Heavy Metals Release in Soils - Chapter 7 pptx
Heavy Metals Release in Soils - Chapter 7 pptx
... POM− + = − [] [] [] 2 L1531Ch07Frame Page 150 Monday, May 7, 2001 2:36 PM © 2001 by CRC Press LLC 156 HEAVY METALS RELEASE IN SOILS on Fe-oxides compared with Mn-oxides. Metals incorporated into the structure ... 59 :77 8 -7 85. Barrow, N.J. 1986. Testing a mechanistic model. IV. Describing the effects of pH on zinc retention by soils. J. Soil Sci. 37: 29 5-3 03. Bunzl,...
Ngày tải lên: 12/08/2014, 02:20
Heavy Metals Release in Soils - Chapter 4 ppsx
... and mobility of metals from mine- and smelter-contaminated soils include measuring the distribution of metal contam- inants with progressive depth in soil profiles, monitoring the mineralogical properties of ... 28: 172 7- 1 73 2. L1531Ch04Frame Page 1 07 Monday, May 7, 2001 2:32 PM © 2001 by CRC Press LLC SOIL CONTAMINATED BY MINING AND SMELTING 105 modifying factors will diminish p...
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Heavy Metals Release in Soils - Chapter 5 ppt
... 130 HEAVY METALS RELEASE IN SOILS kinetics study, 20 mg Ca-smectite was shaken with 10 ml of 0.005 M Ca(NO 3 ) 2 solution containing initially 5, 10, 25, and 100 mg Zn L –1 for 30 min, 2 h, ... experimental kinetics during the first 120 min of sorption of a protein on calcium-saturated Wyoming smectite. Figure 5.10 Langmuir-Freundlich isotherm and experimental kinetics during 2880 m...
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Heavy Metals Release in Soils - Chapter 9 pot
... selenium in different types of soils in China. In Selenium in the Environment, Fran- kenberger W.T. Jr. and Benson S. Eds., Marcel Dekker, Inc., New York, pp. 4 7- 6 7. Underwood, E.J. 1 977 . Selenium, in ... 54, pp. 73 9 -7 51. Bar-Yosef, B. 19 87. Selenium desorption from Ca-kaolinite. Comm. Soil Sci. Plant Anal. 18, 7, pp. 77 1 -7 79 . Banuelos, G.S. and D.W. Meek. 19...
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Heavy Metals Release in Soils - Chapter 10 potx
... extracted also increased with increas- ing carbonate concentrations. Arsenic-Bearing Phases in Mine Sites Some studies reported that, in As-contaminated soils, the primary As mineral assemblage ... 2001 by CRC Press LLC 226 HEAVY METALS RELEASE IN SOILS for the use of kinetic or time-dependent models in soils have been suggested (Skopp, 1986). First, many reactions in so...
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Geochemical and Hydrological Reactivity of Heavy Metals in Soils - Chapter 7 pptx
... 0.142 0 .75 22.18 29.4 0.080 0.130 0.210 0.069 0.451 0 .77 22.93 29.6 0.204 0.2 27 0.432 0.1 57 0.823 0. 87 23. 27 26.9 0.382 0.326 0 .70 8 0.880 1.214 0 .73 21.19 29.0 0 .77 5 0.338 1.113 1.638 0. 873 0.42 ... 0.0 47 0.119 0.166 0.164 0.242 0.00 13. 57 — 0.230 0.000 0.230 0. 275 0.600 0.42 18.99 45.4 0.438 0.2 17 0.655 0. 678 1.669 1. 07 27. 40 25 .7 0.928 0. 572 1.501 1.565 1.253 0...
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Geochemical and Hydrological Reactivity of Heavy Metals in Soils - Chapter 5 pptx
... 1360 1298 1281 1 475 1360 1 170 1126 1284 1251 1 275 1161 1220 12 07 1301 13 07 1291 1261 1 375 1293 1160 1108 1212 1164 1 175 1116 11 67 1160 1245 1261 1 274 11 87 1362 1280 1041 1029 1 178 1114 1160 1114 ... models for bonding in silicates, Am. Mineral., 67, 421, 1982. 57. Fried, J.R., Sadat-Akhavi, M., and Mark, J.E., Molecular simulation of gas perme- ability: Poly(2,6-dimethyl-1,4...
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Geochemical and Hydrological Reactivity of Heavy Metals in Soils - Chapter 2 pps
... for In situ Treatment of Metal Contaminated Soils, EPA-542-R- 97 004, USEPA, Washington, D.C., 19 97. 3. Forstner, U., Land contamination by metals: Global scope and magnitude of problem, in Metal ... concentrations in the eluent were determined by placing 200 ml of the sample into a Bio-Tek multichannel (optical densitometer with fiber-optics technol- ogy; Bio-Tek Instruments, Inc.,...
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Geochemical and Hydrological Reactivity of Heavy Metals in Soils - Chapter 4 docx
... FN edge (C/m 2 ) SWy-1 montmoril- lonite 2.61 5.32 −0.34 −0 .73 0.03 0.105 (0. 87) 0.008 (0.0 67) Argentinean mont- morillonite 4.46 6.80 0 .72 0 .76 0. 07 0.096 (0.80) 0.008 (0.0 67) Illite 3.98 7. 75 1.63 2. 47 ... unraveling the affinity of mineral surfaces for both inorganic and organic species. The main effects of proton adsorption-desorption on the adsorption of metals in...
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Geochemical and Hydrological Reactivity of Heavy Metals in Soils - Chapter 8 ppsx
... provides insight into potential sorbent phases and other metal-bearing phases, thereby providing indirect speciation infor- mation. Bulk EXAFS was much more useful in providing direct species information, indicating ... quartz and K-feldspars, respectively. EMPA was less successful in identifying Zn-bearing phases in the subsoil, indicating that Zn was not found in abundant portions...
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