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Lead, cadmium, zinc, manganese, chromium, cobalt, copper, and molybdenum concentrations were measured in 50 samples of placenta tissues. The samples came from Tychy in the Upper Silesian Industrial District (Poland), where the population is exposed to enormously increased levels of heavy metals. GFAAS technique was used. Various methods of ashing samples were examined. Wet ashing under pressure in...
Using atomic absorption spectroscopy, Cu, Zn, Fe, Mn, V, Pb, and Cd levels have been determined in kidneys and livers of cows and sheep from the Suwałki region. It has been found that there are differences in the arrangment of V, Cu and Fe in the examined tissues. Pb and Cd concentrations provide evidence that exposure of the examined animals to these metals is low in this region. They approximate...
The concentrations of lead, cadmium, zinc, cuprum and chrominum in human milk were determined using GF AAS. The samples originated from women living in the Upper Silesian Industrial District (Poland). The mean concentration of lead was about 50 ng/g, cadmium 16 ng/g, zinc 50 μg/g, chromium 45.5 ng/g, and copper 1.1 μg/g. The mineralization of the samples was carried out both by means of concentrated...
Comparative tests on the sensitivity of actinomycetes to cadmium and copper ions were carried out on 19 wild strains of the genus Streptomyces. The strains were tested by placing solutions of cadmium chloride on filter paper disks in quantities of 20 and 40 μg Cd2+, and also 20, 40 and 80 μg Cu2+ converted to metal. Both conidial and vegetative forms of actinomycetes were used as inoculum. Differentiation...
This paper presents studies on the effects of manganese, barium, zinc, aluminium and copper ions on the rate of biological sulfates reduction by Desulfotomaculum ruminis bacteria. We determinated the concentrations of these ions which totally inhibited the process. The anions we studied can be arranged according to increasing poisonous properties: Mn2+
Concentrations of lead, cadmium, copper and zinc in Lowland and Merino wool fibres were determined using differential pulse voltammetry, and iron concentration was measured by means of the spectrophotometric method. A differentiation in the concentration of the above elements in the same staple was Pb: 13.5-29.31 [mg/kg]; Cd: 0.95-4.59 [mg/kg]; Zn: 57.21-91.34 [mg/kg]; Cu: 2.79-5.91 [mg/kg]; Fe: 58...
Concentrations of lead, cadmium, copper and zinc in soil near public main roads in the city of Poznań were determined using AAS by microsampling techniques. Mineralization of the soil samples was carried out in concentrated mineral nitric acids and hydrogen peroxide Ander normal pressure for 12 hours.
The effects of Cu on the production of hydroxamate siderophores, microbial activity and physiological state of bacteria in a sandy-loam soil were studied. Soil samples were treated with either 0.5 or 2.5 mg Cu (as chloride) g-1 or were left untreated. Soil microflora responded to added Cu by changing the physiological state and production of specific metabolites, i.e. siderophores; however, microbial...
A procedure for determining the chemical forms of zinc, cadmium, lead and copper in surface and ground waters located in Agricultural Landscape Park (ALP) is outlined. Heavy metals were differentiated into ionic, labile forms and moreover on stable complexes and chelates. In the studied waters, concentrations of ionic forms were 17.9-45.2 μgZn/l, 0.003-0.038 μgCd/l, 0.28-6.29 μgPb/I. Labile complexes...
The seeds of Albizia lebbeck, Leucaena leucocephala and Peltophorum pterocarpum show a high rate of germination in the soil extract of control (campus) as compared to polluted areas (city). Germination percentage was lowest in the soil extracts of Guruminder and M. A. Jinnah road. The seedling length of A. Lebbeck and P. pterocarpum was not significantly altered by the soil extract of city areas,...
The use of Thiobacillus ferrooxidans bacteria in the process of copper and iron leaching from chalcopyrite coming from Kotlina Klodzka was investigated. The influence of the mineral content in the leaching solution the pH value and refinement of chalcopyrite on the subsequent stages of leaching was established. The process was described by the 1st order reaction inhibited by one of the products (Cu2+)...
The objective of this study was to assess the relationship between lead, cadmium, zinc, and copper contents in the children's head hair and the level of environmental exposure in the subject's place of residence. The studied population was a group of 93 children (62 boys and 31 girls), aged 5-16, living in contaminated regions of the Copper Basin Legnica ("Exposed Group"). The control ("Reference...
The aim of this paper is to present the chemical behaviour of cuprum (II) and mercury (II) in chelate complexes with L-ascorbic acid in alkaline solution. The results were interpreted by the spectroscopy method. Composition and total stability constants of the complexes were determined by Jacymirski method. In solution in with pH =9, H2 Asc forms complexes of the type [Me(Asc)2]-2; Me:L = 1:2. The...
Liver and kidneys collected in 1998 from cattle bred in the region of Varmia and Mazuria were analysed for the levels of cadmium, as well as copper and zinc. The mean concentration of cadmium younger animals (<2 years) was 0.425 mg/kg in kidneys, and 0.159 mg/kg in liver, being much lower than the levels found in older (>2 years) cattle. Notwithstanding this, cadmium levels were not high enough...
The present paper studies the content of heavy metals: Fe, Mn, Zn, Cu, Pb, Ni and Cd in the foliage of an indicator plant - dandelion - as collected from the lawns and parks of the Warsaw metroplitan area. The results suggest heavy accumulation of Fe, Zn, Pb and Cd as a consequence of the impact of traffic-born pollution.
This paper studies the recovery and concentration of Zn2+ and Cu2+ metal ions from industrial rinse water containing a mixture of Zn2+, Cu2+, Ca2+, Mg2+, K+, and Na+ salts. Transport and separation experiments were performed in a continuous membrane extraction (CME) system, i.e. in the membrane system composed of two contactors with a cation-exchange polymer membrane (Neosepta CMX) and an organic...
This paper presents results of a study on determination of the concentration of Cd, Pb, Cu and Zn in neoplastic and peri-neoplastic lung tissues from 110 subjects of two regions of different degrees of environmental pollution: Wielkopolska (75) and Upper Silesian Industrial District (35). The concentrations of the metals were determined by the method of differential pulse anodic stripping voltammetry...
In the years 1995 and 1996 a study was conducted to investigate the heavy metal contamination of soil and crops (flax and oil-seed rape) in the vicinity of the "Glogow Copper Smelter" in Poland. The concentration of copper, as the main soil pollutant, ranges from background amounts to levels higher than admissible limits. The patterns of copper spatial distribution observed in the vicinity...
In the presented study, the concentrations of some heavy metal ions in bottom sediment samples collected from streams around Yozgat-Turkey in December 1998 and October 1999 were determined by flame atomic absorption spectrometry (FAAS) after leaching with aqua regia. Copper, iron, nickel, cobalt, lead, manganese and chromium levels in the sediment samples were found in the range of 10.4-16.7 µg/g,...
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