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Background Estimation and Distribution of Anthropogenic Input of Cadmium in Arable Land Soil

文献类型： 外文期刊

作者： Wang, Dengfeng 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Danzhou 571737, Hainan, Peoples R China

关键词： Cadmium;Background;Iterative-2σ technique;95 % upper confidence limit;Hainan.

期刊名称：ASIAN JOURNAL OF CHEMISTRY （ 影响因子：0.355； 五年影响因子：0.293 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Obtaining accurate cadmium background concentrations in arable land soil is important because it can identify the anthropogenic Cd input distribution and realistically set the guiding level for remediation. In this study, four methods were applied, including the Iterative-2σ technique, 95 % upper confidence limit (UCL0.95), accumulative frequency plot and GM+2GSD (geometric mean + 2 x geometric standard) in order to estimate the Cd background concentrations in Hainan Island's arable land soil. In a comparative analysis, using the GM+2GSD method is ideal for estimating the background Cd concentrations since it does not consider the hypothetical distribution functions like UCL_(0.95). A concentration of 75 μg kg~(-1) was accepted as the Cd background concentration in arable land soils. The distribution of anthropogenic Cd inputs was obtained by subtracting the background concentrations from an existing spatial distribution of Cd. Rapid urbanization and excessive application of chemical fertilizers and pesticides have been attributed to the anthropogenic Cd input of Hainan's arable land soil.

  • 相关文献

[1]Distribution of anthropogenic cadmium and arsenic in arable land soils of Hainan, China. Wang, Dengfeng,Dang, Zhiguo,Feng, Huande,Wang, Rongxiang.

[2]Exposure to cadmium causes declines in growth and photosynthesis in the endangered aquatic fern (Ceratopteris pteridoides). Deng, Guang,Li, Ming,Yin, Liyan,Deng, Guang,Li, Ming,Li, Hong,Li, Hong,Li, Wei. 2014

[3]Variations of cadmium tolerance and accumulation among 39 Salix clones: implications for phytoextraction. Yang, Weidong,Zhao, Fengliang,Zhang, Xincheng,Ding, Zheli,Wang, Yuyan,Zhu, Zhiqiang,Yang, Xiaoe,Zhao, Fengliang,Ding, Zheli,Zhu, Zhiqiang. 2015

[4]Fractions distribution of arsenic and cadmium in arable land soils in vicinity of mining area. Wang, Dengfeng,Feng, Huande,Huang, Haijie,Wang, Tingzhong,Zeng, Di. 2016

[5]Distribution of selenium and cadmium in soil-rice system of selenium-rich area in Hainan, China. Wang, Dengfeng,Wei, Zhiyuan,Qi, Zhiping,Tang, Shumei. 2014

[6]Research on the degradation of tropical arable land soil: Part III the distribution of Cd in Western part of Hainan Island. Wang, Dengfeng,Wei, Zhiyuan,Qi, Zhiping. 2013

[7]The construction of an engineered bacterium to remove cadmium from wastewater. Chang, S.,Shu, H.,Chang, S.,Shu, H.,Shu, H..

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