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External inorganic N source enhances the uptake of As species in garland chrysanthemum (C. coronarium) amended with chicken manure bearing roxarsone and its metabolites

文献类型： 外文期刊

作者： Yao, Lixian 1 ; Huang, Lianxi 1 ; He, Zhaohuan 1 ; Zhou, Changmin 1 ; Li, Guoliang 1 ; Yang, Baomei 2 ; Deng, Xiancai;

作者机构： 1.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangdong Key Lab Nutrient Cycling & Farmland Con, Key Lab Plant Nutr & Fertilizer South Reg,Minist, Guangzhou 510640, Guangdong, Peoples R China

2.Guangdong Acad

关键词： Roxarsone;Animal manure;Arsenic species;Nitrogen form;Soil pH

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）

ISSN： 0304-3894

年卷期： 2013 年 254 卷

页码：

收录情况： SCI

摘要： Roxarsone (ROX), a widely used feed organoarsenic additive, is excreted as itself and its metabolites in animal manure. Animal manure is commonly applied with N fertilizer to meet the N demand of crop. We investigated the accumulation of As species in garland chrysanthemum plants fertilized with chicken manure (CM) bearing ROX and its metabolites, combined with different inorganic N sources (NH4+, NO3- and urea), respectively. The change of pH, N forms and As species in soils was examined as well. The results show that As(V), As(III) and dimethylarsinic acid (DMA) were detectable in soils, and conversions between As species were affected by three inorganic N sources, irrespective of N form and soil pH. As(III) was the sole As species in garland chrysanthemum shoots, and As(III) and As(V) could be detected in roots. Urea. superior to NH4+, significantly enhanced the uptake of As species in plants by promoting plant growth, while NO3- slightly reduced the As accumulation due to decreased biomass. As(III) was the dominant As compound (86.9-89.7%) in plants. Therefore, inorganic N fertilizers may inadvertently increase the risk of As contamination in plant from ROX via the way ROX -> chicken -> CM -> soil -> crop. (c) 2013 Elsevier B.V. All rights reserved.

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[6]Phosphate enhances uptake of As species in garland chrysanthemum (C-coronarium) applied with chicken manure bearing roxarsone and its metabolites. Deng, Xiancai,Huang, Lianxi,He, Zhaohuan,Zhou, Changming,Li, Guoliang.

[7]Soil calcium significantly promotes uptake of inorganic arsenic by garland chrysanthemum (ChrysanthemumL coronarium) fertilized with chicken manure bearing roxarsone and its metabolites. Bai, Cuihua,Huang, Lianxi,He, Zhaohuan,Zhou, Changmin.

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