Results 271 to 280 of about 43,697 (308)

Acid and heavy metal pollution by wet deposition

Science of The Total Environment, 1986
Abstract Wet deposition of acid and of ecotoxic heavy metals Cd, Pb, Cu and Zn by rain and snow in the F.R.G. was followed during the semidecade 1980 – 84 to establish the long term trends and to study regional and local situations. The free acid in rain and snow is rather uniformly distributed over the whole area as a result of mesoscalic transport ...
P. Valenta, V.D. Nguyen, H.W. Nornberg
openaire   +1 more source

Monitoring of heavy metal deposition in Northern Italy by moss analysis

Environmental Pollution, 2000
A survey of heavy metal deposition in the mountainous territories of Northern Italy was carried out in 1995-96. Moss samples (mainly Hylocomium splendens) were collected in a dense network of sites (about 3.2 sites/1000 km(2)) and the data of metal concentrations in moss tissues were statistically correlated with environmental and climatic factors, as ...
R Marchesini, M Franchi, S Giaquinta
exaly   +4 more sources

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
openaire   +1 more source

Deposition of sulfate and heavy metals on the Kola Peninsula

Science of The Total Environment, 1995
Snowpack samples were collected at 20 sites on the Kola Peninsula, Russia, in April 1991. Samples were collected both in remote regions and in areas impacted by nearby emission sources, including the Severonikel CuNi smelter in the city of Monchegorsk.
Dan Jaffe, Bianca Cerundolo, Janet Rickers, Richard Stolzberg, Alexander Baklanov   +4 more
openaire   +1 more source

Dry deposition characteristics of heavy metals in Europe

Toxicological & Environmental Chemistry, 2001
Dry atmospheric deposition of heavy metals Cd, Cu, Cr, Mn, Ni, Pb and Zn have been analysed at different sites in Europe to identify seasonal variations and statistical characteristics in the period 1995–1996. Clear seasonal variations of Cd, Mn, Pb and Zn levels between winter and summer were observed.
N. Lavín, E. Marín
openaire   +1 more source

Heavy metals in atmospheric surrogate dry deposition

Chemosphere, 1999
This paper describes a methodological approach for the assessment of the amount of surrogate dry deposition of several toxic heavy metals (Cd, Cr, Cu, Ni, Pb, V, Zn) associated with atmospheric particulate matter at ground level. The objectives of the study were twofold: i) the evaluation of several techniques for the digestion of dry deposition ...
, Morselli, , Cecchini, , Grandi, , Iannuccilli, , Barilli, , Olivieri   +5 more
openaire   +2 more sources

Modelling the Concentration and Deposition of Heavy Metals in the UK

2014
A relatively simple Lagrangian atmospheric transport model (FRAME) was adapted to simulate the concentration and deposition of nine heavy metals (As, Cd, Cr, Cu, Pb, Ni, Se, V and Zn) in the UK. The modelled data was compared with annually averaged measured wet deposition of metals and concentrations in air.
Anthony Dore, Stephen Hallsworth, Małgorzata Werner, Maciej Kryza, Eiko Nemitz, Heath Malcolm, Stefan Reis, David Fowler   +7 more
openaire   +1 more source

A Technique for Determining the Deposition of Heavy Metals in Pesticides

Phytopathology, 1985
Description d'une technique rapide basee sur le dosage des depots de metaux lourds par analyse minerale dans le but de mesurer les depots de pesticides et d'elements mineraux (oligoelements) sur les feuilles de ...
openaire   +1 more source

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
openaire   +2 more sources

Deposition of Heavy Metals and Their Distribution on Needles and Bark

1988
Three compartments of a tree: the surface layer on leaves or needles, the inner part of them, and the corresponding segments of the bark were investigated for the contents of some elements by XRFA (S, K, Ca, Ti, Mn, Fe, Ni, Cu, Zn, Br, Sr, Rb, Pb) and by INAA (Fe, Zn, Cr, Sb, Se, Co).
V. Cercasov, I. Rentschler, H. Schreiber
openaire   +1 more source