Arsenic immobilization by calcium arsenic precipitates in lime treated soils

... xxx–xxx Table 3 Mineral formations and TCLP As concentrations in lime As–kaolinite slurries following 1 month curing CayAs molar ratio Lime NaAsO –kaolinite 2 Lime Na HAsO •7H O–kaolinite 242 Phases ... B.V. All rights reserved. doi:10.1016/j.scitotenv.2004.03.016 Arsenic immobilization by calcium arsenic precipitates in lime treated soils Deok Hyun Moon*, Dimitris Derm...

Ngày tải lên: 15/03/2014, 23:48

... present in soil–root interface. Conclusions Liming increased both the pH and Ca 2+ concentration in soil solution. In soils dominated by variable charge components, pH-induced increases in surface ... Cd in soils can be immobilized by increasing the soil pH through ad- dition of liming materials. Decreases in Cd uptake arise from increased Cd 2+ adsorption caused by pH-...

Ngày tải lên: 16/03/2014, 00:25

... that growing Chinese brake fern in conjunction with phosphate amendments increases the effectiveness of remediating As-contaminated soils, by increasing As uptake and decreasing As leaching. Published ... uptake by 55–72% over the control (Pickering et al., 2000). However, in the soil system, phosphate addition increases available arsenic by repla- cing adsorbed arsenic, thus res...

Ngày tải lên: 16/03/2014, 00:07

... has the Ca 2+ - binding sites, troponin I (TnI) has the inhibitory function, and troponin T (TnT) is the actin–tropomyosin-binding component. Tn works as a sensor of intracellular calcium concentration. ... Reinach, F.C. (1999) Regulatory properties of recombinant tropomyosins containing 5-hydroxytryptophan: Ca 2+ -binding to troponin results in a conformational change in a region of tr...

Ngày tải lên: 20/02/2014, 11:20

... towards developing suitable methods for lowering arsenic levels in drinking water. Natural occurring contamination by arsenic has been also observed in the Red River delta of northern Vietnam. ... subjected to determination of their chemical composition as well as naturally occurring arsenic contents (see Table 3). Arsenic possibly present in these minerals was removed...

Ngày tải lên: 15/03/2014, 23:49

Ngày tải lên: 28/03/2014, 15:20

... incubated for 30 min with intermittent stirring. The suspension was centrifuged at 15,000g for 10min at 4℃, and the protein concentration was determined by Coomassie blue dye-binding assay. An ... edema, inflammatory cell infiltration and thickening of the alveolar wall were seen in emulsified isoflurane preconditioning group (Grade 2, Fig. 1D), suggesting that lung injury induced...

Ngày tải lên: 25/10/2012, 11:00

... circumferential strain and strain rate by 2DST in normo-, hypo-, akinetic and dyskinetic seg- ments of post-infarct patients 8-13, 30-37 , which were not reliably accessible by TDI. Radial strain also ... Key words: Myocardial infarction, Two-dimensional strain, Strain rate imaging, Late Enhancement MRI Introduction After acute myocardial infarction (AMI) the dis- crimination of...

Ngày tải lên: 25/10/2012, 11:15

... an external factor. Nevertheless, it is included in internal factors for accentuating firm’s insufficient investment on maintaining and improving their intangible assets. Normally, at this moment, ... the main objective of this research paper, for examining the existing challenges and recommending some considering points for both firms and the government to take into account when think...

Ngày tải lên: 06/11/2012, 10:26