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首页> 外文会议>International Conference on Energy, Environment and Sustainable Development >Baseline concentrations of trace metals in grassland topsoils from West Jilin province, Northeast China
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Baseline concentrations of trace metals in grassland topsoils from West Jilin province, Northeast China

机译：中国西吉林省西吉林省草原拓扑石痕量金属基线浓度

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The objective of this study was to determine the baseline concentrations of trace elements in grassland topsoils from 155 soil sampling sites in West Jilin province, Northeast China, to establish the relationships between the trace metal contents and soil physicochemical properties and major oxide contents and among trace metal concentrations themselves, and to identify the possible sources of trace element in soils. The baseline concentrations of trace elements(mg/kg) were: As 3.12-14.18, B 16.17-49.08, Cd 0.037-0.127, Co 0.96-15.28, Cr 18.87-60.83, Cu 10.81-24.75, Hg 0.004-0.035, Mn 171.25-657.87, Mo 0.08-1.15, Ni 6.79-30, Pb 12.58-26.08, Se 0.03-0.36, and Zn 18.93-61.03. The upper baseline limits of these elements were all less than the Chinese Environmental Quality Standard for Soils, the Dutch Intervention Values for Soils, implying that trace element contents in the studied soils were of the safety levels. Fe_2O_3 and Al_2O_3 had stronger correlations with most trace elements than other oxides, and Co, Cr, Cu, Mn, Ni were highly correlated one another. Three types of geochemical associations were distinguished from this study: the first association involving As, Co, Cr, Cu, Mn, Mo, Ni, Pb, Zn, Al_2O_3 and Fe_2O_3 was mainly associated with Al, Fe-Mn oxides and/or with the Al-bearing clay minerals, suggesting that the trace elements were mainly derived from lithogenic and pedogenic processes; the second association including Se, Hg, Cd, CaO and organic carbon was mainly associated with organic matter and calcium oxides, showing that Se, Hg and Cd were mainly contributed by anthropogenic sources; the third association containing B, Na_2O, K_2O, MgO, pH, and electrical conductivity was mainly associated salinization processes of soils, implying that alkaline pH and high Na contents would enhance B concentration of soils.
机译：本研究的目的是确定来自中国西吉林省西吉林省西吉林省155个土壤采样地点的草原表土中微量元素的基线浓度，建立痕量金属含量和土壤理化性质和主要氧化物含量与痕量含量之间的关系金属浓度本身，并鉴定土壤中的痕量元素的可能源。微量元素（Mg / kg）的基线浓度为：As 3.12-14.18，B 16.17-49.08，CD 0.037-0.127，CO 0.96-15.8，Cr 18.87-60.83，Cu 10.81-24.75，Hg 0.004-0.035，MN 171.25 -657.87，MO 0.08-1.15，NI 6.79-30，PB 12.58-26.08，SE 0.03-0.36和Zn 18.93-61.03。这些元素的上基线限制均小于中国的土壤环境质量标准，荷兰介入的土壤介入价值观，暗示所研究的土壤中的痕量元素内容是安全水平。 Fe_2O_3和AL_2O_3与大多数微量元素具有比除其他氧化物的更强的相关性，并且CO，Cr，Cu，Mn，Ni彼此高度相关。从该研究区分了三种类型的地球化学关联：涉及作为，Cr，Cr，Cu，Mn，Mo，Ni，Pb，Zn，Al_2O_3和Fe_2O_3的第一关联主要与Al，Fe-Mn氧化物和/或与/或与/或Al承载粘土矿物质，表明微量元素主要来自岩性和基础工艺;包括Se，Hg，Cd，CaO和有机碳在内的第二个关联主要与有机物质和氧化钙有关，显示SE，Hg和Cd主要是由人为源的贡献;含有B，Na_2O，K_2O，MgO，pH和电导率的第三个关联主要是土壤的盐渍化过程，这意味着碱性pH和高NA含量会增强B浓度的土壤。

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