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Heavy metal concentrations in consecutive saturation extracts of dredged sediment derived surface soils
1998
Tack, F.M.G. | Singh, S.P. | Verloo, M.G. (Laboratory for Analytical Chemistry and Applied Ecochemistry, University of Ghent, Coupure Links 653, B-9000 Gent (Belgium))
Competitive sorption of heavy metal by soils. Isotherms and fractional factorial experiments
1998
Echeverria, J.C. | Morera, M.T. | Mazkiaran, C. | Garrido, J.J. (Universidad Publica de Navarra, Departamento de Quimica Aplicada, Campus Arrosadia, 31006 Pamplona (Spain))
Removal of trace metals from contaminated soils using EDTA incorporating resin trapping techniques
1998
Tejowulan, R.S. | Hendershot, W.H. (Department of Soil Science, University of Mantaram, Jin. Pendidikan No. 56, Mantaram, NTB (Indonesia))
Chemistry of soil solutions under different kinds of vegetation in the vicinity of a thermal power station
1998
Fernandez-Sanjurjo, M.J. | Alvarez, E. | Vega, V.F. | Garcia-Rodeja, E. (Departamento de Edafologia y Quimica Agricola, Facultad de Biologia, Universidad de Santiago de Compostela, E-15706 Santiago de Compostela (Spain))
Release of metals from homogeneous soil columns by wastewater from an agricultural industry
1998
Madrid, L. | Diaz-Barrientos, E. (Instituto de Recursos Naturales y Agrobiologia de Sevilla (CSIC), Apartado 1052, E-41080 Sevilla (Spain))
The adaptation of Silene vulgaris to growth on a calamine waste heap (S. Poland)
1998
Wierzbicka, M. | Panufnik, D. (Environmental Plant Pollution Laboratory, Department of Morphogenesis, Institute of Plant Experimental Biology, University of Warsaw, Krakowskie Przedmiescie 26/28, 00-927 Warsaw (Poland))
Trace elements in striped dolphins (Stenella coeruleoalba) from the western Mediterranean
1998
Monaci, F. | Borrel, A. | Leonzio, C. | Marsili, L. | Calzada, N. (Dipartimento di Biologia Ambientale, Universita degli Studi di Siena, via delle Cerchia 3, 53100 Siena (Italy))
Comparison of selected element concentrations in tall and short forms of Spartina alterniflora
1998
Ornes, W.H. | Sajwan, K.S. | Loganathan, B.G. | Chetty, C.S. (Department of Biology and Geology, University of South Carolina, Aiken, SC 29801 (USA))
Assessment of Atmospheric Heavy Metals by Moss Monitoring with Isothecium Stoloniferum Brid. in the Fraser Valley, B.C., Canada
1998
Pott, Ute | Turpin, David H.
The atmospheric heavy metal pollution of the Fraser Valley, B.C., Canada was assessed in 1993 by analyzing 62 samples of the common woodland moss Isothecium stoloniferum for lead, cadmium, nickel, zinc, chromium, and manganese. The latter two metals did not show a distinct regional distribution, but lead, cadmium, nickel, and zinc showed distinct pattern along a west-east gradient. High values were found in the metropolitan Vancouver area, located in the west of the study region. Significantly lower values were recorded for mosses from the eastern more rural areas of the Fraser Valley. Metal pollutants are likely to be contained close to their emission sources by alternating south-east, north-west winds. Highest values overall were found in the North Shore Mountains, adjacent to Vancouver. This was related to higher precipitation and short range pollutant transport from the industrialized, heavily populated areas in the floodplain of the Fraser River.
显示更多 [+] 显示较少 [-]Influence of pH and Zinc Concentration on Cadmium Sorption in Acid, Sandy Soils
1998
Wilkins, B. J. | Brummel, N. | Loch, J. P. G.
Batch adsorption experiments were carried out with samples from an A-, Bh- and C-horizon of contaminated sandy soil of podzolic character from the Kempen region at the Dutch-Belgian border. Cadmium sorption was studied on 3 soil samples at 3 different pH-levels (3.6, 4.3 and soil buffered pH) and 3 different additions of zinc (0–40 mg l⁻¹).Adsorption of cadmium by acid sandy soils can be fitted by a Freundlich adsorption isotherm. Although zinc competes with cadmium for the sorption sites, we observe a two to three times stronger competition effect of the proton cation, which is explained by the chemical properties of both ions. The cadmium adsorption coefficient KF decreases considerably by an increase of the proton activity used in the sorption experiments. Organic matter content explains for a large part the variation of KF of te three soil samples. Desorption data do not fit the proposed regression model for adssorption. Not all the cadmium, intitially present in the polluted soil, will fylly desorb reversibly. Thus, part of the cadmium may be irreversible bound.
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