• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of environmental analytical chemistry >Quantitative analysis of precious metals in automotive shredder residue/combustion residue via EDX fluorescence spectrometry
【24h】

Quantitative analysis of precious metals in automotive shredder residue/combustion residue via EDX fluorescence spectrometry

机译：EDX荧光光谱法定量分析汽车粉碎残渣/燃烧残渣中的贵金属

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The recovery of precious metals from automotive shredder residue (ASR) dust/combustion residue is an option that is not usually considered due to the lack of available information. Therefore, before any disposal or recovery application can be considered, it is necessary to determine the significance of the levels and distribution of precious metal in ASR dust/ASR combustion residue. In the present study, quantitative analysis of precious metals (Pt, Pd, Au, Ag and Cu) in the ASR residue samples was performed using energy dispersive X-ray (EDX) fluorescence spectrometer. With the fundamental parameter (FP) method, the X-ray intensity is obtained and the quantitative analysis is performed using theoretical calculation. This method is very effective for quantitative analysis of unknown samples without standard samples. Further, in order to analyse the precious metal distribution within the ASR combustion residues, the microstructural characterisation and elemental mapping were also carried out with the aid of field emission scanning election microscopy combined with electron dispersive spectroscopy (FE-SEM EDS). Significant amount of Pt, Pd, Au, Ag and Cu element concentrations in the ASR residue were identified. Total precious (Pt, Pd, Au, Ag and Cu) metals obtainable values are representing about 12.23wt% from its initial ASR dust/combustion residues. Considering their relevant concentrations, these metals should be properly recovered for recycling purposes before to dispose or landfill.
机译：从汽车粉碎残渣（ASR）灰尘/燃烧残渣中回收贵金属是一种可选方案，由于缺乏可用信息，通常不予考虑。因此，在考虑任何处置或回收应用之前，有必要确定ASR粉尘/ ASR燃烧残渣中贵金属的含量和分布的重要性。在本研究中，使用能量色散X射线（EDX）荧光光谱仪对ASR残留样品中的贵金属（Pt，Pd，Au，Ag和Cu）进行了定量分析。使用基本参数（FP）方法，可以获得X射线强度，并使用理论计算进行定量分析。该方法对于没有标准样品的未知样品的定量分析非常有效。此外，为了分析ASR燃烧残渣中的贵金属分布，还借助于场发射扫描电子显微镜结合电子色散谱（FE-SEM EDS）进行了微结构表征和元素映射。鉴定出ASR残留物中的Pt，Pd，Au，Ag和Cu元素浓度显着。从其最初的ASR粉尘/燃烧残留物中可得到的贵金属（Pt，Pd，Au，Ag和Cu）总量约占12.23wt％。考虑到它们的相关浓度，在处置或掩埋之前，应适当回收这些金属以用于回收目的。

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