MAGNETISM OF ROAD DUST FROM SIX BULGARIAN CITIES AS A TOOL FOR ENVIRONMENTAL MONITORING OF URBAN POLLUTION

被引：0
作者：
Petrov, Petar [1 ]
Jordanova, Neli [1 ]
Jordanova, Diana [1 ]
机构：
[1] Natl Inst Geophys Geodesy & Geog BAS, Sofia, Bulgaria
来源：
12TH INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE, SGEM 2012, VOL. II | 2012年
关键词：
magnetism; road dust; monitoring; heavy metals; urban pollution; PARTICLES; METAL;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Magnetic properties of road dust collected from six Bulgarian cities were used as proxies for monitoring urban pollution during May 2009 - November 2010. Magnetic susceptibility shows maximum values during winter months, coherent with increased PM10 levels. In contrast, saturation remanent magnetization exhibits maxima in summer-autumn season and minima in winter. It is suggested that this magnetic parameter reflects traffic-related anthropogenic pollution. Heavy metal analyses show increased concentrations of Pb, Cu, Cr, Zn. Correlation analysis of the data set containing magnetic parameters and heavy metals content reveals existence of very strong negative correlation between the lead content and the ratio of anhysteretic remanence to magnetic susceptibility. It indicates that lead is reversely linked to fine grained magnetic fraction. The ratio of oxalate to dithionite extractible iron, which is related to the ferrimagnetic oxides capable of carrying anhysteretic remanence, is directly linked to Pb content as deduced by chemical extraction data.
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收藏
页码：601 / 608
页数：8
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