Bioavailable arsenic and amorphous iron oxides provide reliable predictions for arsenic transfer in soil-wheat system
文献类型：期刊论文
| 作者 | Chen, Peng ; Zhang, Hong-Mei; Yao, Bao-Min; Chen, Song-Can; Sun, Guo-Xin; Zhu, Yong-Guan
|
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2020-02-05 |
| 卷号 | 383页码:1-10 |
| 关键词 | Wheat Bioavailable arsenic (As) Transfer factor Prediction models Amorphous iron oxides |
| ISSN号 | 0304-3894 |
| 英文摘要 | The application of current soil quality standards based on total arsenic (As) fails to assess the ecological risks of soil arsenic or to ensure the safety of crops and foods. In this study, bioavailable arsenic instead of total arsenic was applied to improve predictive models for arsenic transfer from soil to wheat (Trianon awgidutn L.). The stepwise multiple-linear regression analysis showed that bioavailable arsenic and amorphous iron oxides (Fe-OX) were the two most important factors contributing to arsenic accumulation in wheat grain, with the explained percentage of variation being up to 82%. Compared with the bioavailable arsenic extracted by NH4H2PO4, bioavailable arsenic extracted by HNO3 from soils generated better predictions of the amount of arsenic in grain. The best reliable model was log[As-grain] = 0.917 log[HNO3-As] - 0.452 log[Fe-OX] - 1.507 (R-2 = 0.82, P < 0.001). Consistently, bioavailable arsenic and Fe-OX were also the key factors to predict arsenic accumulation in wheat straw, leaves and spikes. Our prediction models was successfully verified for three independent soils. Our results highlight the role of soil bioavailable heavy metals in predicting their transfer in soil-plant systems and can be used to improve existing Chinese soil quality standards. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44229]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen, Peng,Zhang, Hong-Mei,Yao, Bao-Min,et al. Bioavailable arsenic and amorphous iron oxides provide reliable predictions for arsenic transfer in soil-wheat system[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,383:1-10. |
| APA | Chen, Peng,Zhang, Hong-Mei,Yao, Bao-Min,Chen, Song-Can,Sun, Guo-Xin,&Zhu, Yong-Guan.(2020).Bioavailable arsenic and amorphous iron oxides provide reliable predictions for arsenic transfer in soil-wheat system.JOURNAL OF HAZARDOUS MATERIALS,383,1-10. |
| MLA | Chen, Peng,et al."Bioavailable arsenic and amorphous iron oxides provide reliable predictions for arsenic transfer in soil-wheat system".JOURNAL OF HAZARDOUS MATERIALS 383(2020):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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