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Magnetic properties and heavy metal contents of automobile emission particulates
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LU Sheng-gao, BAI Shi-qiang, CAI Jing-bo, XU Chuang. Magnetic properties and heavy metal contents of automobile emission particulates[J]. Journal of Zhejiang University Science B, 2005, 6(8): 731-735.
@article{title="Magnetic properties and heavy metal contents of automobile emission particulates",
author="LU Sheng-gao, BAI Shi-qiang, CAI Jing-bo, XU Chuang",
journal="Journal of Zhejiang University Science B",
volume="6",
number="8",
pages="731-735",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.B0731"
}
%0 Journal Article
%T Magnetic properties and heavy metal contents of automobile emission particulates
%A LU Sheng-gao
%A BAI Shi-qiang
%A CAI Jing-bo
%A XU Chuang
%J Journal of Zhejiang University SCIENCE B
%V 6
%N 8
%P 731-735
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.B0731
TY - JOUR
T1 - Magnetic properties and heavy metal contents of automobile emission particulates
A1 - LU Sheng-gao
A1 - BAI Shi-qiang
A1 - CAI Jing-bo
A1 - XU Chuang
J0 - Journal of Zhejiang University Science B
VL - 6
IS - 8
SP - 731
EP - 735
%@ 1673-1581
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.B0731
Abstract: Measurements of the magnetic properties and total contents of Cu, Cd, Pb and Fe in 30 automobile emission particulate samples indicated the presence of magnetic particles in them. The values of frequency dependent susceptibility (χfd) showed the absence of superparamagnetic (SP) grains in the samples. The IRM20 mT (isothermal remanent magnetization at 20 mT) being linearly proportional to SIRM (saturation isothermal remanent magnetization) (R2=0.901), suggested that ferrimagnetic minerals were responsible for the magnetic properties of automobile emission particulates. The average contents of Cu, Cd, Pb and Fe in automobile emission particulates were 95.83, 22.14, 30.58 and 34727.31 mg/kg, respectively. Significant positive correlations exist between the magnetic parameters and the contents of Pb, Cu and Fe. The magnetic parameters of automobile emission particulates reflecting concentration of magnetic particles increased linearly with increase of Pb and Cu content, showed that the magnetic measurement could be used as a preliminary index for detection of Pb and Cu pollution.
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