Sterckeman,T., Douay,F., Baize,D., Fourrier,H., Proix,N. and Schvartz, C.(2004): Factors affecting trace element concentrations in soils developed on recent marine deposits from northern France. Applied Geochemistry, 19, 89-103.

『フランス北部からの現世の海成堆積物に発達した土壌中の微量元素濃度に影響を与える要因』


Abstract
 Total concentrations of 18 trace and 2 major elements (Al, Fe) as well as physico-chemical characteristics (texture, organic C, pH, CaCO3, CEC) were measured in cultivated soil samples (fraction <2 mm) from 23 surface and 38 deeper horizons developed in recent marine deposits. Correlations between trace element contents and other soil parameters were compared in order to reveal those soil factors affecting the trace element distributions. Whatever the horizon type, Co, Cr, In and V are almost exclusively associated with the fine (<20μm) mineral fraction and do not show a direct association with organic matter. Bismuth, Sn, Tl and Zn also show a close association with the fine mineral fraction of the deep horizons, but seem to be partly associated with organic matter in the ploughed horizons. In the deep horizons, the association of Cd, Cu and Pb with the fine mineral fraction is clearly less close, while these elements appear to be associated with organic matter in the ploughed horizons. The Mn content increases with that of the fine mineral fraction up to a certain point. Arsenic, Mo and Sb contents are poorly correlated with the fine solid phase of the deep horizons. The distribution of Hg does not appear to be associated with any specific soil component. The ploughed horizons are highly enriched with Pb, Cu, Cd, Hg and Se (+84% to +225%) and moderately enriched with Tl, Mn, Sb, Bi, Sn and Zn (+7% to +48%). There is no surface enrichment of As, Co, Cr, In, Mo, Ni and V. It is possible to model most of the trace element distributions with pedotransfer functions of the physico-chemical characteristics.』

『物理化学的特性(組織、有機C、pH、CaCO3、CEC)以外に18の微量元素と2つの主要元素(Al、Fe)の全濃度が、現世の海成堆積物に発達した23の表面層準と38の深部層準から掘り出した土壌試料(画分<2mm)に対して測定された。微量元素含有量と他の土壌パラメーター間の相関が、微量元素分布に影響を与えるこれらの土壌因子を明らかにするために比較された。どちら層準でも、Co、Cr、In、Vはほとんど全く細粒の(<20μm)鉱物画分のみに伴い、有機物と直接の関連は示さない。ビスマス、Sn、Tl、Znも深部層準の細粒の鉱物画分と密接な関連を示すが、掘り起こされた層準の有機物とある程度は関連しているように思われる。深部層準では、細粒の鉱物画分とCd、Cu、Pbの関連は明らかに密接ではないが、一方これらの元素は掘り起こされた層準の有機物と関連するように見える。Mn含有量はある点まで細粒の鉱物画分の量とともに増加する。砒素、Mo、Sb含有量は、深部層準の細粒の固相との相関は乏しい。掘り起こされた層準はPb、Cu、Cd、Hg、Seに非常に富み(+84%〜+225%)、Tl、Mn、Sb、Bi、Sn、Znに適度に富む(+7%〜+48%)。As、Co、Cr、In、Mo、Ni、Vは表面では富化されていない。微量元素の分布の大部分は、土壌の移動を伴う働きの物理化学的特性によってモデル化することができる。』

1. Introduction
2. Material and methods
 2.1. Soils
 2.2. Sampling
 2.3. Analyses
 2.4. Data processing
3. Results
 3.1. Frequency distributions
 3.2. Soil characteristics
 3.3. Trace element contents
4. Discussion
 4.1. Effect of mineral phases on the trace elements distributions
 4.2. Effect of organic matter
 4.3. Enrichment of the surface horizons
 4.4. Role of the biogeochemical cycle and contamination
 4.5. Effect of pH
 4.6. Effect of chemical properties of trace elements
 4.7. Pedotransfer functions
5. Conclusions
Acknowledgements
Appendix
References


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