Environmental Soil Chemistry - Chapter 2 pps

... 0.3 20 3 4 .2 Cu 25 <1–700 30 2 25 0 50 33 F 430 <10–3,700 20 0 20 –700 950 640 Fe 26 ,000 100–>100,000 40,000 2, 000–550,000 41,000 41,000 Ga 17 <5–70 20 2 100 18 18 Ge 1 .2 <0.1 2. 5 1 0.10–50 ... polyhedra (Figs. 2. 2A and 2. 2B, respectively) to bond: point-to-point, the most stable configuration, edge-to-edge, and face-to-face, the least stable configuration (F...

Ngày tải lên: 13/08/2014, 02:20

... 34 .26 7 39 .25 2 17 20 .489 21 .615 22 .977 24 .769 27 .587 30.191 33.409 35.718 40.790 18 21 .605 22 .760 24 .155 25 .989 28 .869 31. 526 34.805 37.156 42. 3 12 19 22 .718 23 .900 25 . 329 27 .20 4 30.144 32. 8 52 36.191 ... 36.191 38.5 82 43. 820 20 23 . 828 25 .038 26 .498 28 .4 12 31.410 34.170 37.566 39.997 45.315 25 29 .339 30.675 32. 2 82 34.3 82 37.6 52 40...

Ngày tải lên: 11/08/2014, 10:22

... Control Number: 20 021 0 425 8 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 ... . . . . . . . . . 22 8 Sorption–Desorption Reactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8 Contents ix CHAPTER 6 CHAPTER 7 Environm...

Ngày tải lên: 13/08/2014, 02:20

... 194 32 527 500 150 2, 500 517 73–3,861 2, 660 610 Mo 14.3 1–40 7 2 30 — — 13 8 Ni 23 5 36–5 62 510 20 –5,300 121 16 2, 120 380 350 Pb 1,8 32 136–7, 627 820 120 –3,000 28 1 52 2, 914 1,700 610 Sb 10.6 2 44 ... — 1800 20 0 20 120 100 90 10 35 Cobalt 90 27 0 24 –90 1–15 5 25 7–100 — — — 150 50 5 20 10 74 0.1 0.3 Copper 2 100 30–160 4–30 18– 120 20 20 0 — — — 15 90 15 50 70 25 0 4...

Ngày tải lên: 13/08/2014, 02:20

... SO 2 4 , Ca 2+ , Sr 2+ , Fe 2+ , Al 3+ , Se 3+ Cl – , CO 2 3 , ClO – 4 , NO – 3 Transition acids: Group II metals Transition bases Cr 2+ , Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ Br – , NO – 2 , ... OH Carbonyls Humins 510 ± 20 20 0 ± 20 310 ± 20 360 ± 30 26 0 ± 20 Humic acids 720 ± 40 310 ± 20 420 ± 30 130 ± 30 130 ± 10 Fulvic acids 860 ± 40 400 ± 20 460 ± 20...

Ngày tải lên: 13/08/2014, 02:20

... 0.450 Ca 2+ , Cu 2+ , Zn 2+ , Sn 2+ . 0.60 0.870 0.749 0.765 0.485 0.405 Fe 2+ , Ni 2+ , Co 2+ Sr 2+ , Ba 2+ , Ra 2+ , Cd 2+ , 0.50 0.868 0.744 0.670 0.465 0.380 Hg 2+ , S 2 Pb 2+ , CO 3 2 , MoO 4 2 0.45 ... Ca 2+ + 2HCO 3 – , (anorthite) (kaolinite) (4.18) 2NaAlSi 3 O 8 + 2CO 2 + 6H 2 O (albite) =Al 2 Si 4 O 10 (OH) 2 + 2Na + + 2HCO 3 – + 2H 4 SiO 4...

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 ... 5.B1. 10 8 6 4 2 0 0 0.5 1 2 x, 10 -8...

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 K 1 [ {K -soil} + 1.5 {Ca -soil} ] Gaines–Thomas d K GT = {K -soil} [Na + ] , K GT = {K -soil} 2 [Ca 2+ ] {Na -soil} [K + ] [ {Ca -soil} [K + ] 2 ]...

Ngày tải lên: 13/08/2014, 02:20

... applied to soils, can be expressed as (q t /q ∞ ) = 4 Dt 1 /2 /r 2 – Dt/r 2 , (7.13) π 1 /2 In t, h (C 0 - C), μmol dm -3 Porirua Soil Okaihau Soil r 2 = 0.990 r 2 = 0.998 0 1-1 -2 23456 0 20 40 60 80 100 120 140 160 FIGURE ... 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...

Ngày tải lên: 13/08/2014, 02:20

... –0.1 1/2MnO 2 + e – + 2H + = 1/2Mn 2+ + H 2 O 20 .8 12. 8 8.8 [Mn 3+ (PO 4 ) 2 ] 3– + e – = [Mn 2+ (PO 4 ) 2 ] 4– 20 .7 20 .7 20 .7 Fe(OH) 2 + + e – + 2H + = Fe 2+ + 2H 2 O 20 .2 10 .2 6 .2 1/2Fe 3 O 4 + ... Soils 25 20 15 10 5 0 -5 4567 8 pe pH Mn 3+ ,Mn 4+ Mn 2+ N 2 O ( 4 .0 x 1 0 -7 M P a ) N 2 (0.8 atm.) O 2 (10 - 6 M) H 2 O - O 2...

Ngày tải lên: 13/08/2014, 02:20