题
DOI：
10.1016/s1352-2310(01)00381-8
复制
发表时间：
2002-02-01
影响因子：
5
通讯作者：
Eisenreich, SJ
中科院分区：
文献类型：
--
作者：
Gao, Y;Nelson, ED;Eisenreich, SJ
这项工作的目的是表征与纽约-新泽西州港湾上空2.5微米及更小尺寸的大气颗粒物(PM(2.5))有关的微量元素。使用低容量PM(2.5)采样器，在1998年1月至1999年1月期间，首次在该区域的三个地点同时采集了气溶胶颗粒样本，这三个地点是沿海的桑迪胡克、新不伦瑞克和附近城市地区的自由科学中心(泽西城)。用电感耦合等离子体质谱完成了样品中微量元素的分析。环境空气中的许多元素表现出从城市中心到海岸的强烈空间梯度，自由科学中心的大多数元素浓度明显高于其他两个地点。对于所有地点的大多数元素来说，季节模式并不明显，这表明它们的来源具有持续的贡献。铅、镉、锌、铜、镍、钒、锑等元素在结壳土壤中相对自然丰度的富集度为200~20000倍。造成这些元素大气负荷的主要来源包括化石燃料燃烧、石油燃烧、金属加工业和废物焚烧。这些与PM(2.5)有关的痕量元素在NY-NJ河口沿岸水域的大气干沉降可能占这些元素总干沉降通量的很大一部分。(C)2002爱思唯尔科学有限公司。保留所有权利。
The purpose of this work is to characterize trace elements associated with atmospheric particulate matter of 2.5 mum and smaller in Size (PM(2.5)) over the New York New Jersey (NY-NJ) Harbor Bight. Using low-volume PM(2.5) samplers, aerosol particulate samples were simultaneously collected for the first time at three locations in the region, Sandy Hook in the coast, New Brunswick and Liberty Science Center (Jersey City) in nearby urban areas, during January 1998-January 1999. Sample analysis for trace elements was accomplished by inductively coupled plasma mass spectrometry. Many elements in ambient air exhibit strong spatial gradients from urban centers to the coast, and the concentrations of most elements at Liberty Science Center are significantly higher than at the other two locations. Seasonal patterns are not apparent for most elements at all locations, suggesting continuous contributions from their sources. The elements Pb, Cd, Zn, Cu, Ni, V, Sb, are enriched by factors of 200 to 20,000 relative to their natural abundance in crustal soil. Major sources that contribute to the atmospheric loading of these elements include fossil fuel combustion, oil combustion, metal processing industry, and waste incineration. Atmospheric dry deposition of these trace elements associated with PM(2.5) to the coastal waters of the NY-NJ estuary may account for a significant portion of the total dry deposition fluxes for these elements. (C) 2002 Elsevier Science Ltd. All rights reserved.