Environmental chemistry of soil

... risk assessment The aim of this review is therefore to provide an overview of the current knowledge of the environmental chemistry of phosphonates It concentrates on polyphosphonates, compounds ... available about the environmental chemistry and behavior of this compound [8–10] This review starts with a short description of the properties of phosphonates and their an...

Ngày tải lên: 16/03/2014, 00:07

... Valenton 10 .7 0 55.7 622,200 77 6.2 0 4.8 28 ,12 0 39.2 0 57.5 4.7 10 710 358 6 ,15 0 6,500 49 .1 0 10 ,400 44.4 10 ,10 6 1, 097 849 0. 71 323 233 60 ,15 0 2 91 5,233 5 ,17 5 2, 912 15 .4 1, 270 1, 900 20,670 13 ,4 41 77,300 ... 8.56 1. 8 16 .5 1, 415 23 1, 120 43.5 20,900 411 7,600 33,000 pH Organic matter Clay (%) Zinc (µg·g 1) Cadmium (µg·g 1) Lead (µg·g 1) Copper (µg·g 1...

Ngày tải lên: 18/06/2014, 19:20

... Z1, KCl Z1, CaCl2 Z2, KCl Z2, CaCl2 25 0 U, ppb 20 0 150 100 50 35 B TCLP-Extractable U 30 Z1, KCl Z1, CaCl2 Z2, KCl Z2, CaCl2 25 U, mg/kg 20 15 10 0 HA (% by wt.) FIGURE 2. 8 Effect of apatite amendment ... zeolites, 4A, © 20 01 by CRC Press LLC 4131/frame/C 02 Page 27 Friday, July 21 , 20 00 4:59 PM Remediation of Metal- and Radionuclides-Contaminated Soils 27 FIGURE 2. 4...

Ngày tải lên: 18/06/2014, 19:20

... No 935 5. 4-1 2 Of ce of Emergency and Remedial Response, Washington, D.C EPA/540/F-94/0 43, PB9 4-9 632 82, 1994, 17 © 2001 by CRC Press LLC 4 131 C 03/ frame Page 76 Monday, July 24, 2000 3: 07 PM 76 Environmental ... Charterhouse soil - control 28 29 30 31 32 2θ/° FIGURE 3. 3 Portion of XRD trace showing the prominent peaks of CA-rich pyromorphite (Py) identified in th...

Ngày tải lên: 18/06/2014, 19:20

... of Ca2+ signi - © 2001 by CRC Press LLC 41 31/frame/C 04 Page 82 Wednesday, August 9, 2000 3:13 PM 82 Environmental Restoration of Metals–Contaminated Soils FIGURE 4. 3 Soil-water partitioning of ... assumed © 2001 by CRC Press LLC 41 31/frame/C 04 Page 84 Wednesday, August 9, 2000 3:13 PM 84 Environmental Restoration of Metals–Contaminated Soils FIGURE 4. 5 Eff...

Ngày tải lên: 18/06/2014, 19:20

... Zeolite 45. 0 35. 5 21.8 15. 5 34.1 34.1 28.7 a ab bc c ab ab b 32.7 35. 5 13.6 5. 45 13.6 8.20 4.68 a a b b b b b 95. 5 80 .5 61.4 20 .5 84.6 56 .0 24.6 a a b c a b c 1 15 a 1 15 a 101 ab 99.6 ab 108 ab 1 15 a ... Saturation (%) Soils H2O KCl Chungfu A B 5. 0 5. 5 4.3 4 .5 23 .5 15. 2 113 102 481 52 4 406 374 12.4 9.9 3.82 3.77 31 38 Tatan C D 5. 5 5. 4 4.7 4.8 12.1 12.9 726...

Ngày tải lên: 18/06/2014, 19:20

... mg kg Pb-DTPA, mg kg -1 112 R2= 0. 460 ** 0.8 0 .6 0.4 0.2 -1 R = 0 .62 *** Mn-DTPA, mg kg -1 Zn-DTPA, mg kg 70 y = -0 .62 9Ln(x) = 1.83 Soil pH Soil pH 1.2 0.8 0 .6 0.4 0.2 y = -9 .348x + 85. 96 60 R = ... 4131/frame/C 06 Page 1 16 Friday, July 21, 2000 4: 56 PM 1 16 Environmental Restoration of Metals–Contaminated Soils 5.00 y = -0 .545x + 7.14 4.50 -1 6...

Ngày tải lên: 18/06/2014, 19:20

... LLC 4131/frame/C 07 Page 134 Friday, July 21, 2000 4:53 PM 134 Environmental Restoration of Metals–Contaminated Soils FIGURE 7. 4 Wet sieving of metals-contaminated soil through an 8-in sieve before ... CRC Press LLC 4131/frame/C 07 Page 1 37 Wednesday, August 9, 2000 3:09 PM Physical Separation of Metal-Contaminated Soils 1 37 FIGURE 7. 8 Closeup of grizzly bars at top...

Ngày tải lên: 18/06/2014, 19:20

... 4131/frame/C 08 Page 1 68 Friday, July 21, 2000 4:52 PM 1 68 Environmental Restoration of Metals–Contaminated Soils Anolyte Treatment Treatment Supply NO 3- Cl- Anode (+ ve) Catholyte DC Power NO 3- ClSO42NO 3- ... the cross-sectional area of the soil treated (L2) © 2001 by CRC Press LLC 4131/frame/C 08 Page 182 Friday, July 21, 2000 4:52 PM 182 8. 8.4 Environmental...

Ngày tải lên: 18/06/2014, 19:20

... Year under Irrigation No of Years Irrigated 2-1 , S-2, S-3 2-4 , S-5 2-6 , S-7, S-8 S -9 , S-10 S-11 S-12, S-13 S-14, S-15 S-16, S-17 Tlaxcoapan Tlahualilpan Mixquiahuala Tepatepec Actopan Atitalaquia ... Tepatepec Lagunilla Lagunilla Tepatepec Progreso 191 2 191 2 192 0 195 4 197 2 197 6 197 6 197 9 87 87 79 35 27 23 23 20 TABLE 9. 4 Range, Mean, and Standard Deviation of Soil Ch...

Ngày tải lên: 18/06/2014, 19:20

... chemical speciation of Se in cultivated soils Identification of the chemical forms of Se in soils is very difficult because of the presence of Se in small amounts and complex matrix of soils But recent ... in restoration of soils contaminated with toxic metals: On-site management of contaminants in order to reduce exposure risk Excavation of the contaminated soil and...

Ngày tải lên: 18/06/2014, 19:20