نتایج جستجو برای: anthropogenic pollution

تعداد نتایج: 91827  

Journal: :The Science of the total environment 2011
Florian Thevenon Neil D Graham Massimo Chiaradia Philippe Arpagaus Walter Wildi John Poté

This research first focuses on the spatial and temporal patterns of heavy metals from contrasting environments (highly polluted to deepwater sites) of Lake Geneva. The mercury (Hg) and lead (Pb) records from two deepwater sites show that the heavy metal variations before the industrial period are primarily linked to natural weathering input of trace elements. By opposition, the discharge of ind...

2013
Hafizan Juahir Munirah Abdul Zali Ananthy Retnam

Juru River is named as one of polluted river in Malaysia by Department of Environment (DOE) Malaysia up till recent times. The pollution loadings of this river basin come from various point and non-point sources. This study reveals that the water quality of Juru River is very much affected by the industrial activities in this locality area. The principle component analysis (PCA) display that th...

2011
L. M. Zamora J. M. Prospero D. A. Hansell

[1] The deposition of anthropogenic nitrogen (N) species is believed to have a significant impact on the oligotrophic North Atlantic, but the magnitude of ecological effects remains uncertain because the deposition of water soluble organic N (WSON) is poorly quantified. Here we present measurements of water soluble inorganic N (WSIN) and WSON in aerosol and rain at two subtropical North Atlanti...

Journal: :Comparative biochemistry and physiology. Toxicology & pharmacology : CBP 2010
C Tsangaris K Kormas E Strogyloudi I Hatzianestis C Neofitou B Andral F Galgani

A suite of biomarkers was measured in caged mussels at areas impacted by different anthropogenic activities along the Greek coastline to assess biological effects of environmental pollution. Mussels were caged at coastal sites in the vicinity of major cities, in areas influenced by major industries, agricultural practices and in islands away from known sources of pollution. Biomarkers indicativ...

2015
Guadalupe Monge Francisco J. Jimenez-Espejo Antonio García-Alix Francisca Martínez-Ruiz Nadine Mattielli Clive Finlayson Naohiko Ohkouchi Miguel Cortés Sánchez Jose María Bermúdez de Castro Ruth Blasco Jordi Rosell José Carrión Joaquín Rodríguez-Vidal Geraldine Finlayson

Homo species were exposed to a new biogeochemical environment when they began to occupy caves. Here we report the first evidence of palaeopollution through geochemical analyses of heavy metals in four renowned archaeological caves of the Iberian Peninsula spanning the last million years of human evolution. Heavy metal contents reached high values due to natural (guano deposition) and anthropoge...

Journal: :The Science of the total environment 2009
Neal Michelutti Antonio Simonetti Jason P Briner Svend Funder Robert A Creaser Alexander P Wolfe

Concentrations and stable isotope ratios of lead (Pb) from lake sediments were used to quantify temporal patterns of anthropogenic Pb pollution in the Clyde River region of Baffin Island, Arctic Canada. Surface sediments from eight lakes on eastern Baffin Island and one from northern-most Greenland, spanning a gradient of 20 degrees latitude, showed great variability with respect to Pb concentr...

2015
R. Krishna J. Iqbal A. K. Gorai G. Pathak F. Tuluri P. B. Tchounwou

Groundwater pollution due to anthropogenic activities is one of the major environmental problems in urban and industrial areas. The present study demonstrates the integrated approach with GIS and DRASTIC model to derive a groundwater vulnerability to pollution map. The model considers the seven hydrogeological factors [Depth to water table (D), net recharge (R), aquifer media (A), soil media (S...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Jintai Lin Da Pan Steven J Davis Qiang Zhang Kebin He Can Wang David G Streets Donald J Wuebbles Dabo Guan

China is the world's largest emitter of anthropogenic air pollutants, and measurable amounts of Chinese pollution are transported via the atmosphere to other countries, including the United States. However, a large fraction of Chinese emissions is due to manufacture of goods for foreign consumption. Here, we analyze the impacts of trade-related Chinese air pollutant emissions on the global atmo...

Journal: :environmental resources research 0
y barkouch laboratoire de toxicologie et d’hygiène industrielle, 1 rue gaston veil, 44035, nantes cedex, france , laboratoire régional du diagnostic épidémiologique et d’hygiène du milieu –marrakech – maroc. a pineau laboratoire régional du diagnostic épidémiologique et d’hygiène du milieu –marrakech maroc

the present study represents a first insight into the draa lasfar min (marrakech - morocco) to assess the degree of polymetallic pollution caused by anthropogenic activities (like mine extraction) and consequently the possible diffusion of heavy metals and to predict the risk of their mobility in the surroundings of the mine area. the edaphologic parameters ph and electrical conductivity (ec) w...

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