...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta Physiologiae Plantarum >What are “heavy metals” in Plant Sciences?
【24h】

What are “heavy metals” in Plant Sciences?

机译：植物科学中的“重金属”是什么？

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

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

摘要

Plants do not have the ability to sense physical properties of metals, e.g. specific weight. The term “heavy metal” was defined mainly by the specific weight of metals. The definition was often connected with the expectation that the substance should be toxic. This definition is not acceptable and also inconsistent in use as already stressed in literature. However, in Plant Sciences, the term is so widely used that it is hardly possible to eliminate it. We suggest instead defining the term in a more unequivocal way. This should be done on the basis of the periodic system of elements. Here, we suggest introducing the following three subgroups forming the group of heavy metals for use in Plant Sciences. 1st subgroup: all transition elements except La and Ac (Transition metals). 2nd subgroup: rare earth elements, subdivided in the series of lanthanides and the series of actinides including La and Ac themselves (Rare earth metals). 3rd subgroup: a heterogenous group p-elements including the metal Bi, the amphoterous oxides forming elements Al, Ga, In, Tl, Sn, Pb, Sb and Po, and the metalloids Ge, As and Te. We suggest using the term “lead-group” for this 3rd subgroup of heavy metals as in Toxicology and Environmental Sciences, Pb is the most prominent representative of this group.
机译：植物没有能力感知金属的物理特性，例如金属。特定的重量。术语“重金属”主要由金属的比重定义。该定义通常与对该物质应该有毒的期望有关。如文献中已经强调的那样，该定义是不可接受的，并且在使用中也不一致。但是，在植物科学中，该术语使用如此广泛，以至于很难消除它。我们建议改为以更明确的方式定义该术语。这应该在元素周期系统的基础上完成。在这里，我们建议介绍以下三个子组，它们构成了植物科学中使用的重金属。第一组：除La和Ac（过渡金属）以外的所有过渡元素。第二亚组：稀土元素，分为镧系和and系元素，包括La和Ac本身（稀土金属）。第三亚组：异质族p-元素，包括金属Bi，形成元素Al，Ga，In，Tl，Sn，Pb，Sb和Po的两性氧化物，以及准金属Ge，As和Te。我们建议像在毒理学和环境科学中一样，将术语“铅基”用于该重金属的第3个亚组，Pb是该组中最突出的代表。

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