Metal levels in indoor and outdoor dust in Riyadh, Saudi Arabia
Metal levels in indoor and outdoor dust in Riyadh, Saudi Arabia
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DOI：
10.1016/0160-4120(96)00017-7
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发表时间：
1996-01-01
影响因子：
11.8
通讯作者：
AlAamer, AS
中科院分区：
文献类型：
--
作者：
AlRajhi, MA;Seaward, MRD;AlAamer, AS
采用原子吸收光谱法（AAS）研究了沙特阿拉伯利雅得室外和室内灰尘中Cd、Cr、Cu、Li、Ni、Pb和Zn的浓度与0.04-0.08 mm粒径的关系。虽然结果显示，总体上污染相对较低，但旧工业区的有毒金属含量相当高，高速公路附近的铅含量也相对较高。室外灰尘中Cd、Cr、Cu、Li、Ni、Pb和Zn的平均浓度分别为2.5 +/- 0.3、35.1 +/- 2.7、93.9 +/- 41.9、4.6 +/- 0.3、43.9 +/- 5.6、1762 +/- 593和443 +/- 223 μ g.g（-1），室内灰尘的平均浓度分别为2.0 +/- 1.1、69.2 +/- 16.5、271 +/- 140、6.2 +/- 0.5、52.9 +/- 17.7、639 +/- 279和547 +/- 197 μ g.g（-1）。这些重金属的主要来源，在室外和室内灰尘，是从汽车排放。研究了室外和室内粉尘之间的关系。鉴于其中一些有毒金属的含量很高，可将其视为一个重要的接触源，尤其是对儿童而言。
Concentrations of Cd, Cr, Cu, Li, Ni, Pb, and Zn of outdoor and indoor dusts in Riyadh, Saudi Arabia, have been investigated in relation to particle sizes 0.04-0.08 mm using Atomic Absorption Spectroscopy (AAS). Although the results showed relatively low contamination in general, the old industrial area had appreciably high levels of toxic metals and there were relatively high Pb levels near motorways. Mean concentrations of outdoor dusts for Cd, Cr, Cu, Li, Ni, Pb, and Zn were 2.5 +/- 0.3, 35.1 +/- 2.7, 93.9 +/- 41.9, 4.6 +/- 0.3, 43.9 +/- 5.6, 1762 +/- 593, and 443 +/- 223 mu g.g(-1), respectively, and mean concentrations of indoor dusts were 2.0 +/- 1.1, 69.2 +/- 16.5, 271 +/- 140, 6.2 +/- 0.5, 52.9 +/- 17.7, 639 +/- 279, and 547 +/- 197 mu g.g(-1), respectively. The main source of these heavy metals, in both outdoor and indoor dusts, was from automobile emissions. The relationship between outdoor and indoor dusts was investigated. In view of the high levels of some of these toxic metals, these can be considered a significant hand-to-mouth source of exposure, especially for children.