Accumulation of rare earth elements in maize plants (Zea mays L.) after application of mixtures of rare earth elements and lanthanum
文献类型：期刊论文
| 作者 | Xu, XK; Zhu, WZ; Wang, ZJ; Witkamp, GJ |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2003 |
| 卷号 | 252期号:2页码:267-277 |
| 关键词 | Ce anomaly Gd anomaly ICP-MS maize rare earth elements safety assessment |
| 英文摘要 | Rare earth elements are applied in China to improve crop production, and the distribution patterns of individual rare earth elements in native plants have widely been reported. But our knowledge is still limited about the dose-dependent accumulation of individual rare earth elements in agricultural crops after application of rare earth elements. Effects of lanthanum and mixtures of rare earth elements were studied in pot experiments on the accumulation of individual rare earth elements in maize plants. All plant samples were divided into plant tops and roots. On addition of mixtures of rare earth elements and lanthanum to the soil, a significant dose-dependent accumulation of individual rare earth element(s) was found in the roots and in the plant tops. Application of mixtures of rare earth elements at > 10 mg kg(-1) soil, resulted in a significant increase in contents of light rare earth elements in the roots, and at a dose of 50 mg kg(-1) soil, a similar phenomenon was found in the plant tops. When mixtures of rare earth elements were replaced by lanthanum alone, at a dose higher than 10 mg La kg(-1) soil, a significant increase in La content occurred in the roots and in the plant tops. The content ratio of La to Ce in maize plants appeared to increase as the application doses of rare earth element( s) increased. At a highest dose (50 mg kg(-1) soil), the transport of the absorbed La from the roots to the plant tops might be substantially reduced after treatment with lanthanum alone, compared with mixtures of rare earth elements. Increasing the application doses of rare earth element(s) appeared to cause a positive Gd and negative Ce anomaly in the roots and in the plant tops, and the anomaly was more obvious in the plant tops than in the roots. The results indicated that the Gd and Ce anomaly in corns might be considered as important parameters for the safety assessment of agricultural application of rare earth elements. |
| 研究领域[WOS] | Agriculture ; Plant Sciences |
| WOS记录号 | WOS:000184191800008 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23736]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Xu, XK,Zhu, WZ,Wang, ZJ,et al. Accumulation of rare earth elements in maize plants (Zea mays L.) after application of mixtures of rare earth elements and lanthanum[J]. PLANT AND SOIL,2003,252(2):267-277. |
| APA | Xu, XK,Zhu, WZ,Wang, ZJ,&Witkamp, GJ.(2003).Accumulation of rare earth elements in maize plants (Zea mays L.) after application of mixtures of rare earth elements and lanthanum.PLANT AND SOIL,252(2),267-277. |
| MLA | Xu, XK,et al."Accumulation of rare earth elements in maize plants (Zea mays L.) after application of mixtures of rare earth elements and lanthanum".PLANT AND SOIL 252.2(2003):267-277. |
入库方式： OAI收割
来源：生态环境研究中心
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