Selenium speciation in seleniferous agricultural soils under different cropping systems using sequential extraction and X-ray absorption spectroscopy
文献类型：期刊论文
| ; | |
| 作者 | Qin, HB; Zhu, JM; Lin, ZQ; Xu, WP; Tan, DC; Zheng, LR ; Takahashi, Y; Zheng LR(郑黎荣)
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| 刊名 | ENVIRONMENTAL POLLUTION
 ; ENVIRONMENTAL POLLUTION
|
| 出版日期 | 2017 ; 2017 |
| 卷号 | 225页码:361-369 |
| 关键词 | Selenium speciation Selenium speciation Fractionation Sequential extraction X-ray absorption near-edge structure (XANES) Seleniferous agricultural soils Fractionation Sequential extraction X-ray absorption near-edge structure (XANES) Seleniferous agricultural soils |
| ISSN号 | 0269-7491 ; 0269-7491 |
| DOI | 10.1016/j.envpol.2017.02.062 ; 10.1016/j.envpol.2017.02.062 |
| 文献子类 | Article ; Article |
| 英文摘要 | Selenium (Se) speciation in soil is critically important for understanding the solubility, mobility, bioavailability, and toxicity of Se in the environment. In this study, Se fractionation and chemical speciation in agricultural soils from seleniferous areas were investigated using the elaborate sequential extraction and X-ray absorption near-edge structure (XANES) spectroscopy. The speciation results quantified by XANES technique generally agreed with those obtained by sequential extraction, and the combination of both approaches can reliably characterize Se speciation in soils. Results showed that dominant organic Se (56-81% of the total Se) and lesser Se(IV) (19-44%) were observed in seleniferous agricultural soils. A significant decrease in the proportion of organic Se to the total Se was found in different types of soil, i.e., paddy soil (81%) > uncultivated soil (69-73%) > upland soil (56-63%), while that of Se(IV) presented an inverse tendency. This suggests that Se speciation in agricultural soils can be significantly influenced by different cropping systems. Organic Se in seleniferous agricultural soils was probably derived from plant litter, which provides a significant insight for phytoremediation in Se-laden ecosystems and biofortification in Se-deficient areas. Furthermore, elevated organic Se in soils could result in higher Se accumulation in crops and further potential chronic Se toxicity to local residents in seleniferous areas. (C) 2017 Elsevier Ltd. All rights reserved.; Selenium (Se) speciation in soil is critically important for understanding the solubility, mobility, bioavailability, and toxicity of Se in the environment. In this study, Se fractionation and chemical speciation in agricultural soils from seleniferous areas were investigated using the elaborate sequential extraction and X-ray absorption near-edge structure (XANES) spectroscopy. The speciation results quantified by XANES technique generally agreed with those obtained by sequential extraction, and the combination of both approaches can reliably characterize Se speciation in soils. Results showed that dominant organic Se (56-81% of the total Se) and lesser Se(IV) (19-44%) were observed in seleniferous agricultural soils. A significant decrease in the proportion of organic Se to the total Se was found in different types of soil, i.e., paddy soil (81%) > uncultivated soil (69-73%) > upland soil (56-63%), while that of Se(IV) presented an inverse tendency. This suggests that Se speciation in agricultural soils can be significantly influenced by different cropping systems. Organic Se in seleniferous agricultural soils was probably derived from plant litter, which provides a significant insight for phytoremediation in Se-laden ecosystems and biofortification in Se-deficient areas. Furthermore, elevated organic Se in soils could result in higher Se accumulation in crops and further potential chronic Se toxicity to local residents in seleniferous areas. (C) 2017 Elsevier Ltd. All rights reserved. |
| 电子版国际标准刊号 | 1873-6424 ; 1873-6424 |
| WOS关键词 | ORGANIC-MATTER ; ORGANIC-MATTER ; CHINA ; SEDIMENTS ; YUTANGBA ; WATER ; VOLATILIZATION ; MINERALS ; AREAS ; RICE ; PHYTOREMEDIATION ; CHINA ; SEDIMENTS ; YUTANGBA ; WATER ; VOLATILIZATION ; MINERALS ; AREAS ; RICE ; PHYTOREMEDIATION |
| WOS研究方向 | Environmental Sciences & Ecology ; Environmental Sciences & Ecology |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000401679200039 ; WOS:000401679200039 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285205]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Qin, HB,Zhu, JM,Lin, ZQ,et al. Selenium speciation in seleniferous agricultural soils under different cropping systems using sequential extraction and X-ray absorption spectroscopy, Selenium speciation in seleniferous agricultural soils under different cropping systems using sequential extraction and X-ray absorption spectroscopy[J]. ENVIRONMENTAL POLLUTION, ENVIRONMENTAL POLLUTION,2017, 2017,225, 225:361-369, 361-369. |
| APA | Qin, HB.,Zhu, JM.,Lin, ZQ.,Xu, WP.,Tan, DC.,...&郑黎荣.(2017).Selenium speciation in seleniferous agricultural soils under different cropping systems using sequential extraction and X-ray absorption spectroscopy.ENVIRONMENTAL POLLUTION,225,361-369. |
| MLA | Qin, HB,et al."Selenium speciation in seleniferous agricultural soils under different cropping systems using sequential extraction and X-ray absorption spectroscopy".ENVIRONMENTAL POLLUTION 225(2017):361-369. |
入库方式： OAI收割
来源：高能物理研究所
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