X-ray fluorescence spectrometry for analysis of fly ash column leachates
An investigation was conducted to determine the suitability of X-ray fluorescence (XRF) for analyzing the complex mixture of elements in fly ash leachates. XRF analysis was found to provide reasonably accurate measurement with coefficients of variation ranging from 2 to 8% for most elements. Sources of error included interferences by stimulation of fluorescent emissions by strong secondary fluorescent radiation, overlap of emission peaks, and adsorption of fluorescent emission from one element by others. Standardization required preparation of complex mixtures of elements similar in composition to that of leachates. This required considerable preparation time and effort, but once the standards were stored in instrument memory, analysis for as many as 30 elements in leachate specimens required only about 60 min. This study showed that XRF potentially is a valuable tool for analysis of the complex elemental mixtures in fly ash leachates, but additional work is needed to reduce error and increase instrument sensitivity.
- Research Organization:
- Civil Engineering Department and Engineering Research Institute, Iowa State University, Ames, IA
- OSTI ID:
- 6469750
- Report Number(s):
- CONF-820132-
- Journal Information:
- Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States), Vol. STP-805; Conference: ASTM D-34 meeting, Orlando, FL, USA, 28 Jan 1982
- Country of Publication:
- United States
- Language:
- English
Similar Records
Leachate concentrations from water leach and column leach tests on fly ash-stabilized soils
Use of aqueous slurries of coal fly ash samples for the direct determination of As, Sb, and Se by hydride generation-atomic fluorescence spectrometry
Related Subjects
54 ENVIRONMENTAL SCIENCES
FLY ASH
LEACHING
LEACHATES
X-RAY FLUORESCENCE ANALYSIS
X-RAY SPECTROSCOPY
ACCURACY
CHEMICAL ANALYSIS
CHEMICAL PREPARATION
EXPERIMENT PLANNING
LABORATORY EQUIPMENT
STANDARDS
AEROSOL WASTES
ASHES
DISPERSIONS
DISSOLUTION
EQUIPMENT
MIXTURES
NONDESTRUCTIVE ANALYSIS
PLANNING
RESIDUES
SEPARATION PROCESSES
SOLUTIONS
SPECTROSCOPY
SYNTHESIS
WASTES
X-RAY EMISSION ANALYSIS
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)