Results 271 to 280 of about 195,996 (311)

Atmospheric deposition of heavy metals in central Ontario

Water, Air, and Soil Pollution, 1981
As part of a study to determine the magnitude of atmospheric inputs of materials into the lakes of central Ontario, a four-station network of bulk deposition and wet-only precipitation samplers was established in the Muskoka-Haliburton and Sudbury regions to determine the deposition (mg m2− yr−1) and volume weighted concentration (μg 1−1) of Ph, Cu, Ni,
Dean S. Jeffries, Warren R. Snyder
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Atmospheric heavy metal deposition in the Copenhagen area

Environmental Pollution (1970), 1978
Abstract Atmospheric dry and wet deposition (bulk precipitation) of the heavy metals Cu, Pb, Zn, Ni, V and Fe over the Copenhagen area was measured by sampling in plastic funnels from 17 stations during a twelve-month period. Epigeic bryophytes from 100 stations in the area were analysed for the heavy metals Cu, Pb, Cd, Zn, Ni, V, Cr and Fe.
Andersen, Allan, Hovmand, Mads Frederik, Johnsen, Ib   +2 more
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Heavy metals in a municipal solid waste deposition cell

Waste Management & Research: The Journal for a Sustainable Circular Economy, 1998
The physical and chemical changes of a waste mixture consist ing of mumcipal solid waste (MSW) and sewage sludge were investigated during the anaerobic waste stablilization phases of the mixture. The emphasis of this study was the behavior of heavy metals. The waste was deposited in a test cell in 1973.
P. Flyhammar, F. Tamaddon, L. Bengtsson
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Heavy Metals in Littoral Deposits Off Havana City, Cuba

Chemistry and Ecology, 1991
Abstract The content of Al, Cd, Co, Cu, Fe, Hg, Mn, Ni, Pb, Zn, C org and organic matter was investigated in sediment samples taken in the littoral zone off Havana City. the results revealed three areas affected by contamination: (a) Chivo Beach with a submarine sewage outfall, (b) the mouth of the Havana Bay and (c) the estuarine area of the ...
Humberto González, Lutz Brügmann
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Distribution of Heavy Metals in Lake Seliger Bottom Deposits

Water Resources, 2004
The distribution of some microelements in the surface and stratified layers of bottom sediments in Lake Seliger is studied. Data on the bottom deposit pollution by heavy metals is used to determine the anthropogenic load on the lake ecosystem. Cd, Zn, and Pb are shown to rapidly accumulate in thick (>1 m) bottom deposits that have formed during the ...
V. I. Kosov, I. V. Kosova, V. V. Levinskii, G. N. Ivanov, A. I. Khil'chenko   +4 more
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Equipment for heavy-metal deposition and salt dewatering

Metallurgist, 2007
The composition of waste water and the requirements established for the methods used to purify it serve as the starting point in any design of water treatment facilities. As an example, the author proposes the use of a unit whose stationary drum is supplied with pre-dried sediment.
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Effects of heavy metal deposition on soil fertility

2000
Bulk deposition was collected in the vicinity of the Harjavalta smelter from 1993 to 1996 in open areas close to the Scots pine study stands using 5 rainfall collectors (O = 20 cm) during the snowfree period or 2 snow collectors (O = 36 cm) during the winter. Stand throughfall was collected using 20 rainfall collectors located systematically on the 30 ×
John Derome, Tiina Nieminen, Antti-Jussi Lindroos   +2 more
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Deposition of heavy metals in a Mediterranean climate area

Atmospheric Research, 2006
Abstract Deposition samples were collected and analyzed for selected heavy metals in Izmir, Turkey on different days in October 2003–June 2004. A water surface sampler was used to collect dry deposition and rainwater samples to represent the wet deposition during the rainy period of the year.
Cizmecioglu, Sibel Cukurluoglu, Muezzinoglu, Aysen   +1 more
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Economic Potential of the Red Sea Heavy Metal Deposits

1969
Average assays of metals in Atlantis II Deep deposits are: Fe, 29 per cent; Zn, 3.4 per cent; Cu, 1.3 per cent; Pb, 0.1 per cent; Ag, 54ppm; Au, (probably) 0.5ppm. The deposits contained from 55 to 96 per cent interstitial brine, averaging about 85 per cent. Total brine-free sediment in the upper 10m of sediment is estimated to be over 50 million tons.
J. L. Bischoff, F. T. Manheim
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Heavy metal determinations in outdoor atmospheric dust depositions

2020
Information on atmospheric dust deposition is important for various types of research, including urban runoff and air quality modelling, ecosystem nutrient cycling and epidemiological studies. This paper presents heavy metal profiles of outdoor dustfalls collected in buckets from six sites located in Adapazan, Turkey.
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