Metals leachability from medical waste incinerator fly ash: A case study on particle size comparison

Environ Pollut. 2006 Dec;144(3):726-35. doi: 10.1016/j.envpol.2006.02.010. Epub 2006 Apr 24.


This paper presents the results from a study of metals leachability of medical waste incinerator fly ash in Japan on the basis of particle size. Sequential extraction and Toxicity Characteristic Leaching Procedure (TCLP) analysis were carried out in order to quantify the leaching amount of metals in each categorized particle size. Sequential extraction was also subjected to identify the preference of binding matrix of metals. The results of sequential extraction showed an increase both exchangeable and carbonate associated chromium concentrations in the bigger particle size fractions. Likewise, concentrations of carbonate matrix of arsenic and tin tended to increase in the bigger particle size fractions. In contrast, exchangeable associated cadmium as well as both exchangeable and carbonate matrices of barium were found higher in the smaller particle size fractions. However, no correlation was found in Kendal-tau correlation analysis between particle size of the ash and metals leachability of the TCLP.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Barium / analysis
  • Cadmium / analysis
  • Carbon*
  • Chromium / analysis
  • Coal Ash
  • Copper / analysis
  • Environmental Monitoring / methods
  • Environmental Pollution*
  • Incineration*
  • Iron / analysis
  • Japan
  • Lead / analysis
  • Manganese / analysis
  • Medical Waste Disposal*
  • Metals / analysis*
  • Nickel / analysis
  • Particle Size
  • Particulate Matter*
  • Soil Pollutants / analysis*
  • Tin / analysis
  • Zinc / analysis


  • Coal Ash
  • Medical Waste Disposal
  • Metals
  • Particulate Matter
  • Soil Pollutants
  • Cadmium
  • Chromium
  • Barium
  • Lead
  • Manganese
  • Tin
  • Carbon
  • Copper
  • Nickel
  • Iron
  • Zinc