Environmental Soil Chemistry - Chapter 7 docx

... 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 , ... , [10 -9 mol m -2 h -1 ] C L , [10 -6 mol m -2 ] S Al O O O O Al O O O O Al O O O O 1 k L o x a la te m a lo n a t e succinate FIGUR...

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

... of the hydraulic conductivity of various soils is given in Table 7. 1. 45 Arnold Verruijt, Soil Mechanics : 7. PERMEABILITY 47 7.2 Falling head test For soils of low permeability, such as clay, ... Chapter 7 PERMEABILITY 7. 1 Permeability test In the previous chapter Darcy’s law for the flow of a fluid through a porous medium has been formulated, in its simplest form, as q = −k dh d...

Ngày tải lên: 05/08/2014, 23:24

... Office of Water, EPA 816-R-9 7- 0 05, February 19 97. Manual for Evaluating Secondary Impacts of Wastewater Treatment Facilities, U.S. Environmental Protection Agency, 1 978 , 35. The clean water state ... evalua- tion of primary and secondary impacts. A detailed discussion of sampling techniques is found in Environmental Regulations, Chapters 6 and 7, by K. M. Mackenthun and J. I. Br...

Ngày tải lên: 11/08/2014, 04:20

... ix CHAPTER 6 CHAPTER 7 Environmental Soil Chemistry Second Edition For Joy and my doctoral advisors, David C. Martens and Lucian W. Zelazny Preface Since the first edition of Environmental Soil ... Department, Harcourt, Inc., 6 277 Sea Harbor Drive, Orlando, Florida 3288 7- 6 77 7. Academic Press An imprint of Elsevier Science 525 B Street, Suite 1900, San Diego, California...

Ngày tải lên: 13/08/2014, 02:20

... 40–8,800 872 20–40,615 1,960 850 Cu 1,346 458–2,890 970 200–8,000 79 1 52–3,300 1,600 72 0 F 1 67 370 73 9 — — — — — — Hg 8.6 3–18 — — 6.0 <0.1–55 — — Mn 194 32–5 27 500 150–2,500 5 17 73–3,861 2,660 ... the emphasis of soil chemistry is now on environmental soil chemistry. Environmental soil chemistry is the study of chemical reactions between soils and environmentall...

Ngày tải lên: 13/08/2014, 02:20

... Diffraction K saturation (K) a Mg saturation (K) a 298 383 573 823 298 383 Kaolinite 0 .71 5–0 .72 0 0 .71 5–0 .72 0 0 .71 5–0 .72 0 No peak b 0 .71 5–0 .72 0 0 .71 5–0 .72 0 Montmorillonite 1.4 1.4 1.4 1.0 1.82 1.42 Vermiculite ... 31. 376 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 0.0 07 0.065 0.033 MgO 4.65 40.30 0.231 2.138...

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 ... 4.4 3.3 4.2 2 .7 Hydroxyproline 0 .7 0 .7 0 .7 tr d tr d 0.8 0.3 Sulfur-containing Methionine 0.5 1.0 0.8 0.4 0.3 0 .7 0.3 Cystine 0.3 0.1 0.2 0.1 0.2 0....

Ngày tải lên: 13/08/2014, 02:20

... (gibbsite) SiO 2 (quartz) SiO 2 (soil) SiO 2 (amor) p H pH p H 6 7 8 6 7 8 -4 -3 -2 log K + 6 7 8 FIGURE 4.3. Solubility diagram of several primary and secondary minerals in equilibrium with 10 –3 M K + , 10 –3 M Mg 2+ , and soil- Fe with indicated ... Metals and Ligands for a Soil Solution a,b CO 3 SO 4 Cl PO 4 NO 3 OH Total metals Free ligands 1.2 97 × 10 –5 7. 6 07...

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 ... (19 97) gibbsite goethite 5.2 7. 2 γ-Al 2 O...

Ngày tải lên: 13/08/2014, 02:20