So il Geochem ica l Ba seline and Env ironm en ta l Background Va lues of Agr icultura l Reg ion s in Zhejiang Prov ince.

2007, 23 (2) : 81-88 Journal of Ecology and Rural Environm ent 1, 1, 2, 1 (1., 311203;, 065000) 2. :,, 13,,, 52(), : ; ; ; : P632; X8; P59 : A: 1673-4831 (2007) 02-0081 - 08 So il Geochem ica l Ba seline and Env ironm en ta l Background Va lues of Agr icultura l Reg ion s in Zhejiang Prov ince. WANG Q ing2hua 1, DONG Yan2xiang 1, ZHOU Guo2hua 2, ZHENG W en 1 ( 1. Zhejiang Institute of Geological Survey, Hang2 zhou 311203, China; 2. Institute of Geophysical and Geochem ical Exp loration, Langfang 065000, China) Abstract: Based on the soil geochem ical data obtained during the agricultural geo2environmental survey of Zhejiang Prov2 ince and the basic concep tion of geochem ical background values, the soil geochem ical baseline was divided into 13 statisti2 cal units in light of types of soil parent materials. The three major agricultural regions of Zhejiang Province were fixed as statistical units for soil environmental background values. After repeatedly crossing out anomalous values, mean values, standard deviations and variation coefficients of 52 elements ( or oxides) were obtained, and may be cited as major geo2 chem ical data for formulation of regional soil environmental quality standards, and evaluation and remediation of soil pollu2 tion. Key words: geochem ical baseline; soil environmental background; multipurpose regional geochem ical investigation; Zhejiang Province 1 1. 1, ( ),,(X ) 2 (S ),, :X 2S,,, : : R = 1. 96 C V / n - 2 100;C V = S /X 100, A C = 100% - R : R, % ; C V, % ; n ; S ; X ; A C, % :R 30%, ; n, 30%, 70%,, 2030,,,,30% : (200214200015) : 2006-12- 20 ' 1994-2007 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net

82 23 2 : (1),, ; ( 2),,,, 1. 2 :, [ 1 ], 1. 3 [ 2 ],,,,,, 2 2. 1 ( ) (-- ) ( - ), 36 544 km 2 (DD 2005-01 ), 1 km - 2, 1 ( 4 km 2 ) - 1, 020 cm; 1 ( 4 km 2 ) - 1, 1 (16 km 2 ) - 1 [ 1 ( 16 km 2 ) - 1 ], 150200 cm52 493 344, 118 768 [ 3 ],, 2. 2 2. 2. 1,,,,,,,, 1,,, (1) 2. 2. 2, (020 cm ),,, ()()() ()() ()() ()() () () 5

2 : 83 1 Table 1Sta tistica l un its of so il geochem ica l ba seline in Zhejiang Prov ince : (:,, ) 144 : : : 74 (: 72 : 55 ) : () 18 : : : 152 420 329 247 540 51 27 : ( ) 21 3 3. 1 2, 90%, Na 2 O CaO, 70%,, 2, (), (C V < 0. 30) C V > 0. 30 103, 676 (52 13) 15% ; C V > 0. 50 7, 1% 22 13 C V < 0. 30, (), C V < Ba Be B i C Cd Ce Ga Ge La L i N Pb Rb Sc 0. 30 552 260, Sn Th U WY Zr A l 2 O 3 SiO 2, ( )Ca ( ) Na ( ) ( C V 0. 400. 55 ) ( ),, F Mo Sb Na,Cl I Sr Ca Na, Co Cr Cu Hg N i P Ti Ca NaCr Mo N i 0. 4 2, C V () Na 2 O CaO I Sb P Mn N i F, 3. 2 3,95%,, C V 3, (), > 0. 3016, 6. 2%,

84 23 2 Table 2Sta tistica l param eter of so il geochem ica l ba seline in north, ea st and m iddle Zhejiang (144) (152) (420) (329) (74) (72) (55) X C V X C V X C V X C V X C V X C V X C V Ag 62. 9 0. 23 67. 5 0. 19 74. 0 0. 11 73. 0 0. 13 53. 4 0. 26 60. 5 0. 30 57. 2 0. 22 Au 1. 32 0. 24 1. 35 0. 26 1. 57 0. 19 1. 47 0. 12 1. 40 0. 26 1. 95 0. 20 1. 34 0. 26 A s 4. 76 0. 23 7. 00 0. 27 6. 21 0. 24 8. 54 0. 28 9. 84 0. 30 10. 3 0. 36 9. 23 0. 37 B 71. 6 0. 09 36. 1 0. 25 73. 3 0. 09 71. 6 0. 08 58. 6 0. 21 63. 3 0. 22 45. 3 0. 36 Ba 431 0. 06 512 0. 25 496 0. 07 476 0. 04 429 0. 29 447 0. 28 412 0. 20 Be 1. 72 0. 06 2. 20 0. 11 2. 70 0. 13 2. 54 0. 12 1. 93 0. 11 2. 31 0. 15 1. 99 0. 13 B i 0. 18 0. 12 0. 27 0. 20 0. 41 0. 19 0. 40 0. 22 0. 33 0. 22 0. 41 0. 15 0. 26 0. 18 B r 2. 21 0. 25 1. 69 0. 26 2. 23 0. 29 2. 01 0. 22 1. 71 0. 22 2. 42 0. 34 1. 83 0. 28 C 1. 02 0. 12 0. 42 0. 17 0. 80 0. 29 0. 85 0. 27 0. 47 0. 20 0. 51 0. 13 0. 45 0. 16 Cd 109 0. 17 123 0. 21 106 0. 16 111 0. 13 93. 9 0. 23 131 0. 15 107 0. 26 Ce 67. 8 0. 10 80. 3 0. 11 77. 4 0. 11 75. 2 0. 09 75. 0 0. 14 79. 6 0. 10 71. 0 0. 12 Cl 78. 6 0. 18 41. 4 0. 18 75. 4 0. 22 79. 6 0. 19 41. 3 0. 15 31. 3 0. 22 49. 1 0. 29 Co 10. 8 0. 16 8. 96 0. 29 15. 9 0. 18 16. 5 0. 15 9. 98 0. 24 14. 2 0. 28 11. 5 0. 28 Cr 53. 6 0. 11 42. 4 0. 26 90. 6 0. 17 92. 3 0. 15 62. 0 0. 30 78. 0 0. 16 48. 4 0. 20 Cu 14. 0 0. 25 16. 1 0. 20 25. 8 0. 23 28. 4 0. 19 17. 6 0. 17 29. 9 0. 26 16. 1 0. 20 F 469 0. 11 443 0. 12 629 0. 16 660 0. 15 443 0. 10 599 0. 23 413 0. 28 Ga 12. 8 0. 08 15. 9 0. 09 19. 23 0. 13 19. 15 0. 12 16. 4 0. 09 19. 3 0. 11 16. 2 0. 08 Ge 1. 39 0. 09 1. 51 0. 08 1. 54 0. 07 1. 51 0. 06 1. 49 0. 11 1. 71 0. 07 1. 47 0. 10 Hg 42. 8 0. 21 43. 7 0. 28 47. 9 0. 17 41. 4 0. 14 37. 9 0. 32 62. 0 0. 28 40. 1 0. 25 I 2. 10 0. 39 2. 18 0. 35 1. 68 0. 37 1. 76 0. 30 3. 08 0. 40 3. 97 0. 31 3. 06 0. 36 La 38. 1 0. 09 42. 7 0. 10 40. 5 0. 10 40. 7 0. 07 39. 3 0. 12 41. 8 0. 08 38. 5 0. 14 L i 27. 3 0. 08 37. 2 0. 15 51. 7 0. 20 52. 2 0. 19 39. 0 0. 16 40. 2 0. 11 33. 0 0. 18 Mn 467 0. 10 491 0. 22 623 0. 26 816 0. 24 536 0. 31 689 0. 35 578 0. 32 Mo 0. 38 0. 14 0. 97 0. 22 0. 45 0. 19 0. 47 0. 19 0. 90 0. 39 1. 19 0. 19 0. 69 0. 23 N 492 0. 21 440 0. 16 657 0. 25 572 0. 22 452 0. 23 660 0. 18 474 0. 13 Nb 13. 8 0. 10 21. 5 0. 12 17. 8 0. 10 17. 7 0. 05 19. 8 0. 12 19. 0 0. 08 16. 6 0. 27 N i 23. 5 0. 12 14. 3 0. 26 38. 2 0. 16 40. 0 0. 16 17. 5 0. 31 28. 8 0. 25 16. 9 0. 22 P 664 0. 08 239 0. 24 483 0. 22 606 0. 09 240 0. 27 390 0. 30 298 0. 33 Pb 18. 3 0. 13 28. 4 0. 15 28. 6 0. 19 26. 4 0. 17 26. 2 0. 06 28. 1 0. 10 26. 0 0. 14 Rb 83. 6 0. 10 120 0. 14 134 0. 17 134 0. 14 104 0. 13 118 0. 12 106 0. 24 S 96. 8 0. 28 84. 7 0. 29 111 0. 41 71. 7 0. 22 75. 8 0. 32 129 0. 18 105 0. 37 Sb 0. 39 0. 16 0. 59 0. 24 0. 47 0. 15 0. 49 0. 18 0. 78 0. 30 0. 81 0. 22 0. 75 0. 27 Sc 9. 71 0. 11 8. 69 0. 15 13. 4 0. 15 13. 8 0. 14 9. 98 0. 14 12. 7 0. 18 8. 52 0. 15 Se 0. 06 0. 35 0. 17 0. 21 0. 18 0. 33 0. 13 0. 19 0. 19 0. 35 0. 30 0. 22 0. 21 0. 27 Sr 153 0. 09 65. 4 0. 37 106 0. 09 120 0. 08 50. 2 0. 28 45. 0 0. 30 41. 3 0. 25 Sn 2. 85 0. 19 3. 24 0. 18 3. 70 0. 10 3. 46 0. 08 3. 13 0. 10 3. 12 0. 13 2. 79 0. 17 Th 10. 8 0. 10 15. 6 0. 14 14. 7 0. 11 14. 1 0. 11 15. 4 0. 12 15. 3 0. 09 13. 6 0. 18 Ti 4 210 0. 06 4 160 0. 14 4 804 0. 09 4 889 0. 07 4 401 0. 09 4 959 0. 12 4 166 0. 14 Tl 0. 49 0. 14 0. 78 0. 20 0. 78 0. 16 0. 75 0. 16 0. 72 0. 14 0. 80 0. 17 0. 60 0. 19 U 2. 09 0. 10 3. 45 0. 15 2. 49 0. 14 2. 35 0. 12 3. 38 0. 09 3. 34 0. 14 3. 06 0. 14 V 67. 8 0. 04 63. 7 0. 21 108 0. 12 108 0. 14 83. 2 0. 19 109 0. 18 67. 0 0. 21 W 1. 42 0. 22 1. 92 0. 10 1. 88 0. 10 1. 88 0. 10 2. 07 0. 13 2. 08 0. 11 1. 83 0. 18 Y 23. 4 0. 08 27. 0 0. 12 27. 7 0. 10 27. 8 0. 07 23. 1 0. 17 25. 0 0. 11 23. 3 0. 22 Zn 60. 7 0. 12 63. 4 0. 20 91. 2 0. 16 92. 4 0. 14 55. 1 0. 14 83. 8 0. 18 57. 4 0. 05 Zr 276 0. 18 313 0. 08 226 0. 14 215 0. 11 333 0. 06 251 0. 13 275 0. 13 A l 2 O 3 10. 6 0. 03 13. 0 0. 07 15. 7 0. 06 15. 6 0. 04 13. 4 0. 09 14. 6 0. 09 13. 4 0. 13 CaO 2. 6 0. 49 0. 31 0. 23 0. 75 0. 21 1. 53 0. 41 0. 27 0. 40 0. 23 0. 36 0. 21 0. 37 Fe 2 O 3 3. 59 0. 09 3. 99 0. 16 5. 49 0. 16 5. 69 0. 15 4. 91 0. 15 5. 83 0. 16 4. 30 0. 21 K 2 O 2. 05 0. 05 2. 53 0. 19 2. 73 0. 13 2. 79 0. 11 1. 82 0. 16 2. 52 0. 12 2. 24 0. 24 MgO 1. 83 0. 10 0. 57 0. 18 1. 76 0. 17 2. 06 0. 08 0. 59 0. 16 0. 91 0. 21 0. 68 0. 28 Na 2 O 1. 84 0. 05 0. 76 0. 46 1. 29 0. 21 1. 36 0. 16 0. 49 0. 55 0. 10 0. 30 0. 37 0. 50 SiO 2 68. 9 0. 02 74. 1 0. 03 65. 0 0. 05 63. 2 0. 05 73. 6 0. 04 70. 5 0. 04 74. 7 0. 04

2 : 85 2Table 2( Con tinued) (18) (247) (540) (51) (27) (21) X C V X C V X C V X C V X C V X C V Ag 58. 6 0. 08 55. 6 0. 21 63. 8 0. 25 60. 8 0. 28 63. 2 0. 32 65. 6 0. 23 Au 1. 76 0. 13 1. 15 0. 21 1. 20 0. 25 1. 11 0. 29 1. 36 0. 31 1. 58 0. 21 A s 20. 7 0. 46 7. 45 0. 25 6. 58 0. 23 5. 67 0. 39 6. 12 0. 29 8. 46 0. 28 B 61. 0 0. 21 39. 9 0. 33 28. 8 0. 32 24. 6 0. 38 27. 0 0. 29 24. 2 0. 30 Ba 363 0. 26 409 0. 26 580 0. 18 616 0. 21 553 0. 07 450 0. 23 Be 2. 17 0. 16 1. 99 0. 11 2. 29 0. 12 2. 23 0. 11 2. 31 0. 14 2. 63 0. 20 B i 0. 37 0. 24 0. 26 0. 18 0. 26 0. 26 0. 27 0. 26 0. 29 0. 21 0. 30 0. 28 B r 3. 00 0. 28 1. 71 0. 28 2. 62 0. 29 2. 73 0. 33 3. 34 0. 39 3. 04 0. 28 C 0. 57 0. 17 0. 43 0. 19 0. 59 0. 26 0. 59 0. 25 0. 69 0. 20 0. 52 0. 23 Cd 152 0. 08 121 0. 21 133 0. 19 139 0. 22 157 0. 07 117 0. 11 Ce 84. 0 0. 10 76. 6 0. 09 84. 7 0. 11 78. 0 0. 05 77. 9 0. 13 94. 6 0. 19 Cl 32. 7 0. 23 39. 6 0. 21 57. 0 0. 26 83. 6 0. 48 51. 6 0. 13 37. 7 0. 16 Co 13. 2 0. 31 9. 05 0. 25 9. 20 0. 30 10. 4 0. 35 30. 5 0. 48 17. 0 0. 38 Cr 77. 2 0. 26 46. 6 0. 23 34. 9 0. 33 34. 6 0. 36 112 0. 44 87. 0 0. 42 Cu 25. 1 0. 21 15. 0 0. 19 12. 1 0. 25 12. 2 0. 23 42. 7 0. 52 25. 5 0. 27 F 605 0. 43 436 0. 16 464 0. 20 421 0. 21 414 0. 10 548 0. 21 Ga 19. 3 0. 13 15. 7 0. 10 18. 2 0. 10 18. 9 0. 14 18. 7 0. 14 21. 5 0. 12 Ge 1. 69 0. 07 1. 50 0. 08 1. 49 0. 07 1. 49 0. 10 1. 54 0. 11 1. 51 0. 14 Hg 91. 8 0. 29 36. 9 0. 20 44. 1 0. 24 41. 2 0. 25 54. 4 0. 42 53. 9 0. 33 I 4. 16 0. 15 2. 50 0. 39 3. 44 0. 33 4. 08 0. 43 3. 41 0. 39 4. 66 0. 19 La 41. 3 0. 13 40. 9 0. 11 43. 6 0. 10 42. 7 0. 08 40. 3 0. 11 47. 1 0. 22 L i 44. 7 0. 14 38. 2 0. 15 32. 6 0. 20 31. 5 0. 30 29. 2 0. 19 36. 0 0. 10 Mn 591 0. 30 476 0. 31 697 0. 28 804 0. 32 890 0. 17 754 0. 33 Mo 1. 92 0. 48 0. 91 0. 21 0. 97 0. 25 0. 94 0. 22 1. 48 0. 29 2. 03 0. 46 N 639 0. 26 432 0. 15 573 0. 21 531 0. 19 596 0. 21 524 0. 18 Nb 19. 4 0. 15 19. 8 0. 08 21. 1 0. 10 19. 8 0. 05 38. 4 0. 39 21. 6 0. 17 N i 28. 7 0. 32 13. 5 0. 30 11. 3 0. 32 11. 2 0. 34 69. 9 0. 58 36. 3 0. 46 P 422 0. 36 187 0. 26 306 0. 35 350 0. 34 835 0. 54 341 0. 11 Pb 28. 5 0. 17 26. 9 0. 08 30. 1 0. 10 34. 6 0. 25 25. 2 0. 14 36. 1 0. 26 Rb 108 0. 23 112 0. 15 135 0. 09 130 0. 09 97. 8 0. 25 148 0. 18 S 185 0. 12 87. 8 0. 27 102 0. 33 119 0. 38 158 0. 21 171 0. 37 Sb 1. 72 0. 50 0. 60 0. 17 0. 52 0. 16 0. 41 0. 16 0. 54 0. 22 0. 56 0. 21 Sc 12. 5 0. 16 9. 12 0. 17 9. 62 0. 18 10. 4 0. 24 13. 2 0. 29 14. 1 0. 26 Se 0. 38 0. 23 0. 20 0. 28 0. 23 0. 26 0. 23 0. 32 0. 24 0. 31 0. 33 0. 25 Sr 43. 8 0. 16 53. 7 0. 28 73. 1 0. 34 108 0. 46 99. 1 0. 27 38. 3 0. 25 Sn 2. 97 0. 11 2. 80 0. 17 2. 83 0. 19 2. 79 0. 21 3. 04 0. 19 4. 13 0. 22 Th 15. 5 0. 14 15. 5 0. 10 15. 2 0. 10 13. 8 0. 08 14. 2 0. 10 20. 4 0. 20 Ti 4 489 0. 13 4 228 0. 14 4 408 0. 15 4 875 0. 23 11 016 0. 42 5 278 0. 16 Tl 0. 85 0. 33 0. 71 0. 17 0. 91 0. 12 0. 96 0. 19 0. 68 0. 24 1. 27 0. 37 U 3. 69 0. 19 3. 34 0. 10 3. 21 0. 10 3. 28 0. 18 3. 23 0. 06 4. 03 0. 22 V 111 0. 31 68. 0 0. 21 67. 9 0. 30 81. 6 0. 38 139 0. 35 117 0. 37 W 2. 21 0. 16 1. 89 0. 12 1. 90 0. 12 1. 79 0. 15 1. 88 0. 10 2. 13 0. 26 Y 23. 9 0. 15 25. 8 0. 14 27. 0 0. 11 25. 6 0. 14 26. 3 0. 14 27. 2 0. 23 Zn 78. 7 0. 17 55. 7 0. 16 72. 2 0. 19 78. 7 0. 21 93. 4 0. 26 101 0. 34 Zr 276 0. 22 324 0. 10 310 0. 10 302 0. 15 310 0. 12 274 0. 16 A l 2 O 3 14. 0 0. 09 13. 2 0. 10 14. 5 0. 09 16. 0 0. 16 15. 3 0. 16 17. 3 0. 10 CaO 0. 23 0. 21 0. 28 0. 34 0. 23 0. 33 0. 35 0. 43 0. 29 0. 41 0. 14 0. 31 Fe 2 O 3 5. 51 0. 15 4. 25 0. 16 4. 30 0. 21 4. 93 0. 29 9. 64 0. 39 6. 20 0. 22 K 2 O 2. 12 0. 23 2. 25 0. 20 2. 93 0. 10 2. 97 0. 16 1. 87 0. 31 2. 38 0. 22 MgO 0. 79 0. 28 0. 71 0. 26 0. 59 0. 21 0. 72 0. 34 0. 81 0. 24 0. 72 0. 27 Na 2 O 0. 29 0. 62 0. 47 0. 52 0. 67 0. 44 0. 80 0. 43 0. 72 0. 60 0. 16 0. 36 SiO 2 71. 3 0. 06 73. 2 0. 04 70. 8 0. 05 67. 0 0. 07 61. 7 0. 12 64. 8 0. 08 () : C10-2, Ag Au Cd Hg10-9,10-6

86 23 3 Table 3Sta tistica l param eter of top so il env ironm en ta l background in pla in reg ion s of Zhejiang (1 751) (1 124) (328) (276) (477) X X + 2S C V X X + 2S C V X X + 2S C V X X + 2S C V X X + 2S C V Ag 112 144 0. 14 105 168 0. 30 113 180 0. 30 96. 8 134 0. 19 99. 1 144 0. 23 A l 2 O 3 14. 3 15. 4 0. 04 12. 8 15. 9 0. 12 14. 7 15. 8 0. 04 15. 6 16. 6 0. 03 11. 2 12. 6 0. 07 A s 7. 59 10. 0 0. 16 6. 23 8. 53 0. 18 7. 98 11. 3 0. 21 6. 27 8. 41 0. 17 6. 49 9. 67 0. 25 Au 3. 01 4. 55 0. 25 2. 39 4. 41 0. 42 2. 44 3. 70 0. 26 2. 67 4. 21 0. 29 1. 86 3. 10 0. 33 B 73. 5 83. 1 0. 07 72. 4 85. 1 0. 09 64. 7 81. 6 0. 13 51. 9 83. 9 0. 31 30. 8 47. 3 0. 27 Ba 478 513 0. 04 458 552 0. 10 529 618 0. 08 516 558 0. 04 520 733 0. 20 Be 2. 44 2. 74 0. 06 2. 23 2. 87 0. 14 2. 69 2. 89 0. 04 2. 86 3. 22 0. 06 2. 15 2. 71 0. 13 B i 0. 41 0. 53 0. 15 0. 36 0. 56 0. 27 0. 45 0. 55 0. 11 0. 53 0. 63 0. 10 0. 32 0. 44 0. 18 B r 4. 34 6. 10 0. 20 5. 74 8. 20 0. 21 6. 71 9. 73 0. 22 5. 41 8. 71 0. 30 2. 30 2. 90 0. 13 C 1. 65 2. 45 0. 24 1. 55 2. 21 0. 22 1. 90 2. 58 0. 18 1. 51 2. 09 0. 19 1. 31 1. 89 0. 22 CaO 0. 97 1. 13 0. 09 0. 86 1. 16 0. 18 0. 74 1. 04 0. 20 0. 69 0. 87 0. 13 0. 36 0. 52 0. 21 Cd 152 206 0. 18 157 213 0. 18 159 232 0. 23 180 253 0. 20 194 274 0. 21 Ce 74. 7 88. 5 0. 09 74. 0 88. 4 0. 10 78. 9 89. 5 0. 07 92. 4 110 0. 09 79. 8 95. 4 0. 10 Cl 63. 6 83. 4 0. 16 84. 3 118 0. 20 91. 3 117 0. 14 97. 4 137 0. 20 64. 0 87. 7 0. 18 Co 13. 8 16. 9 0. 11 12. 2 16. 2 0. 16 15. 0 18. 1 0. 10 14. 7 19. 4 0. 16 7. 20 10. 9 0. 26 Cr 77. 6 92. 1 0. 09 68. 7 94. 4 0. 19 89. 1 100 0. 06 85. 8 102 0. 10 39. 1 60. 6 0. 28 Cu 30. 8 40. 8 0. 16 29. 2 48. 6 0. 33 33. 8 42. 0 0. 12 29. 9 41. 6 0. 20 18. 1 24. 8 0. 18 F 575 722 0. 13 528 662 0. 13 644 802 0. 12 662 805 0. 11 416 510 0. 11 Fe 2 O 3 4. 62 5. 50 0. 10 3. 95 4. 97 0. 13 5. 76 6. 64 0. 08 5. 33 6. 69 0. 13 3. 23 4. 33 0. 17 Ga 17. 0 21. 1 0. 12 15. 6 20. 7 0. 16 19. 3 21. 7 0. 06 21. 3 23. 4 0. 05 15. 1 18. 4 0. 11 Ge 1. 42 1. 66 0. 09 1. 39 1. 65 0. 09 1. 51 1. 69 0. 06 1. 51 1. 65 0. 05 1. 43 1. 65 0. 07 Hg 160 247 0. 27 110 232 0. 56 107 181 0. 35 144 251 0. 37 98. 2 150 0. 26 I 1. 84 2. 74 0. 24 1. 97 3. 01 0. 26 2. 46 4. 14 0. 34 2. 35 3. 35 0. 21 1. 11 1. 45 0. 16 K 2 O 2. 44 2. 66 0. 05 2. 32 2. 82 0. 11 2. 83 3. 05 0. 04 2. 89 3. 19 0. 05 2. 81 3. 63 0. 14 La 39. 5 47. 2 0. 10 39. 2 46. 5 0. 09 42. 0 48. 3 0. 07 46. 9 54. 3 0. 08 42. 9 51. 3 0. 10 L i 47. 5 56. 4 0. 09 37. 9 53. 3 0. 20 55. 8 63. 1 0. 07 55. 1 66. 8 0. 11 32. 8 40. 6 0. 12 MgO 1. 52 1. 78 0. 08 1. 55 2. 27 0. 23 1. 57 2. 45 0. 28 1. 34 1. 94 0. 23 0. 56 0. 80 0. 22 Mn 609 827 0. 18 491 656 0. 17 769 1 119 0. 23 753 1 029 0. 18 377 517 0. 19 Mo 0. 58 0. 74 0. 14 0. 54 0. 80 0. 23 0. 63 0. 83 0. 16 0. 72 1. 00 0. 19 1. 03 1. 43 0. 20 N 1. 46 2. 11 0. 22 1. 43 2. 54 0. 39 1. 69 2. 24 0. 16 1. 40 2. 05 0. 23 1. 20 1. 64 0. 18 Na 2 O 1. 45 1. 69 0. 08 1. 55 2. 09 0. 17 1. 07 1. 27 0. 09 1. 00 1. 18 0. 09 0. 90 1. 38 0. 27 Nb 16. 8 20. 1 0. 10 16. 5 20. 1 0. 11 18. 4 19. 8 0. 04 19. 4 20. 7 0. 03 21. 7 25. 6 0. 09 N i 32. 4 41. 1 0. 13 26. 3 32. 0 0. 11 38. 3 46. 5 0. 11 35. 7 45. 4 0. 14 12. 4 18. 5 0. 24 P 763 1 039 0. 18 843 1 173 0. 20 784 1 070 0. 18 662 880 0. 16 576 800 0. 19 Pb 30. 4 38. 2 0. 13 32. 5 53. 1 0. 32 34. 2 42. 4 0. 12 41. 1 51. 2 0. 12 35. 1 42. 4 0. 10 Rb 117 134 0. 07 106 143 0. 18 136 147 0. 04 145 160 0. 05 120 153 0. 14 S 286 432 0. 26 320 536 0. 34 353 524 0. 24 315 441 0. 20 286 433 0. 26 Sb 0. 59 0. 75 0. 14 0. 62 0. 84 0. 18 0. 71 0. 97 0. 19 0. 70 0. 94 0. 18 0. 74 1. 08 0. 23 Sc 11. 6 14. 5 0. 13 10. 5 12. 5 0. 10 12. 6 14. 7 0. 08 12. 4 15. 7 0. 13 7. 40 9. 08 0. 11 Se 0. 30 0. 42 0. 19 0. 29 0. 49 0. 36 0. 25 0. 37 0. 24 0. 27 0. 41 0. 27 0. 28 0. 40 0. 23 SiO 2 67. 9 71. 2 0. 02 69. 0 72. 9 0. 03 65. 3 70. 7 0. 04 65. 1 69. 6 0. 03 77. 2 80. 0 0. 02 Sn 9. 10 13. 8 0. 26 9. 21 19. 0 0. 53 4. 47 6. 45 0. 22 5. 38 9. 00 0. 34 7. 46 12. 6 0. 34 Sr 112 126 0. 06 123 163 0. 16 112 121 0. 04 105 120 0. 07 73. 5 119 0. 31 Th 13. 4 16. 0 0. 10 12. 6 15. 5 0. 12 13. 6 15. 3 0. 06 15. 7 17. 8 0. 07 15. 6 19. 1 0. 11 Ti 4. 35 4. 79 0. 05 4. 16 4. 73 0. 07 5. 21 5. 40 0. 02 5. 04 5. 41 0. 04 4. 09 5. 30 0. 15 Tl 0. 67 0. 87 0. 14 0. 63 0. 87 0. 18 0. 79 0. 95 0. 10 0. 90 1. 02 0. 06 0. 79 1. 05 0. 17 U 2. 52 3. 06 0. 11 2. 45 3. 13 0. 14 2. 70 3. 14 0. 08 2. 98 3. 42 0. 08 3. 47 4. 17 0. 10 V 99. 4 114 0. 07 85 112 0. 16 112 122 0. 05 105 124 0. 09 53. 5 73. 4 0. 19 W 1. 79 2. 25 0. 13 1. 72 2. 36 0. 18 1. 93 2. 23 0. 08 1. 98 2. 26 0. 07 1. 87 2. 25 0. 10 Y 26. 5 32. 2 0. 11 25. 6 29. 6 0. 08 29. 4 30. 9 0. 03 30. 5 33. 3 0. 05 26. 1 31. 3 0. 10 Zn 92. 7 110 0. 10 89. 9 128 0. 21 106 124 0. 08 116 130 0. 06 72. 1 95. 3 0. 16 Zr 240 265 0. 05 252 308 0. 11 199 219 0. 05 205 230 0. 06 340 396 0. 08 () : C10-2, N Ti10-3, Ag Au Cd Hg10-9,10-6

2 : 87 3. 3 2 3, C N P S Se Sn Ag B r Cd Hg Pb 4,( CdHgPb ),, (), 4 Table 4Enr ichm en t coeff ic ien t of elem en ts in top so ils of the survey area s / ( mgkg - 1 ) / ( mgkg - 1 ) / ( mgkg - 1 ) R 1) R R Hg 0. 042 0. 140 3. 55 0. 051 0. 090 1. 93 0. 041 0. 070 1. 71 Cd 0. 105 0. 152 1. 54 0. 134 0. 169 1. 37 0. 128 0. 177 1. 38 Cr 83 71 0. 91 62. 8 52. 1 0. 90 45 38 0. 84 Pb 24 31 1. 38 33. 5 37. 7 1. 22 28 32 1. 14 Cr 23 29 1. 34 19. 5 22. 7 1. 27 15 17 1. 13 Zn 81 90 1. 18 91. 9 93. 5 1. 11 61 68 1. 11 N i 35 30 0. 91 26. 5 10. 7 0. 44 13 10 0. 77 A s 6 7 1. 24 6. 76 5. 69 0. 92 7 6 0. 85 150200 cm,020 cm; / TiO 2 ) 1) R = ( / TiO 2 ) / ( 3. 4 5,, Cd,Hg N i Cr Zn Cu GB 156181995 : Cd Hg Pb, A s, N i,4cr ; Zn Cu,,, ( ), 5 Table 5H ighest background va lues of heavy m eta ls in ma2 jor pla in s of Zhejiang mgkg - 1 Cd Hg Pb A s N i Cr Zn Cu 0. 206 0. 247 38. 2 10. 0 41. 1 92. 1 110 40. 8 0. 213 0. 232 53. 1 8. 5 32. 0 94. 4 128 48. 6 0. 232 0. 181 42. 4 11. 3 46. 5 100. 0 124 42. 0 0. 253 0. 251 51. 2 8. 4 45. 4 102. 0 130 41. 6 0. 274 0. 150 42. 4 9. 7 18. 5 60. 6 95 24. 8 1) 0. 20 0. 15 35 15 40 90 100 35 1) GB 156181995 4 4. 1 3,,,,, ( ),,,

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