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Magnetic Properties of street dust from Chibi City,Hubei Province,China:Its Implications for Urban Environment

Journal of Earth Science 2009年第5期20卷 848-857页

作者：刘庆生曾庆理杨涛邱宁 Chan Lungsang Institute of Geophysics and Geomatics China University of Geosciences Institute of Geophysics China Earthquake Administration Department of Earth Sciences University of Hong Kong

Magnetic measurements and heavy metal analyses were performed on street dusts from the main urban area of Chibi（赤壁） City,Hubei（湖北） Province,*** revealed that a PSD/MD（pseudo-single-domain/multi-domain） magnetite-like phase dominates the magnetic phases of the street ***-related magnetic parameters,such as magnetic susceptibility（χ）,anhysteretic remanent magnetization（ARM）,and saturation isothermal remanent magnetization（SIRM） of samples increased in the main roads but appeared lower in the landscape area of the Lushui（陆水） Lake and closely correlated with the concentration of heavy metal Fe,Cu,and Co,and the correlation coefficients are 0.786 for Fe-χ,0.548 for Cu-χ,and 0.580 for Co-χ,***,much strong correlations between SIRM and the concentrations of heavy metal suggest that SIRM is a better indicator for heavy metal pollution in the street dust in the study *** magnetic particles in the street dust are mainly derived from anthropogenic activities,such as vehicle emissions,abrasion of tires,coal combustion,cement works,and building *** results make it possible to use magnetic techniques as simple,rapid,and nondestructive tools for assessing the heavy metal pollutions in urbanization process.

关键词： environmental magnetism street dust heavy metal Chibi City.

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Integration of chemical fractionation, Mosbauer spectrometry, and magnetic methods for identification of Fe phases bonding heavy metals in street dust

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Journal of Environmental Sciences 2023年第2期 875-891页

作者： Beata Gorka-Kostrubiec Ryszard Swietlik Tadeusz Szumiata Sylwia Dytłow Marzena Trojanowska Institute of Geophysics Polish Academy of Sciencesks.Janusza 6401-452 WarsawPoland Department of Environmental Chemistry and Engineering University of Technology and Humanities in Radom27 Bolesława Chrobrego Str.26-600 RadomPoland Department of Physics Faculty of Mechanical EngineeringUniversity of Technology and Humanities in Radom54 Krasickiego Str.26-600 RadomPoland

street dust is one of the most important carriers of heavy metals(HMs)originating from natural and anthropogenic *** main purpose of the work was to identify which of Fe-bearing phases bind HMs in street *** parameters of the Fe-bearing components,mainly magnetically strong iron oxides,are used to assess the level of HM *** sequential extraction combined with magnetic methods(magnetic susceptibility,magnetization,remanent magnetization)allowed determining the metal-bearing fractions and identifying the iron forms that aremostly associated with traffic-related *** use of Mossbauer spectrometry(MS)supplemented bymagnetic methods(thermomagnetic curves and psarameters of hysteresis loops)enabled precise identification and characterization of iron-containing *** classification of HMs into five chemical fractions differing in mobility and bioaccessibility revealed that iron is most abundant(over 95%)in the residual fraction followed by the reducible *** were present in reducible fraction in the following order:Pb>Zn>Mn>Cr>Ni>Fe>Cu,while they bound to the residual fraction in the following order:Fe>Ni>Cr>Mn>Pb>Cu>*** signature of the anthropogenic origin of street dust is the presence of strongly nonstoichiometric and defected grains of magnetite and their porous *** also occurs as an admixture with maghemite,and with a significant proportion of hematite.A distinctive feature of street dust is the presence of metallic iron and iron *** methods are efficient in the screening test to determine the level ofHMpollution,while MS helps to identify the iron-bearing minerals through the detection of iron.

关键词： Heavy metals street dust Chemical fractionation Magnetic methods Mossbauer spectrometry

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Characterization of Polycyclic Aromatic Hydrocarbons(PAHs) within street dust from a steel industrial city, Central China

Characterization of Polycyclic Aromatic Hydrocarbons(PAHs) w...

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第八届全国大气细及超细粒子技术研讨会暨PM_(2.5)...

作者： Jiaquan Zhang Changlin Zhan Ruizhen Yao Ting Liu Wensheng Xiao Jingru Zheng Hongxia Liu Junji Cao School of Environment Science and Engineering Hubei Polytechnic University Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation Key Laboratory of Aerosol Chemistry & Physics Institute of Earth Environment Chinese Academy of Sciences

Twenty-twostreet dustsamples collected from asmall steel city in central China,were analyzed for 16 USEPA priority PAHs to investigate the concentration,spatial distribution with black carbon(BC) and Fe,and to assess the source apportionment and the health risk of these *** concentrations of PAHs、BC and Fe was 4.43μg/g,12837.97mg/kg,70205.70 mg/kg,*** highest spot was around of the E’zhou Steel Plant and The Steel Rolling Mill of E’*** correlation analysis indicated that the PAHs concentrations were not significantly correlated to Fe,but significantly correlated to black carbon(BC),which might be caused by the continuous emission sources of iron and steel *** results of sources identification suggested that PAHs contaminations in street dust were a mixed source of coal/biomass ofindustrial production and vehicular traffic emission *** incremental lifetime and cancer risks(ILCRs) of exposing to PAHs in the street dust of the industrial city for the three age groups(namely childhood,adolescence,adulthood) fluctuated within the range of 10 to 10.

关键词： Polycyclic aromatic hydrocarbons(PAHs) street dust Industrial city Source apportionment Health risk assessment

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Improved source assessment of Si,Al and related mineral components to PM_(10) based on a daily sampling procedure

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Journal of Environmental Sciences 2010年第4期22卷 582-588页

作者： Ge Peng Hans Puxbaum Heidi Bauer Nicole Jankowski Yao Shi Chemical Engineering College Ningbo University of Technology Ningbo 315016 China. Institute for Chemical Technologies and Analytics Vienna University of Technology Vienna 1060 Austria College of Environmental and Resource Sciences Zhejiang University Hangzhou 310027 China

Samples obtained from an industrialized valley in the East Alpine region were collected daily for a half year and analyzed using X-ray fluorescence to examine the elements Si, Al, Fe, Ca, Mg, Na, K, Zn, P, S and Cl. Some factors affecting the changes of these elements were considered, including time, elemental correlations, weekday, weekend and seasonal changes. Diagnostic analysis provided an insight into a decoupling behavior that occursin siliceous and carbonates minerals. A decrease in Si and Al and an increase in carbonates, Na, K, Zn and P were observed during the cold season. However, a consistently high correlation of Si and Al was observed in all seasons. It was established that such high levels originated from street surface abrasion. The increase in variability and absolute levels of carbonates during the cold season was demonstrated by adding carbonates to the street surface as gritting material to increase the grip on snowy surfaces. A marked increase in Na and Cl was observed in winter which may have been caused by thaw salt that is widely used in winter in Austria. This was associated with a significant increase in K, Zn, and P in the cold season that was the result of domestic space heating with wood. PM10 levels in December were 12 μ/m^3 and were higher than levels detected in July. It was established that such high levels originated from mineral oxides, wood smoke, and inorganic ionic material（s）.

关键词： particulate matter PM10 mineral aerosol silicates carbonates street dust wood combustion thaw salt

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Discriminating sources of anthropogenic heavy metals in urban street dusts using magnetic and chemical methods

Discriminating sources of anthropogenic heavy metals in urba...

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中国科学院地质与地球物理研究所2012年度（第12届）...

作者： Chunxia Zhang Qingqing Qiao Erwin Appel Baochun Huang State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of Sciences

Discriminating between different sources of natural and anthropogenic pollution is a topic of scientific interest, but also important for sociopolitical and economic *** contribute to potential application of magnetic measurements for evaluating industrial pollution in urban environment from multi-anthropogenic sources,characteristics of street dust from a typical fast developing industrial city(Loudi,Hunan province, China) were studied by magnetic and non-magnetic(microscopic,chemical and statistical) *** magnetic spherules and iron from a Fe-smelting plant and traffic-related angular-shaped particles were *** metals originate from different anthropogenic activities;Fe,Co,and Mo from the Fe-smelting plant;Cu and Ni from vehicle traffic;Pb,Zn and Cd from both above anthropogenic sources;Cr,Ni and Be from other anthropogenic *** degree of heavy metal pollution in street dust is controlled by locations of anthropogenic activities and main wind *** correlation of the Tomlinson pollution load index of anthropogenic heavy metals with mass-specific magnetic susceptibility (χ) values is only moderate,our study demonstrates that magnetic proxies provide a rapid means for detecting and outlining regions with possible higher heavy metal contamination caused by multianthropogenic pollution sources in urban cities.

关键词： Environmental magnetism Heavy metals street dust Multi anthropogenic activities Hunan China

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