Elemental analysis of airborne dust by energy dispersive fluorescent x-ray spectrometry
A study was made to resolve some problems involved in the application of energy dispersive fluorescent x-ray spectrometry to elemental analysis of airborne dust samples collected on a membrane filter. In the attempt to determine simultaneously as many elements as possible, it should be remembered that the energy of characteristic x rays may extend in a considerably wide range even down to 1.0 keV. In order to make accurate quantitative multielement analysis it is absolutely necessary to grasp exactly the deviation from the proportionality relation that holds in a thin specimen between the counting rate of characteristic x-rays and the mass per unit area of the corresponding element present. For the purpose of determining the method of correction for specimens of medium thickness in which the above mentioned proportionality relation does not hold, thirteen airborne dust samples, whose dust mass per unit area varied in a range from 0.2 to 7.5 mg/cm/sup 2/, were subjected to both x-ray fluorescence analysis and instrumental neutron activation analysis, and the deviation from the proportionality was investigated. The experimental results thus obtained were compared with the theoretical relations obtained assuming appropriate absorption coefficients with dust. On the basis of these data, the twelve elements, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Br, and Pb, were determined for actual dust samples by excitation by /sup 241/Am source. (auth)
- Research Organization:
- Radiation Center of Osaka Prefecture, Sakai, Japan
- NSA Number:
- NSA-29-015314
- OSTI ID:
- 4345109
- Journal Information:
- Annu. Rep. Radiat. Center Osaka Prefect., v. 13, pp. 16-22, Other Information: Orig. Receipt Date: 30-JUN-74; Bib. Info. Source: JA (JA)
- Country of Publication:
- Japan
- Language:
- English
Similar Records
Large-scale measurement of airborne particulate sulfur
Wind barriers suppress fugitive dust and soil-derived airborne particles in arid regions
Related Subjects
*AIR- CHEMICAL ANALYSIS
*BROMINE- X-RAY FLUORESCENCE ANALYSIS
*CALCIUM- X-RAY FLUORESCENCE ANALYSIS
*CHROMIUM- X-RAY FLUORESCENCE ANALYSIS
*COPPER- X-RAY FLUORESCENCE ANALYSIS
*DUSTS- CHEMICAL ANALYSIS
*IRON- X-RAY FLUORESCENCE ANALYSIS
*LEAD- X-RAY FLUORESCENCE ANALYSIS
*MANGANESE- X-RAY FLUORESCENCE ANALYSIS
*NICKEL- X-RAY FLUORESCENCE ANALYSIS
*POTASSIUM- X-RAY FLUORESCENCE ANALYSIS
*TITANIUM- X-RAY FLUORESCENCE ANALYSIS
*VANADIUM- X-RAY FLUORESCENCE ANALYSIS
*ZINC- X-RAY FLUORESCENCE ANALYSIS
ACTIVATION ANALYSIS
AMERICIUM 241
COMPARATIVE EVALUATIONS
MULTI-ELEMENT ANALYSIS
NEUTRON REACTIONS
NONDESTRUCTIVE A