TY - JOUR
T1 - A study of trace element behavior in two modern coal-fired power plants I
T2 - Development and optimization of trace element analysis using reference materials
AU - Hatanpää, Eliisa
AU - Kajander, Kaarina
AU - Laitinen, Timo
AU - Piepponen, Sulo
AU - Revitzer, Hannu
N1 - Project code: K7SU00013
PY - 1997
Y1 - 1997
N2 - Analytical methods for solid samples
taken from a coal-fired power plant were developed and optimized in
order to facilitate a comprehensive series of measurement campaigns
aimed at trace metal balance determinations in various coal-fired power
plants. Commercial reference materials with certified trace element
contents were used as model samples. A procedure which had been
previously developed for the analysis of fly ash was found to give good
recoveries in the case of both coal fly ash and coal in a two-laboratory
intercomparison. This procedure was based on microwave digestion in a
mixture of HNO3 and HF in closed vessels. The digestion of
samples of dolomitized limestone and gypsum rock was found to be
successful under similar conditions but using a mixture of HNO3,
HCl and HF, although the precision of the determination was not as good
as in the case of coal and coal fly ash. The digestion procedures
developed and tested in this work can be recommended as simple and
uniform methods in the analysis of power plant samples for a number of
trace elements, exclusive Hg.
AB - Analytical methods for solid samples
taken from a coal-fired power plant were developed and optimized in
order to facilitate a comprehensive series of measurement campaigns
aimed at trace metal balance determinations in various coal-fired power
plants. Commercial reference materials with certified trace element
contents were used as model samples. A procedure which had been
previously developed for the analysis of fly ash was found to give good
recoveries in the case of both coal fly ash and coal in a two-laboratory
intercomparison. This procedure was based on microwave digestion in a
mixture of HNO3 and HF in closed vessels. The digestion of
samples of dolomitized limestone and gypsum rock was found to be
successful under similar conditions but using a mixture of HNO3,
HCl and HF, although the precision of the determination was not as good
as in the case of coal and coal fly ash. The digestion procedures
developed and tested in this work can be recommended as simple and
uniform methods in the analysis of power plant samples for a number of
trace elements, exclusive Hg.
U2 - 10.1016/S0378-3820(97)00006-4
DO - 10.1016/S0378-3820(97)00006-4
M3 - Article
SN - 0378-3820
VL - 51
SP - 205
EP - 217
JO - Fuel Processing Technology
JF - Fuel Processing Technology
IS - 3
ER -