Using chemical fractionation and speciation to describe uptake of technetium, iodine and selenium by Agrostis capillaris and Lolium perenne
文献类型：期刊论文
| 作者 | Wang, J.1,2; Bailey, E. H.3; Sanders, H. K.3; Izquierdo, M.3; Crout, N. M. J.3; Shaw, G.3; Yang, L.2; Li, H.2; Wei, B.2; Young, S. D.3 |
| 刊名 | JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 212页码:11 |
| ISSN号 | 0265-931X |
| 关键词 | Selenium Technetium Iodine Bioavailability Enriched stable isotope Soil-to-plant transfer |
| DOI | 10.1016/j.jenvrad.2019.106131 |
| 通讯作者 | Bailey, E. H.(liz.bailey@nottingham.ac.uk) |
| 英文摘要 | To understand the dynamic mechanisms governing soil-to-plant transfer of selenium (Se), technetium-99 (Tc-99) and iodine (I), a pot experiment was undertaken using 30 contrasting soils after spiking with Se-77, Tc-99 and I-129, and incubating for 2.5 years. Two grass species (Agrostis capillaris and Lolium perenne) were grown under controlled conditions for 4 months with 3 cuts at approximately monthly intervals. Native (soil-derived) Se-78 and I-127, as well as spiked Se-77, Tc-99 and I-129, were assayed in soil and plants by ICP-MS. The grasses exhibited similar behaviour with respect to uptake of all three elements. The greatest uptake observed was for Tc-99, followed by Se-77, with least uptake of I-129, reflecting the transformations and interactions with soil of the three isotopes. Unlike soil-derived Se and I, the available pools of Se-77, Tc-99 and I-129 were substantially depleted by plant uptake across the three cuts with lower concentrations observed in plant tissues in each subsequent cut. Comparison between total plant offtake and various soil species suggested that (77)SeOi(4)(2-), (TcO4-)-Tc-99 and (IO3-)-I-129, in soluble and adsorbed fractions were the most likely plant-available species. A greater ratio of I-127/-I-129 in the soil solid phase compared to the solution phase confirmed incomplete mixing of spiked I-129 with native I-127 in the soil, despite the extended incubation period, leading to poor buffering of the spiked available pools. Compared to traditional expressions of soil-plant transfer factor (TFtotal), a transfer factor (TFavailable) expressed using volumetric concentrations of speciated 'available' fractions of each element showed little variation with soil properties. |
| WOS关键词 | PLANT TRANSFER ; SOIL ; TC-99 ; DEFICIENCY ; DYNAMICS ; BEHAVIOR ; BIOFORTIFICATION ; LIQUID ; SE |
| 资助项目 | University of Nottingham ; Chinese Academy of Sciences ; Natural Environmental Research Council Radioactivity in the Environment Award[NE/L000504/1] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000510973800010 |
| 资助机构 | University of Nottingham ; Chinese Academy of Sciences ; Natural Environmental Research Council Radioactivity in the Environment Award |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/132286]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Bailey, E. H. |
| 作者单位 | 1.Cent China Normal Univ, Res Inst Sustainable Dev, Key Lab Geog Proc Anal & Simulat, Wuhan 430079, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Univ Nottingham, Sch Biosci, Sutton Bonington Campus, Loughborough LE12 5RD, Leics, England |
| 推荐引用方式 GB/T 7714 | Wang, J.,Bailey, E. H.,Sanders, H. K.,et al. Using chemical fractionation and speciation to describe uptake of technetium, iodine and selenium by Agrostis capillaris and Lolium perenne[J]. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,2020,212:11. |
| APA | Wang, J..,Bailey, E. H..,Sanders, H. K..,Izquierdo, M..,Crout, N. M. J..,...&Young, S. D..(2020).Using chemical fractionation and speciation to describe uptake of technetium, iodine and selenium by Agrostis capillaris and Lolium perenne.JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,212,11. |
| MLA | Wang, J.,et al."Using chemical fractionation and speciation to describe uptake of technetium, iodine and selenium by Agrostis capillaris and Lolium perenne".JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 212(2020):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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