Environmental soil chemistry

... http://www.academicpress.com Library of Congress Control Number: 200 2 104 258 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 87654321 For Joy and my doctoral ... 203 Suggested Reading 204 CHAPTER Kinetics of Soil Chemical Processes 207 Rate-Limiting Steps and Time Scales of Soil ... students in soil sc...

Ngày tải lên: 13/08/2014, 02:20

... < 10 0–2,000 < 1. 0

Ngày tải lên: 13/08/2014, 02:20

... 0.05 0.14 21 ,000 32 20 23 ,000 950 1.5 25 23 ,000 20 38 80 474,000 1,000 14 90 26 0 0 .2 16 0.05 27 7,000 2. 2 370 Sediments (mean)c 72, 000 7.7 100 460 19 29 ,400 66,000 0.17 190 14 72 4 .2 33 640 41,000 ... Chrysotile Pyrophyllite — — — 2H2O — — — Si2 Si2 Si2 Si2 Si2 Si2 Si4 Al2 Al2 Al2 Al2 Mg3 Mg3 Al2 O5(OH)4 O5(OH)4 O5(OH)4 O5(OH)4 O5(OH)4 O5(OH)4 O10(OH )2 Talc — Si4 Mg3 O...

Ngày tải lên: 13/08/2014, 02:20

... 9.1 3. 6 1.7 1.7 4 .3 3.9 3. 3 trd 2.9 1.5 13. 1 8.9 6.0 5 .3 3.0 5.7 5 .3 4.2 0.8 1.7 1.2 11.2 7.9 3. 8 4.4 2.2 4.1 3. 8 2.7 0 .3 0.5 0 .3 0.4 0.6 1.7 1496.0 1.0 0.1 0.5 0.2 0.9 1476.0 0.8 0.2 0.6 0 .3 1.6 ... 4.82 3. 38 3. 26 3. 40 3. 74 3. 78 3. 70 4.09 39 .05 35 .37 34 .67 33 .95 14.0 15.2 15.7 14 .3 10.9 17.0 17.9 17.2 8.1 10.4 10.6 10.0 From Kononova (1966) Soils A,...

Ngày tải lên: 13/08/2014, 02:20

... 0.868 0. 744 0.670 0 .46 5 0.380 0 .45 0 .40 0.867 0.867 0. 742 0. 740 0.665 0.660 0 .45 5 0 .45 5 0.370 0.355 Inorganic ions of charge 3+ 0.730 0. 540 0 .44 5 0. 245 0.180 0.395 0.160 0.095 0.90 0 .40 0.725 ... yr P 10 Ka oli nit e Al(OH)3 (gibbsite) (6) pH log K+ -4 -3 -2 7 p H6 -5 -4 log H4SiO4° SiO2 (amor) -6 SiO2 (soil) SiO2 (quartz) -3 FIGURE 4. 3 Solubility diagram...

Ngày tải lên: 13/08/2014, 02:20

... ACRORTHOX - Ap ACRORTHOX - B2 TROPUDALF - Ap TROPUDALF - B2 -0 .8 -0 .6 STERN -0 .4 STERN 0.01M -0 .2 0 -5 0 -1 00 -1 50 -2 00 -2 50 0.001M -5 0 -1 00 -1 50 -2 00 -2 50 SURFACE POTENTIAL, mV FIGURE 5. 16 Comparison ... Evolution of Soil Chemistry NET SURFACE CHARGE, cmol cm-2 x 1 0-7 -1 .0 163 GOUY-CHAPMAN GOUY-CHAPMAN STER...

Ngày tải lên: 13/08/2014, 02:20

... {K -soil} [Na+] , {Na -soil} [K+] [ {K -soil} 2 [Ca2+] {Ca -soil} [K+]2 [ {K -soil} + [Ca -soil] or KK Krishnamoorthy– Overstreet {K -soil} 2 [Ca2+] {Ca -soil} [K+]2 [ KKO = [ ] ] ] ] ] ] {K -soil} + [Ca -soil] ... {K -soil} + [Ca -soil] [ {K -soil} 2 [Ca2+] {Ca -soil} [K+]2 {K -soil} + 1.5 {Ca -soil} KGT = [ ] [ {K -soil} 2 [Ca2+] {Ca -soil} [K+]2 2[2{Ca soil} + {K soil} ] KG = {K soil} [...

Ngày tải lên: 13/08/2014, 02:20

... [1 0-9 mol m-2h-1] O 15 O O Al O 10 O ate lon ma kL O O inate succ Al O O 0 0.5 1.0 1.5 CS, [1 0-6 mol m-2] L -8 .0 FIGURE 7. 27 The dependence of the rate of proton-promoted dissolution of γ-Al2O3, ... The Boulevard, Langford Lane, Kidlington 0X5 1GB, UK δ -A l2 O log RH -8 .2 -8 .4 3.1 -8 .6 -8 .8 log C SH -9 .0 -9 .0 -5 .8 -5 .6 -5 .4 pH proton complex (...

Ngày tải lên: 13/08/2014, 02:20

... 29 .8 26 .8 23.6 21.1 19 .8 18. 9 15.1 14.9 14.1 11.3 4.6 22.9 19 .8 15.1 14.3 9 .8 12.1 8. 4 8. 6 9.1 5.4 –0.7 20.9 17 .8 12.1 11.9 5 .8 9.6 5.7 6.1 7.1 3.1 –3.3 35.1 33.6 32.6 30.0 20 .8 11.6 –9.5 28. 4 ... –7.9 –5.5 8. 1 8. 7 30.6 29 .8 26.0 24 .8 9.9 18. 9 16.5 15.4 15.0 14.9 14 .8 7.62 6.9 2.6 2.9 30.6 21 .8 22.0 16 .8 –6.1 10.9 6.5 13.4 3.0 9.9 6.3 1.0 2.4 2.6 8. 1 30.6 1...

Ngày tải lên: 13/08/2014, 02:20

... Reflections 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) Ion activities: ... From Robarge and Johnson ( 199 2), with permission Glossary of Soil Science Terms ( 198 7) Schwertmann et al ( 198 7), Ulrich ( 198 7), Reuss and Walthall ( 198 9) Introd...

Ngày tải lên: 13/08/2014, 02:20

... Bartlett, R.J (1981) Nonmicrobial nitrite-to-nitrate transformation in soils Soil Sci Soc Am J 45, 105 4 105 8 Bartlett, R.J (1986) Soil redox behavior In Soil Physical Chemistry (D.L Sparks, ed.), pp ... coefficient (see ′ Chapter 6), and ESR is the exchangeable Na+ ratio (Richards, 1954) The k G , expressed in (mmol liter–1)–1/2, is ′ [Na -soil] [Ca2+ + Mg2+]1/2 , [Ca -soil + Mg -...

Ngày tải lên: 13/08/2014, 02:20

... (pH) and promoting mineralization of SOM, on the other hand this treatment adds Ca cations into soil and thus increases the probability of the formation of insoluble Ca-phosphates The increased soil ... van Hees et al 200 3a, etc.) The SEB and BS in planting holes were also elevated by the application of basalt grit This elevation was not as pronoun...

Ngày tải lên: 07/08/2014, 10:22

... each other, and to test the interest of tree- ring analysis 1994); a more METHODS We selected the Amance State Forest, about 000 ha, in the Lorraine plain, 15 km northeast of Nancy, in the northeast ... availability of these elements in the soil This may be an indication of acidification of the soil Acidification in a soil, whatever its causes, is th...

Ngày tải lên: 08/08/2014, 18:21