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- Title
Size-based analysis of incinerator fly ash using gravitational SPLITT fractionation, sedimentation field-flow fractionation, and inductively coupled plasma-atomic emission spectroscopy.
- Authors
Kim, Won-Suk; Park, Mira; Lee, Dai Woon; Moon, Myeong Hee; Lim, Heungbin; Lee, Seungho
- 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.
- Subjects
INCINERATORS; FLY ash; PARTICLE size determination; ATOMIC emission spectroscopy; ANALYTICAL chemistry; FIELD-flow fractionation; LIQUID chromatography
- Publication
Analytical & Bioanalytical Chemistry, 2004, Vol 378, Issue 3, p746
- ISSN
1618-2642
- Publication type
Article
- DOI
10.1007/s00216-003-2345-8