Trace elements in atmospheric precipitation at Northern Jordan measured by ICP-MS: acidity and possible sources
Trace elements in atmospheric precipitation at Northern Jordan measured by ICP-MS: acidity and possible sources
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DOI：
10.1016/s1352-2310(03)00562-4
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发表时间：
2003-10-01
影响因子：
5
通讯作者：
Al-Momani, IF
中科院分区：
文献类型：
--
作者：
Al-Momani, IF
从1998年12月至2000年4月，在约旦北部的一个农村地区使用24小时抽样收集了雨水样本。对所有样品进行了主要离子(Na+、K+、Ca2+、H+、Mg2+、NH4+、Cl-、NO3-和SO4-)和微量金属(铅、镉、锌、铜、铝、铁、锰、钼、镍、锑和钒)的分析。大部分收集到的雨水样本的酸碱值均高於5.6。平均pH值为6.4+/-0.9。高pH值归因于含有大量方解石的天然碱性局部粉尘的中和作用。年平均SO42-/NO3-比为1.8，接近污染较严重地区的观测结果。测量到的物种浓度低于世界其他农村地区报告的浓度。人为成因元素(锌、铅、砷、锑、银、镉)在地壳成分上高度富集化。通过因子分析可以确定四个来源组，即地壳尘埃、海盐喷雾、道路交通和燃烧以及二次气溶胶形成过程。(C)2003爱思唯尔有限公司。保留所有权利。
Rainwater samples were collected in a rural region in Northern Jordan using 24-h sampling periods from December 1998 to April 2000. All samples were analyzed for major ions (Na+, K+, Ca2+, H+, Mg2+, NH4+, Cl-, NO3- and SO4-) and trace metals (Pb, Cd, Zn, Cu, Al, Fe, Mn, Mo, Ni, Sb and V). The majority of the rain samples Collected had pH values higher than 5.6. The average pH was 6.4+/-0.9. High values of pH were attributed to the neutralization by natural alkaline local dusts which contain large fractions of calcite. The annual average SO42--to-NO3- ratio is 1.8, which is close to that observed in more polluted regions. Concentrations of measured species were lower than those reported for other rural sites worldwide. Elements of anthropogenic origins (Zn, Pb, As, Sb, Ag and Cd) were highly enriched with respect to crustal composition. Factor analysis permitted the identification of four source groups, namely crustal dust, sea-salt spray, road traffic and combustion and secondary aerosol formation processes. (C) 2003 Elsevier Ltd. All rights reserved.