• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Biogeochemical Distribution of Rare Earths and Other Trace Elements in Plants and Soils
【24h】

Biogeochemical Distribution of Rare Earths and Other Trace Elements in Plants and Soils

机译：植物和土壤中稀土和其他微量元素的生物地球化学分布

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The rare earth concentrations in vegetables (corn, potatoes, peas, and butternut squash) were found to be extremely low: 10 exp -8 g/g to 10 exp -10 g/g. The chondritic normalized vegetable REE patterns are fractionated, including a negative Eu anomaly, and behave as a smooth function of the REE ionic radii. These patterns may be governed by the geochemistry of accessory minerals in the host soils. The depletion factors for various elements by vegetables relative to bulk soils are approx. 10 exp -4 for REE, Hf, Ta, Th, and U; approx. 10 exp -3 for Al, As, Ba, Cr, Fe, Mn, Sc, Se, And Sr; approx. 10 exp -2 for Co, Cs, Na, Ni, and Sb; approx. 10 exp -1 for Rb; and approx. 1 for K, Zn, and Br. (ERA citation 04:020329)

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号