Size-based analysis of incinerator fly ash using gravitational SPLITT fractionation, sedimentation field-flow fractionation, and inductively coupled plasma-atomic emission spectroscopy

Won Suk Kim, Mira Park, Dai Woon Lee, Myeong Hee Moon, Heungbin Lim, Seungho Lee

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10 Citations (Scopus)

Abstract

Fly ash has been regarded as hazardous because of its high adsorption of toxic organic and/or inorganic pollutants. Fly ash is also known to have broad distributions of different chemical and physical properties, such as size and density. In this study, fly ash emitted from a solid waste incinerator was pre-fractionated into six sub-populations by use of gravitational SPLITT fractionation (GSF). The GSF fractions were then analyzed by sedimentation field-flow fractionation (SdFFF) and ICP-AES. SdFFF analysis showed the fly ash has a broad size distribution ranging from a few nanometers up to about 50 μm. SdFFF results were confirmed by electron microscopy. Inductively coupled plasma-atomic emission spectroscopy (ICP-AES) analysis of the GSF fractions showed the fly-ash particles contain a variety of inorganic elements including Ca, Si, Mg, Fe, and Pb. The most abundant in fly ash was Ca, followed by Si then Mg. No correlations were found between trace element concentration and particle size.

Original languageEnglish
Pages (from-to)746-752
Number of pages7
JournalAnalytical and Bioanalytical Chemistry
Volume378
Issue number3
DOIs
Publication statusPublished - 2004 Feb 1

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All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry

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