atmosphere soil and water bodies

... Soil and Water Quality: An Agenda for Agriculture http://books.nap.edu/catalog/2132.html Copyright © 2004 National Academy of Sciences All rights reserved This executive summary plus thousands ... http://www.nap.edu Soil and Water Quality: An Agenda for Agriculture http://books.nap.edu/catalog/2132.html Copyright © 2004 National Academy of Sciences All rights reserved This executive summary plus thousands ... http://www.nap.edu Soil and Water Quality: An Agenda for Agriculture http://books.nap.edu/catalog/2132.html Copyright © 2004 National Academy of Sciences All rights reserved This executive summary plus thousands...

Ngày tải lên: 16/03/2014, 16:20

Ngày tải lên: 17/03/2014, 16:20

... leads and polynyas provide a unique link between warm sea water and the cold overlying Arctic air In Polar Regions during late winter and spring ambient air is typically colder than seawater and ... Dissolved gaseous mercury and reactive mercury in water samples Dissolved gaseous mercury (DGM) can be produced in freshwater and marine environments through biotic and abiotic processes DGM ... 25 It is important to understand the kinetics and thermodynamics of the elementary and complex reactions of GEM in the atmosphere to truly comprehend the chemical and physical transformation of...

Ngày tải lên: 01/07/2014, 16:05

... concentration of the soil The study determines the forms and concentration of lead in the soil and evaluates plant growth and metal uptake from the soil under greenhouse conditions The bulk soil samples ... 1983) Soil pH was measured in a 1:1 soil: water suspension Duplicates and spikes were carried through the procedure in combination with National Institutes of Standards and Technology (NIST) Standard ... site during 1996 SOIL ANALYSIS The soil samples were air dried and sieved to mm before analysis Soil aggregates were crushed to pass through the sieve and the remaining rocks and debris were discarded...

Ngày tải lên: 11/08/2014, 15:20

... wetlands since water is pumped through the system at no cost Finally, the different chemistry and biology of marine and inland saltwater wetlands distinguishes them from the more usual freshwater ... trees, acid bogs by Sphagnum and other mosses, and alkaline fens by mosses and grasses (Horne and Goldman, 1994) Depending on the water depth and degree of shading, marshes and swamps also typically ... insect larvae and fish feeding reduces clogging Thus, free water surface wetlands with advective water flows and about 50 cm of water depth are much more efficient than subsurface wetlands where...

Ngày tải lên: 11/08/2014, 15:20

... in central California soils (Bañuelos and Meek, 1990; Terry and Zayed, 1994, 1998; Parker and Page, 1994; Wu and Huang, 1991) and for removing other toxic trace elements in soils (Baker et al., ... Cropping, irrigation, cultivation of the soil, and organic matter (Neal and Sposito, 1991) contribute to the solubilization and movement of immobile or complexed soil Se For this reason, some growers ... plots were more effective in lowering total soil Se in years 1992 and 1993 than in 1994 and 1995 The percentage changes between preplant and post-harvest soil Se concentrations (lost Se) after years...

Ngày tải lên: 11/08/2014, 15:20

... meter of soil depth removed, costs are between $8 and $24 million per hectare (includes disposal in a hazardous waste landfill and replacement with clean soil; Cunningham and Berti, 1993) Soil remediation ... Angle, R.L Chaney, and A.J.M Baker 1995b Zinc and cadmium uptake by Thlaspi caerulescens and Silene vulgaris grown on sludge-amended soils in relation to total soil metals and soil pH Environ Sci ... (Zn, Cd, Ni, Co, Mn) from soils, studies should be conducted to evaluate the independent effect of soil pH, and soil cations on yield and X uptake It was noted above that soil phosphate levels needed...

Ngày tải lên: 11/08/2014, 15:20

... toxic levels in the soil at the population site (e.g., Gregory and Bradshaw, 1965; Allen and Sheppard, 1971; Hogan and Rauser, 1979; Verkleij and Bast-Kramer, 1985; Schat and Ten Bookum, 1992b; ... available Schat and Vooijs (1997a) have demonstrated independent genetic control of Cu, Zn, and Cd tolerance in S vulgaris In agreement with this, Cu and Zn tolerance (Macnair, 1993) and Cu and Ni tolerance ... in F ovina On the other hand, several nonfunctional tolerances in S vulgaris, such as those to Ni and Co in zinc-mine populations (Schat and Ten Bookum, 1992b) and to Ag and Hg in copper mine populations,...

Ngày tải lên: 11/08/2014, 15:20

... nitric acid and perchloric acid according to standard methods (Jones and Case, 1990) The resulting solution was analyzed for metal content by ICP Certified National Institute of Standards and Technology ... 4.6 μmol L-1 H 3BO3 and 0.01 μmol L-1 MoO (pH between 5.5 and 5.8) Plants were cultivated in the growth chamber with 10-h light periods Light was provided by fluorescent and incandescent lamps All ... suggests that it may protect plants against herbivory and attack by fungal and bacterial pathogens (Boyd and Martens, 1994; Boyd et al., 1994; Pollard and Baker, 1997) It has been shown for a number...

Ngày tải lên: 11/08/2014, 15:20

... plants and some fungi The middle column shows the proteins and genes that are responsible for these activities CAD1 and CAD2 are genes identified in Arabidopsis, whereas HMT1, ADE2, ADE6, ADE7, and ... cadmium, mercury, and lead (Howden and Cobbett, 1992; Chen and Cunningham, personal communication), but have essentially normal levels of tolerance to other metals, including copper and zinc This ... expression of MT genes and detailed analysis of mutants with altered tolerance to Cu, Zn, and other metals MANIPULATION OF METAL LIGANDS FOR PHYTOREMEDIATION Plants that are selected and developed for...

Ngày tải lên: 11/08/2014, 15:20

... correlated with both soil toxicity and plant tolerance The few data sets in which this analysis is possible (Lloyd-Thomas, 1995; Meerts and Van Isacker, 1997; Dandridge and Pollard, unpublished) ... serpentine and on normal soils, Boyd and Martens (1998) found no significant differences in the ability of serpentine and nonserpentine populations to take up nickel from uniform soil media (tolerance ... Britain, Belgium, and Spain using both soil and hydroponic media He reported statistically significant differences between populations in their ability to hyperaccumulate zinc, nickel, and cadmium,...

Ngày tải lên: 11/08/2014, 15:20

... and released into the soil during decay of the leaves The soil contains about 10 mg nickel per gram soil The soil is healthy with respect to humus content and structure and contains nickel-resistant ... Szaniszlo, and C.P.P Reid, Comparison of the abilities of hydroxamate and other organic acids to chelate iron and other ions in soil Soil Sci 136, 145-157, 1983 Cline, G.R., C.P.P Reid, P.E Powell, and ... polluted by heavy metals and/ or organic xenobiotics Similar bacteria are isolated from desertified soils (Maatheide) and low-grade ore deposits in Belgium and Zaïre (Diels and Mergeay, 1990) All...

Ngày tải lên: 11/08/2014, 15:20

... and Ohlendorf, H.M Contaminants in drainage water and avian risk thresholds, in Dinar, A., and Zilberman, D., Eds., The Economy and Management of Water and Drainage in Agriculture Kluwer Academic ... be a major driver of Se biogeochemistry (Cutter and Bruland, 1984; Cooke and Bruland, 1987), as they are in the case of the sulfur cycling (e.g., Andreae, 1986; Bates et al., 1987) Recent findings ... County, CA (Figure 16.1B) However, waterborne Se conCopyright © 2000 by Taylor & Francis FIGURES 16.1A and B Relationship between waterborne Se concentration and salinity at two multicell evaporation...

Ngày tải lên: 11/08/2014, 15:20

... in a soil with reduced heavy metal concentrations and restored soil quality (soil fertility) Today, soil decontamination techniques use the ability of plants to extract heavy metals from soil ... 1994 Bollag, J.-M and W.B Bollag, Soil contamination and the feasibility of biological remediation, in Bioremediation: Science and Applications, Skipper, H.D and R.F Turco, Eds., Soil Science Society ... phytotoxic influence of Pb, Zn, and Cd in sandy soils, in Contaminated Soil ’95, van den Brink, W.J., R Bosman, and F Arendt, Eds., Kluwer Academic Publishers, The Netherlands, 1995 Gupta, S.K., Mobilizable...

Ngày tải lên: 11/08/2014, 15:20

... Evin; Soil C, Seclin; and Soil D, Ambares SOIL AMENDMENTS AGENTS AND THEIR EFFECTIVENESS AS IMMOBILIZING Mn and Fe Oxides Structure of hydrous Fe and Mn oxides Hydrous ferric and manganese oxides ... oxide deposition and elevated Fe and Mn concentrations Iron and Mn may be released into the soil solution and diffuse, subsequently forming oxides in the soil These may coat soil particles, creating ... all soils studied, both ryegrass and bean showed a decrease in shoot Cd and Zn After seven successive harvests, total Cd and Zn uptake by ryegrass was reduced by over 60% and 30% in Evin soil, and...

Ngày tải lên: 11/08/2014, 15:20

... 10 µg/mL CIPC and 3CA uptake within 30 days at 20°C and 30°C using 5g soil 194 Figure 4.6 – 10 µg/mL CIPC and 3CA uptake in clay and sandy soils within four days at 20°C using g soil ... with a water stream and might be degraded to 3CA that can disperse well in water Since CIPC and its major metabolite are the potential long-term threat for groundwater, surface waters and soil ... accumulate in water and soil (Linde 1994) In natural soil media, CIPC concentration reduces by adsorption on the soil surface and by the microbial route The main soil components are sand (silica...

Ngày tải lên: 22/12/2014, 21:19

... polluted soils and waters, for example, heavy-metal contaminated soil- water, acid drainage, and restoration of sodic soils and brackish waters The purpose of the book is to educate college seniors and ... IV Soil Dynamics and Agricultural-Organic Chemicals; V Colloids and Transport Processes in Soils; VI Land-Disturbance Pollution and Its Control; VII Soil and Water: Quality and Treatment Technologies ... soil and water chemistry: principles and applications I Bill Evangelou p cm Includes bibliographical references and index ISBN 0-471-16515-8 (cloth: alk paper) Soil pollution Soil chemistry Water- Pollution...

Ngày tải lên: 02/12/2016, 12:38

... wide range of factors including: soil type, field slope and drainage, irrigation system type and management, fertilizer and manuring practices, and other soil and water management practice However, ... Handbook 60 (Richards 1954), Rhoades and Clark 1978, FAO Soils Bulletin 10 (Dewis and Freitas 1970), and Standard Methods for Examination of Waters and Wastewaters (APHA 1980) The method most appropriate ... H and Chaney R.L (1974) Land treatment of wastewater Advances in Agronomy, Vol 26 N.C Brady (ed) Academic Press, New York Dewis J and Freitas F 1970 Physical and chemical methods of soil and water...

Ngày tải lên: 28/06/2014, 11:20

... Handbook of Environmental Analysis Chemical Pollutants in Air, Water, Soil, and Solid Wastes Pradyot Patnaik, Ph.D LEWIS PUBLISHERS Boca...

Ngày tải lên: 08/08/2014, 00:22