Adsorption of heavy metal inons on soils and soil constituents
Adsorption of heavy metal inons on soils and soil constituents
... of heavy metal ions on soils and soil con- stituents is influenced by a variety of parameters, the most important ones being pH, type and speciation of metal ion involved, heavy metal competition, ... 2004 Available online 24 April 2004 Abstract The article focuses on adsorption of heavy metal ions on soils and soils constituents such as clay miner...
Ngày tải lên: 15/03/2014, 23:09
Tài liệu Báo cáo " Study on reuse of heavy metal rich sludge in ceramic pigment and construction material production " docx
... laboratory of Construction material, Hanoi University of Construction. The environmental safety of sludge re-usage was assessed based on heavy metals leaching after 2, 14 and 21 days of soaking ... laboratory of Environmental analysis, faculty of Environmental Sciences and department of Environmental analysis, Institute of Environmental Technology. Heavy meta...
Ngày tải lên: 12/02/2014, 17:20
Heavy metal contamination in soils of urban highways (comparision between runoff and soil concentration
... could lead to elevated metal contents in water supplies. HEAVY METAL CONTAMINATION IN SOILS OF URBAN HIGHWAYS 313 5. Conclusions Heavy metal contamination in soils taken from along I-75, Cincinnati, ... removal of Pb by three HEAVY METAL CONTAMINATION IN SOILS OF URBAN HIGHWAYS: COMPARISON BETWEEN RUNOFF AND SOIL CONCENTRATIONS AT CINCINNATI, OHIO DILEK TURER 1 ,...
Ngày tải lên: 16/03/2014, 00:25
A meta analysis and risk assessment of heavy metal uptake in common garden vegestable
... 1997). Heavy metals tend to accumulate in the clay fraction of most soil profiles (Boon et al. 1992; Lee et al. 1997). Boon et al. (1992) concluded that the concentration of heavy metals in soil ... the soil profile (Khan and Frankland 1983). Immobilization can increase the Cd concentration of the soil and ultimately lead to the increased toxicity of the contaminate...
Ngày tải lên: 15/03/2014, 23:10
Chelant extraction of heavy metal fromcontaminated soils
... radionuclides and heavy metals from soils using chelant extraction and REDOX manipulation techniques. Previous studies involving chelant and acid extraction for removal of heavy metals from soils ... can influence the soil s retention of metals by adsorption and complexation with metal ions Ž and complexes to different degrees depending on the pH pH of the zero...
Ngày tải lên: 15/03/2014, 23:22
Sincerity and the end of theodicy - three remarks on Levinas and Kant
... for judgement, decision and action. If it is part of Levinas’s project to address the question of the application of these descriptions, that question and that application cannot by them- selves ... justifi- cation of the a priori foundations of knowledge. The descriptions of the schematism are required in order to unpackand expose the conditions of possibility that have alw...
Ngày tải lên: 01/11/2013, 10:20
Tài liệu Báo cáo khoa học: Effect of siRNA terminal mismatches on TRBP and Dicer binding and silencing efficacy pdf
... impact of silencing TRBP and Dicer on the function of the fully paired and mismatched sequences, we wished to examine Fig. 1. Effect of guide strand 5¢ end mismatch on silencing efficacy of siRNAs. ... mRNA or a non-targeting (NT) siRNA at a final concentration of 10 n M. Fluorescence was measured 24 h after transfection. The mean and standard deviation are shown for each co...
Ngày tải lên: 18/02/2014, 06:20
Báo cáo khoa học: The influence of cold shock proteins on transcription and translation studied in cell-free model systems pdf
... different concentrations were used to monitor the concentration dependent effects on gene expression. We analyzed the influence on expression rate of H-Ras by western blotting experiments and of chloramphenicol-acetyltransferase ... distinct band of transcription product was also present as a small amount of undigested plasmid. The addition of CSP resulted in the loss of thes...
Ngày tải lên: 07/03/2014, 21:20
A review of heavy metal removal mechanisms in wetlands
... adsorption isotherms equations. Metal adsorption onto manganese oxide can be described by the Langmuir equation for a range of metal concentrations, over about one order of magnitude only (Van ... information about the adsorption mechanisms involved and both assume a uniform distribution of adsorption sites on the adsorbent and absence of any reactions between...
Ngày tải lên: 15/03/2014, 23:06
Chemical partitioning of heavy metal contaminants
... mobilization of these metals from the Chemical partitioning of heavy metal contaminants in sediments of the Pearl River Estuary22 Figure 2 The total heavy metal concentrations in top sediments along ... disso- lution and complete recovery of trace metals from geo- chemical phases in soils and sediments. Therefore, the chemical forms of heavy metals from the sequenti...
Ngày tải lên: 15/03/2014, 23:22