Applied investigation on the interaction of hazardous elements binding on ultrafine and nanoparticles in Chinese anthracite-derived fly ash

Sci Total Environ. 2012 Mar 1:419:250-64. doi: 10.1016/j.scitotenv.2011.12.069. Epub 2012 Jan 31.

Abstract

A multifaceted instrumental approach was employed to determine the chemistry and mineralogy of pulverized-coal-combustion fly ashes from two Chinese power plants. Techniques included traditional optical microscopy, X-ray diffraction, and chemical analysis along with a variety of electron beam methods. The aim is to demonstrate and bring together the wide variety of procedures dealing with F as the key element of concern, and determining its location in the mineral nanoparticles. The Hg content of the Anwen (Songzao coalfield) fly ashes is higher than that of the Diandong (East Yunnan) fly ashes, possibly owing to the greater C and Cl in the Anwen fly ashes. Both fly ash sources contain a variety of amorphous and nano-crystalline trace-element-bearing particles, both associated with multi-walled carbon nanotubes and as particles independent of carbons.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Air Pollutants / analysis*
  • Air Pollutants / chemistry*
  • Carbon / chemistry
  • China
  • Coal Ash / analysis*
  • Coal Ash / chemistry*
  • Mass Spectrometry
  • Microscopy, Electron
  • Nanoparticles / analysis
  • Nanoparticles / chemistry
  • Power Plants
  • Scattering, Radiation
  • Spectrum Analysis

Substances

  • Air Pollutants
  • Coal Ash
  • Carbon