Original paper

An improved procedure for the X-ray diffraction analysis of low-mass atmospheric dust samples

Caquineau, Sandrine; Magonthier, Marie-Claude; Gaudichet, Annie; Gomes, Laurent

European Journal of Mineralogy Volume 9 Number 1 (1996), p. 157 - 166

36 references

published: Dec 30, 1997
manuscript accepted: Sep 30, 1996
manuscript received: Apr 22, 1996

DOI: 10.1127/ejm/9/1/0157

BibTeX file

ArtNo. ESP147050901014, Price: 29.00 €

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Abstract A method for the X-ray diffraction analysis of low-mass atmopheric dust samples, collected by air-filtration, is described. The sample preparation consists in (1) separating particles from their initial Nuclepore filter by ultrasonic shaking, (2) concentrating them by ultracentrifugation and (3) depositing them by piping onto a ceramic tile in order to induce orientation of the clay fraction. Scans are performed on an X-ray diffractometer fitted with a position-sensitive detector and a collimated incident beam. A semi-quantitative treatment of the data is carried out according to the method of Chung (1975), using reference intensity factors determined from field samples. The results obtained by this procedure on some Saharan dust samples collected on Sal Island are in close agreement with those deduced from their bulk chemical analysis


X-ray diffraction analysismineral aerosolsclay mineralssemi-quantitative analysis