Environmental Soil Chemistry - Chapter 6 docx

... 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 , ... for 24-hr periods (each replenishment represents a 24-hr extraction) with HNO 3 at pH 6. 0. From Scheckel et al. (2001), with permission. H n SiO 4 n-4...

Ngày tải lên: 13/08/2014, 02:20

... VI.2.14] The (Q a /Q w ) min is the minimum air-to-water ratio (in vol/vol), and this is the air-to-water ratio for the above-mentioned ideal case. The actual air- to-water ratio is often chosen to be a ... Eq. VI.2.14 to determine the minimum air-to-water-ratio: So, (Q a /Q w ) min = 10.25 (dimensionless) c. Use Eq. VI.2.15 to determine the air-to-water-ratio: So, (Q a /Q w ) = 30.75 (dime...

Ngày tải lên: 10/08/2014, 20:20

... potential of GIS, Journal of Environmental Management, 68 , 31 5-3 28, 2003. 11. Foster, D., Wood, A., and Griffiths, M., The Water Framework Directive (2000 /60 /EC) - an introduction, Department ... by Taylor & Francis Group, LLC 110 GIS for environmental decision-making 6. 5.2 Removal of Peak Value Comparison of Figure 6. 4a with Figure 6. 5a shows the very localis...

Ngày tải lên: 12/08/2014, 05:21

... 2002104258 International Standard Book Number: 0-1 2 -6 564 4 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 ... ix CHAPTER 6 CHAPTER 7 Environmental Soil Chemistry Second Edition For Joy and my doctoral advisors, David C. Martens and Lucian W. Zelazny Prefac...

Ngày tải lên: 13/08/2014, 02:20

... 150–2,500 517 73–3, 861 2 ,66 0 61 0 Mo 14.3 1–40 7 2–30 — — 13 8 Ni 235 36 562 510 20–5,300 121 16 2,120 380 350 Pb 1,832 1 36 7 ,62 7 820 120–3,000 281 52–2,914 1,700 61 0 Sb 10 .6 2–44 — — — — — — Se ... contaminants in water and soil and their impact on plant, animal, and human health, the emphasis of soil chemistry is now on environmental soil chemistry. Environmental so...

Ngày tải lên: 13/08/2014, 02:20

... cell d SiO 2 50.95 60 . 06 3.390 31.3 76 7.844 Al 2 O 3 16. 54 101.94 0.974 9.015 3.005 Fe 2 O 3 1. 36 159 .69 0.055 0.509 0.170 FeO 0. 26 71.85 0.007 0. 065 0.033 MgO 4 .65 40.30 0.231 2.138 1. 069 CaO 2. 26 56. 08 0.081 ... Inorganic Soil Minerals a IR (nm) Radius ratio b CN O 2– 0.140 — — F 0.133 — — Cl – 0.181 — — Si 4+ 0.039 0.278 4 Al 3+ 0.051 0. 364 4 ,6 Fe 3+ 0. 064 0.457...

Ngày tải lên: 13/08/2014, 02:20

... sulfur. Reprinted from Buffle (1984), 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 organic complexants of ... Haplaquoll Proposed b C (%) 56. 4 58.2 54.2 61 .8 H (%) 5.5 5.4 6. 0 5.9 N (%) 4.1 3.1 6. 0 2.5 S (%) 1.1 0.7 0.9 — O (%) 32.9 32 .6 32.9 29.8 Total acidit...

Ngày tải lên: 13/08/2014, 02:20

... PO 4 NO 3 OH Ca 91. 36 b 2. 26 5.03 0.43 0.23 0 .68 — Mg 91.95 1 .60 4.02 0.35 0.33 1.72 0.03 K 99.29 0.14 0. 36 0.08 — 0.12 — Na 98.97 0.27 0.58 0.12 0.01 0.05 — Cu 1. 86 95. 26 0.13 — 1 .68 — 1. 06 Zn 42.38 ... 131 11 10 9 8 7 6 5 4 3 -6 -5 -4 -3 log Al 3 + + 3pH log H 4 SiO 4 ° I llite Pyrophyllite M usc o vite Ka olin ite (6) M g - M o n t m o r i l l o n i te...

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 ... (1999) 6. 31 6. 76 Montmorillonite Inner-...

Ngày tải lên: 13/08/2014, 02:20