Microextended X-ray absorption fine structure studies of cadmium speciation within single municipal solid waste fly ash particles.
The local chemical structure of trace amounts of cadmium within microvolumes of highly inhomogeneous municipal solid waste fly ash particles was successfully monitored by means of micro-EXAFS. A new quantification procedure was developed for the evaluation of the micro-EXAFS data sets obtained from each individual particle based on a reverse Monte Carlo simulation. Evidence has been presented for the existence of cadmium silicate and cadmium chloride, with the cadmium silicate being the dominant form, and it has been demonstrated that the cadmium exists in both crystalline and amorphous states within the microspots analyzed.
Camerani Pinzani
Maria Caterina
MC
Department of Inorganic Environmental Chemistry, Chalmers University of Technology, S-412 96 Göteborg, Sweden. caterina@inoc.chalmers.se
Ansell
Stuart
S
Somogyi
Andrea
A
Steenari
Britt-Marie
BM
Lindqvist
Oliver
O
D000042:Absorption; D000393:Air Pollutants / Q000032:analysis*; D002104:Cadmium / Q000032:analysis* / Q000737:chemistry*; D002244:Carbon / Q000032:analysis* / Q000737:chemistry; D060729:Coal Ash; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D052638:Particulate Matter; D013052:Spectrometry, X-Ray Emission / Q000295:instrumentation / Q000379:methods*
D000393:Air Pollutants; D060729:Coal Ash; D052638:Particulate Matter; D002104:Cadmium; D002244:Carbon