Environmental Soil Chemistry - Chapter 9 pdf

... on the soil acidity merry-go-round. Soil Sci. Soc. Am. Proc. 25, 428–432. McLean, E. O. ( 197 6). The chemistry of soil aluminum. Commun. Soil Sci. Plant Anal. 7, 6 19 636. Sparks, D. L. ( 198 4). ... Hargrove, 198 4) CaCO 3 + H 2 O → Ca 2+ + HCO – 3 + OH – . (9. 7) Liming Soils 281 8 7 6 5 4 3 2 0 60 120 180 0 μmol Al g -1 1 79 μmol Al g -1 5 19 μmol Al g -1 pH KOH, c...

Ngày tải lên: 13/08/2014, 02:20

... 2002104258 International Standard Book Number: 0-1 2-6 5644 6 -9 PRINTED IN THE UNITED STATES OF AMERICA 02 03 04 05 06 07 CTP 9 8 7 6 5 4 3 2 1 Environmental Soil Chemistry Second Edition Donald L. Sparks University ... students in soil science and for students and professionals in environmental chemistry and engineering, marine studies, and geochemistry. Writing the seco...

Ngày tải lên: 13/08/2014, 02:20

... force of the soil above the tunnel is W  = (γ s − γ w )[2Rd + (2 − π/2)R 2 ], (9. 9) the difference of the weight of the soil and the weight of the water in the same volume. The amount of soil that ... the tunnel is W = γ s [2Rd + (2 − π/2)R 2 ], (9. 8) where γ s is the volumetric weight of the soil, and d is the cover thickness, the thickness of the soil at the top of the tunnel. It...

Ngày tải lên: 05/08/2014, 23:24

... clustered in the mid-Atlantic and Western parts of the 8 1 Environmental Soil Chemistry: An Overview FERTILIZER SALES, in million tons per year YEAR 194 5 195 5 196 5 197 5 198 5 199 5 0 2 4 6 8 10 12 Nitrogen Phosphorus FIGURE ... 2–171 38 4.5 Co 9. 6 4–18 24 2–260 15 2–113 19 21 Cr 1,441 1 69 14,000 98 0 40–8,800 872 20–40,615 1 ,96 0 850 Cu 1,346 458–2, 890 97 0 200–8,000 791 52...

Ngày tải lên: 13/08/2014, 02:20

... cell d SiO 2 50 .95 60.06 3. 390 31.376 7.844 Al 2 O 3 16.54 101 .94 0 .97 4 9. 015 3.005 Fe 2 O 3 1.36 1 59. 69 0.055 0.5 09 0.170 FeO 0.26 71.85 0.007 0.065 0.033 MgO 4.65 40.30 0.231 2.138 1.0 69 CaO 2.26 ... δ-MnO 2 Manganite γ-MnOOH Pyrolusite β-MnO 2 Titanium oxides Anatase TiO 2 Ilmenite FeTiO 3 Rutile TiO 2 a Adapted from Taylor ( 198 7), Hsu ( 198 9), McKenzie ( 198 9), Schulze (...

Ngày tải lên: 13/08/2014, 02:20

... nitrogen and sulfur. Reprinted from Buffle ( 198 4), by courtesy of Marcel Dekker, Inc. Cl - CO 3 S-OH -COOH -OH N org -8 -6 -4 log C, M 2 SO 4 2- F - PO 4 3- S org LS LH X “Simple” ligands Sites of ... the soils. Schulten and co-workers (Schulten and Schnitzer, 199 7; Schulten et al., 199 8) expanded on their earlier two-dimensional structure of HA by using computa...

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... of charge 1 + H + 0 .90 0 .96 7 0 .93 3 0 .91 4 0.860 0.830 Li + 0.60 0 .96 5 0 .92 9 0 .90 7 0.835 0.800 Na + 0.45 0 .96 4 0 .92 8 0 .90 2 0.820 0.775 HCO 3 – , H 2 PO 4 – , 0.40 0 .96 4 0 .92 7 0 .90 1 0.815 0.770 H 2 ASO 4 – OH – , ... ligand c Ca 3. 395 × 10 -3 8. 396 × 10 –5 1.871 × 10 –4 1.607 × 10 –8 9. 050 × 10 –6 2.5 39 × 10 –5 3.600 × 10 –7 3.715 × 10 –3 Mg 5.541 × 10 –4 9. 7...

Ngày tải lên: 13/08/2014, 02:20

... 5.4. -1 .0 -0 .8 -0 .6 -0 .4 -0 .2 0 0 -5 0 -1 00 -1 50 -2 00 -2 50 -1 .0 -0 .8 -0 .6 -0 .4 -0 .2 0 0 -5 0 -1 00 -1 50 -2 00 -2 50 NET SURFACE CHARGE, cmol cm -2 x 10 -7 1M 0.01M 0.1M 0.001M GOUY-CHAPMAN GOUY-CHAPMAN GOUY-CHAPMAN GOUY-CHAPMAN STERN STERN STERN STERN ACROHUMOX ... Fe(OH) 3 Inner-sphere ATR-FTIR Su and Suarez...

Ngày tải lên: 13/08/2014, 02:20

... exchange b Kerr K K = {K -soil} [Na + ] c K K = {K -soil} 2 [Ca 2+ ] {Na -soil} [K + ] {Ca -soil} [K + ] 2 Vanselow d K V = {K -soil} [Na + ] , K V = {K -soil} 2 [Ca 2+ ] {Na -soil} [K + ] [ {Ca -soil} [K + ] 2 ] or ... K V = {K -soil} 2 [Ca 2+ ] {Na -soil} [K + ] [ {Ca -soil} [K + ] 2 ] or K V = K K 1 [ {K -soil} + [Ca -soil] ] or K K 1 [ {K -soil} + [Ca -soil] ] Krishnamoorthy– K KO =...

Ngày tải lên: 13/08/2014, 02:20

... 1GB, UK. 6 -8 .0 -8 .2 -8 .4 -8 .6 -8 .8 -9 .0 -9 .0 -5 .8 -5 .6 -5 .4 5 4 3 pH 3.1 log C S H δ -Al 2 O 3 log R H 1 FIGURE 7.27. The dependence of the rate of proton-promoted dissolution of γ-Al 2 O 3 , ... a p-jump study can be found in several sources (Sparks, 198 9; Zhang and Sparks, 198 9; Grossl et al., 199 4). Fendorf et al. ( 199 3) used an electron pa...

Ngày tải lên: 13/08/2014, 02:20