Effects of exogenous phosphates on speciation and bioavailability of arsenic and cadmium in farmland soils
文献类型：期刊论文
| 作者 | Zhang, Meng; Wang, Xuemei; Wei, Chaoyang2; Wang, Menglu; Han, Wei; Yuan, Zhuang; Ji, Hongbing |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2023-04-01 |
| 卷号 | N/A |
| 关键词 | Soil pH Available P Stability Bioavailability Synchrotron radiation |
| DOI | 10.1007/s11368-023-03448-4 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | Purpose Soils contaminated with As and Cd complex pose a serious threat to human health and the ecological environment. Phosphorus is an essential nutrient element in farmland soil, and it is of great significance to study the effects of different types of phosphate on the compound pollution of As and Cd in soil.Methods Four types of phosphates, including aluminum phosphate (AlPO4), ferric phosphate (FePO4), calcium phosphate (Ca-3(PO4)(2)), and potassium dihydrogen phosphate (KH2PO4), were selected to explore the effect of different phosphates on the stability and bioavailability of soil As and Cd by changing soil pH and the concentration of available P. X-ray absorption near edge structure (XANES) spectroscopy was used to determine P speciation in soil samples.Results The results show that all four phosphates can improve the stability of Cd in soil, but the concentration of unstable As in soil increased after applying P because of the competitive effect. Potassium dihydrogen phosphate and ferric phosphate remarkably affected As and Cd. At pH 6.75, both As and Cd in soil can reach a relatively stable state. With the increase in available P in soil, the bioavailability of Cd decreased linearly, while that of As increased exponentially. The fitting curve shows that the available P content of 450 mg/kg can be used as the critical point to control the relative stability of As and Cd in the sampled soil.Conclusion Phosphate can alter the stability of As and Cd by changing soil pH and available P content. |
| WOS关键词 | HEAVY-METALS ; WATER MANAGEMENT ; PHOSPHORUS ; AVAILABILITY ; ACCUMULATION ; PH ; ADSORPTION ; PHYTOAVAILABILITY ; IMMOBILIZATION ; CONTAMINATION |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| WOS记录号 | WOS:000926428700001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200757]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 2.Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing Key Lab Resource Oriented Treatment Ind Po, Int Sci & Technol Cooperat Base Environm & Energy, Xueyuan Rd 30, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Meng,Wang, Xuemei,Wei, Chaoyang,et al. Effects of exogenous phosphates on speciation and bioavailability of arsenic and cadmium in farmland soils[J]. JOURNAL OF SOILS AND SEDIMENTS,2023,N/A. |
| APA | Zhang, Meng.,Wang, Xuemei.,Wei, Chaoyang.,Wang, Menglu.,Han, Wei.,...&Ji, Hongbing.(2023).Effects of exogenous phosphates on speciation and bioavailability of arsenic and cadmium in farmland soils.JOURNAL OF SOILS AND SEDIMENTS,N/A. |
| MLA | Zhang, Meng,et al."Effects of exogenous phosphates on speciation and bioavailability of arsenic and cadmium in farmland soils".JOURNAL OF SOILS AND SEDIMENTS N/A(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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