Extraction of heavy metal availability in contaminated soil by a short sequential extraction procedure
Extraction of heavy metal availability in contaminated soil by a short sequential extraction procedure
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Ngày tải lên: 16/03/2014, 00:07
A meta analysis and risk assessment of heavy metal uptake in common garden vegestable
... increases in heavy metal uptake (Khan and Frankland 1983). Soil pH significantly influences heavy metal concentrations in both soil and plant tissues. The effect of soil pH on mobility of heavy ... 26 Database Compilation Data from all qualifying studies were compiled into a Microsoft Excel Spreadsheet (database). Data extracted included the name of metal,...
Ngày tải lên: 15/03/2014, 23:10
Chelant extraction of heavy metal fromcontaminated soils
... use of chelants for in situ flushing of heavy metal- contaminated soils and sediments. Additionally, chelating agents may also be useful in electrokinetic extraction of metal contaminants from soils, ... flushing; Heavy metals; Copper; Lead; Zinc; EDTA 1. Introduction There are currently many sites that contain soils contaminated with heavy metals and low levels of...
Ngày tải lên: 15/03/2014, 23:22
Tài liệu Báo cáo " Study on reuse of heavy metal rich sludge in ceramic pigment and construction material production " docx
... environment (heavy metal leaching into rain water) were found. In further study, heavy metal leaching into rain water with lower pH value and longer soaking time should be investigated; the use 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...
Ngày tải lên: 12/02/2014, 17:20
A review of heavy metal removal mechanisms in wetlands
... (1984). Organic Complexation of heavy metals in estuarine and surface water samples. In: C. J. Cramer and J. C. Duinker, (Ed.). Complexation of trace metals in natural waters. Martinus Nijhoff, ... PURIFICATION CAPACITY OF WETLANDS Observations show that both natural and artificial wetlands have a capacity to purify wastewater containing heavy metals (Matagi, 1993;...
Ngày tải lên: 15/03/2014, 23:06
Adsorption of heavy metal inons on soils and soil constituents
... The main parameters in uencing heavy metal adsorption are soil pH, type and speciation of metal ion involved, heavy metal competition, soil composi- tion and aging. The individual behavior of Cd, ... con- sisting of soil matrix, soil water, and soil air. Heavy metal ions are the most toxic inorganic pollutants which occur in soils and can be of natural or o...
Ngày tải lên: 15/03/2014, 23:09
Effect of sludge processing mode, soil texture and soil ph on metal mobility in undisturbed soil columns
... sludge applications) were Hudson soil columns from a ®eld site that received a heavy loading of sludge in 1978. Romaine (Lactuca sativa) and oats (Avena sativa) were planted in alternate cycles, ... for some of the shortfall in applied metals in some cases (McGrath and Lane, 1989; Chang et al., 1984). These factors are not applicable in all cases, and researchers, assumi...
Ngày tải lên: 16/03/2014, 00:07
Bell & Howell Information and Learning 300 North Zeeb Road, Ann Arbor, MI 48106-1346 USA 800-521-0600UMI.The Potential of Soil Survey Data in a Quantitative Evaluation of Surficial Geology Mapping in Northern Maine by Rosalia EvansThesis submitted t pptx
... rate of mapping than conventional geologic mapping affords. Lindholm enjoyed this rate of mapping because of the availability of soil survey maps of the area. In turn, cost efficiency increased ... Halsey Silty material on terraces Salmon Nicholville Canadaigua Sandy material on terraces Allagash Madawaska Red Hook Atherton Silty and fine sandy floodplain deposits...
Ngày tải lên: 08/03/2014, 23:20
Chemical partitioning of heavy metal contaminants
... that a majority of the Ni in sediments was detrital in nature. Adamo et al. (1996) demonstrated that Ni in contaminated soils often occurs as inclusions within the silicate spheres rather than ... and Cu in various fractions also indicate a higher potential for mobilization of these metals from the Chemical partitioning of heavy metal contaminants in sediments of...
Ngày tải lên: 15/03/2014, 23:22
Intelligent Software Agents on the Internet: an inventory of currently offered functionality in the information society & a prediction of (near-)future developments
... will be capable of handling, and searching in, information in a domain dependent way. Search engines treat information domain-independently (they do not store any meta-information about the ... issues. 4.5 An example of a middle layer application: Matchmaking In [KUOK92] Daniel Kuokka and Larry Harada describe an agent application whereby potential producers and consumer...
Ngày tải lên: 08/10/2012, 15:22