U. Blaha

University of Tübingen

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Erwin Appel

University of Tübingen

N. Basavaiah

Geological Survey of India

Pitambar Gautam

Hokkaido Museum

Wolfgang Rösler

Humboldt-Universität zu Berlin

Shouyun Hu

Nanjing Institute of Geography and Limnology

V. Hoffmann

University of Tübingen

Prasanta Kumar Das

Indian Institute of Technology Kharagpur

K. Deenadayalan

Geological Survey of India

Wolfgang Siebel

University of Freiburg

Helge Stanjek

RWTH Aachen University

Cooperative Institutions

University of Tübingen

Chinese Academy of Sciences

Bhabha Atomic Research Centre

Nanjing Institute of Geography and Limnology

Geological Survey of India

National Institute of Oceanography

Indian Institute of Tropical Meteorology

Ludwig-Maximilians-Universität München

Bayerisches Landesamt für Umwelt

Tribhuvan University

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Vertical susceptibility profiles : its use in magnetic pollution screening

U. Blaha

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Paddy soil — A suitable target for monitoring heavy metal pollution by magnetic proxies

Journal of Applied Geophysics (2011)

Huili Yan Shouyun Hu U. Blaha Wolfgang Rösler Xianggang Duan

Soil test

Paddy field

10.1016/j.jappgeo.2011.07.015

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Determination of anthropogenic boundary depth in industrially polluted soil and semi-quantification of heavy metal loads using magnetic susceptibility

Environmental Pollution (2008)

U. Blaha Erwin Appel Helge Stanjek

Soil test

Environmental Magnetism

10.1016/j.envpol.2008.02.013

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Integration of magnetism and heavy metal chemistry of soils to quantify the environmental pollution in Kathmandu, Nepal

Island Arc (2005)

Pitambar Gautam U. Blaha Erwin Appel

Abstract Soil profiles of the Kathmandu urban area exhibit significant variations in magnetic susceptibility (χ) and saturation isothermal remanence (SIRM), which can be used to discriminate environmental pollution. Magnetic susceptibility can be used to delineate soil intervals by depth into normal (< 10 −7 m 3 /kg), moderately enhanced (10 −7 –< 10 −6 m 3 /kg) and highly enhanced (≥ 10 −6 m 3 /kg). Soils far from roads and industrial sites commonly fall into the ‘normal’ category. Close to a road corridor, soils at depths of several centimeters have the highest χ, which remains high within the upper 20 cm interval, and decreases with depth through ‘moderately magnetic’ to ‘normal’ at approximately 30–40 cm. Soils in the upper parts of profiles in urban recreational parks have moderate χ. Soil SIRM has three components of distinct median acquisition fields (B 1/2 ): soft (30–50 mT, magnetite‐like phase), intermediate (120–180 mT, probably maghemite or soft coercivity hematite) and hard (550–600 mT, hematite). Close to the daylight surface, SIRM is dominated by a soft component, implying that urban pollution results in enrichment by a magnetite‐like phase. Atomic absorption spectrometry of soils from several profiles for heavy metals reveals remarkable variability (ratio of maximum to minimum contents) of Cu (16.3), Zn (14.8) and Pb (9.3). At Rani Pokhari, several metals are well correlated with χ, as shown by a linear relationship between the logarithmic values. At Ratna Park, however, both χ and SIRM show significant positive correlation with Zn, Pb and Cu, but poor and even negative correlation with Fe (Mn), Cr, Ni and Co. Such differences result from a variety of geogenic, pedogenic, biogenic and man‐made factors, which vary in time and space. Nevertheless, for soil profiles affected by pollution (basically traffic‐related), χ exhibits a significant linear relationship with a pollution index based on the contents of some urban elements (Cu, Pb, Zn), and therefore it serves as an effective parameter for quantifying the urban pollution.

Environmental Magnetism

10.1111/j.1440-1738.2005.00496.x

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Citations (31)

Evaluation of environmental magnetic pollution screening in soils of basaltic origin: results from Nashik Thermal Power Station, Maharashtra, India

Environmental Science and Pollution Research (2012)

N. Basavaiah U. Blaha P.K. Das K. Deenadayalan M. B. Sadashiv

Thermomagnetic convection

Environmental Magnetism

Topsoil

Ferrimagnetism

Magnetic mineralogy

10.1007/s11356-012-0816-1

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Citations (22)

Change of magnetic properties due to fluctuations of hydrocarbon contaminated groundwater in unconsolidated sediments

Environmental Pollution (2009)

Moti Lal Rijal Erwin Appel Eduard Petrovský U. Blaha

Environmental Magnetism

Groundwater Remediation

Superparamagnetism

Hydrocarbon exploration

10.1016/j.envpol.2009.11.012

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Citations (58)

Discrimination of Urban and Industrial Pollution Sources by Integrated Assessment of Magnetic Parameters from Road Dust Samples in the Basaltic Environment of the Mega-City of Mumbai, India

EGU General Assembly Conference Abstracts (2013)

U. Blaha N. Basavaiah Prasanta Kumar Das

Megacity

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Geochronology and geochemistry of a dyke?host rock association and implications for the formation of the Bavarian Pfahl shear zone, Bohemian Massif

International Journal of Earth Sciences (2004)

Wolfgang Siebel U. Blaha Fukun Chen Johann Rohrm�ller

Massif

Geochronology

10.1007/s00531-004-0445-0

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Magnetic survey of soil pollution around meishan steel mill in Nanjing, China

Haitao Yan Shouyun Hu U. Blaha Wolfgang Rösler Erwin Appel

High resolution magnetic survey around Meishan steel mill in Nanjing (SE China) was carried out after a preliminary magnetic study which proved that paddy soil could be a suitable target for environmental study on heavy metal pollution. Magnetic susceptibilities were measured on the surface and along down holes at 100 soil sites around Meishan steel mill. In vertical profiles, geochemical and magnetic results show an obvious boundary at a depth of 20cm or so (plough pan). It means there is no transmission of heavy metals below plough pan. The low susceptibility blow plough pan can be taken as background, and the high susceptibility in the upper part can be thought as an average polluted signal. Surface measurement of magnetic susceptibility at paddy field around the steel mill shows a decreasing trend with the increasing distance from the main emission zone of steel mill. With the help of geochemistry, correlation between zinc content and magnetic susceptibility of top soil is proved to be significant. It indicates paddy soil can be used as an effective object to map heavy metal pollution. To some extent, our research expands the magnetic object for heavy metal pollution, and makes it possible to carry out a large scale magnetic scanning for heavy metal pollution in China, since undisturbed soil with low magnetic background is not easy to find.

Plough

Research Object

10.1109/csss.2011.5974875

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Micro-scale grain-size analysis and magnetic properties of coal-fired power plant fly ash and its relevance for environmental magnetic pollution studies

Atmospheric Environment (2008)

U. Blaha B. Sapkota Erwin Appel Helge Stanjek Wolfgang Rösler

Magnetic separation

10.1016/j.atmosenv.2008.07.051

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Citations (101)