风成砂覆盖区地电化学提取前后土壤中元素赋存状态变化研究
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						       		孙彬彬, 曾道明, 刘占元, 周国华, 贺灵
						  	
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				Variation of modes of occurrence of elements in soil before and after the geo-electrochemical extraction in eolian sand covered area
			
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						       		Bin-Bin SUN, Dao-Ming ZENG, Zhan-Yuan LIU, Guo-Hua ZHOU, Ling HE
						  	
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		表2 电提取前后土壤中各元素相态含量均值及比值统计(n=43)
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			   | 元素相态 |  Au |  Ag |  As |  Bi |  Cd |  Co |  Cr |  Cu |  La |  Mo |  Ni |  Pb |  Sb |  Se |  Ti |  U |  Zn |  Al |  Fe |  K |       | 水溶态 |  前 |  0.063 |  0.274 |  0.195 |  0.304 |  1.59 |  0.006 |  0.186 |  0.043 |  0.005 |  6.83 |  0.079 |  0.074 |  1.94 |  0.008 |  0.370 |  6.77 |  0.052 |  8.88 |  29.3 |  8.05 |      |  后 |  0.077 |  0.507 |  0.131 |  0.472 |  2.07 |  0.006 |  0.196 |  0.055 |  0.004 |  6.70 |  0.038 |  0.095 |  3.09 |  0.008 |  0.312 |  4.76 |  0.127 |  9.35 |  31.8 |  8.65 |      |  比 |  1.23 |  1.85 |  0.67 |  1.55 |  1.30 |  1.04 |  1.05 |  1.28 |  0.80 |  0.98 |  0.48 |  1.28 |  1.59 |  1.01 |  0.84 |  0.70 |  2.43 |  1.05 |  1.09 |  1.07 |     离子交 换态 |  前 |  0.080 |  0.758 |  0.073 |  0.434 |  5.21 |  0.116 |  0.264 |  0.101 |  0.011 |  11.0 |  0.145 |  0.040 |  1.30 |  0.005 |  0.215 |  7.68 |  0.196 |  10.7 |  4.89 |  95.0 |      |  后 |  0.039 |  1.08 |  0.054 |  0.429 |  6.53 |  0.163 |  0.378 |  0.170 |  0.011 |  17.3 |  0.222 |  0.044 |  2.91 |  0.004 |  0.270 |  12.7 |  0.219 |  20.2 |  12.3 |  119 |      |  比 |  0.49 |  1.43 |  0.74 |  0.99 |  1.26 |  1.41 |  1.43 |  1.68 |  0.93 |  1.57 |  1.54 |  1.12 |  2.24 |  0.87 |  1.25 |  1.66 |  1.11 |  1.89 |  2.51 |  1.26 |     碳酸盐 结合态 |  前 |  0.067 |  0.378 |  0.057 |  2.28 |  8.82 |  0.036 |  0.607 |  0.168 |  0.383 |  12.6 |  0.272 |  0.339 |  3.32 |  0.003 |  0.528 |  18.2 |  10.0 |  12.9 |  42.5 |  244 |      |  后 |  0.073 |  0.434 |  0.042 |  2.95 |  13.9 |  0.048 |  0.752 |  0.214 |  0.579 |  13.8 |  0.377 |  0.465 |  4.50 |  0.002 |  0.793 |  28.5 |  6.97 |  19.4 |  10.5 |  278 |      |  比 |  1.10 |  1.15 |  0.75 |  1.29 |  1.58 |  1.35 |  1.24 |  1.27 |  1.51 |  1.09 |  1.39 |  1.37 |  1.35 |  0.70 |  1.50 |  1.56 |  0.69 |  1.50 |  0.25 |  1.14 |     腐殖酸 结合态 |  前 |  0.206 |  0.654 |  0.127 |  6.03 |  7.33 |  0.623 |  0.285 |  0.619 |  2.30 |  37.5 |  0.546 |  0.78 |  15.2 |  0.003 |  50.4 |  42.3 |  3.72 |  220 |  206 |  67.4 |      |  后 |  0.193 |  1.05 |  0.131 |  7.51 |  10.6 |  0.745 |  0.228 |  1.10 |  2.79 |  25.7 |  0.744 |  1.1 |  22.2 |  0.013 |  54.4 |  52.8 |  5.89 |  220 |  202 |  67.0 |      |  比 |  0.94 |  1.61 |  1.03 |  1.25 |  1.44 |  1.20 |  0.80 |  1.78 |  1.21 |  0.68 |  1.36 |  1.42 |  1.46 |  4.18 |  1.08 |  1.25 |  1.58 |  1.00 |  0.98 |  1.00 |     铁锰氧 化物结 合态 |  前 |  0.120 |  8.28 |  0.339 |  6.11 |  7.30 |  1.21 |  1.21 |  0.500 |  1.63 |  5.04 |  2.21 |  2.25 |  3.93 |  0.012 |  6.46 |  20.6 |  2.00 |  1342 |  573 |  164 |      |  后 |  0.082 |  13.3 |  0.291 |  8.56 |  12.0 |  1.58 |  1.39 |  0.715 |  2.09 |  11.4 |  2.99 |  3.33 |  5.20 |  0.011 |  7.63 |  35.6 |  3.13 |  1497 |  682 |  183 |      |  比 |  0.68 |  1.60 |  0.86 |  1.40 |  1.65 |  1.30 |  1.15 |  1.43 |  1.28 |  2.27 |  1.35 |  1.48 |  1.32 |  0.89 |  1.18 |  1.73 |  1.56 |  1.11 |  1.19 |  1.12 |     强有机 结合态 |  前 |  0.467 |  4.00 |  0.074 |  11.9 |  3.79 |  0.488 |  2.27 |  0.690 |  0.601 |  38.1 |  1.48 |  1.15 |  13.7 |  0.023 |  40.7 |  34.4 |  1.40 |  966 |  530 |  183 |      |  后 |  0.391 |  6.74 |  0.053 |  17.5 |  5.01 |  0.561 |  2.25 |  0.819 |  0.725 |  36.9 |  1.66 |  1.36 |  11.9 |  0.021 |  40.8 |  38.2 |  2.10 |  926 |  457 |  176 |      |  比 |  0.84 |  1.69 |  0.72 |  1.47 |  1.32 |  1.15 |  0.99 |  1.19 |  1.21 |  0.97 |  1.12 |  1.18 |  0.87 |  0.89 |  1.00 |  1.11 |  1.50 |  0.96 |  0.86 |  0.96 |     | 残渣态 |  前 |  10.4 |  48.2 |  6.49 |  145 |  42.1 |  2.37 |  21.7 |  6.71 |  11.7 |  269 |  6.42 |  13.5 |  443 |  0.052 |  2235 |  920 |  14.5 |  47096 |  12664 |  20426 |      |  后 |  9.27 |  61.7 |  7.33 |  181 |  48.9 |  2.58 |  21.7 |  7.81 |  12.5 |  328 |  7.08 |  15.1 |  509 |  0.061 |  2282 |  1026 |  19.4 |  45855 |  12720 |  20382 |      |  比 |  0.89 |  1.28 |  1.13 |  1.25 |  1.16 |  1.09 |  1.00 |  1.17 |  1.07 |  1.22 |  1.10 |  1.12 |  1.15 |  1.17 |  1.02 |  1.12 |  1.34 |  0.97 |  1.00 |  1.00 |      
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