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Digitale Medien

Preparation of quartz fibre filter standards for x-ray fluorescence analysis of aerosol samples (1995)

Haupt, O. ; Klaue, B. ; Schaefer, C. ; [weitere]

New York, NY [u.a.] : Wiley-Blackwell

X-Ray Spectrometry 24 (1995), S. 267-275

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ISSN: 0049-8246

Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Physik

Notizen: Results are presented for an intercomparison of two different techniques to produce standard filter materials for the energy-dispersive x-ray analysis of aerosol filter samples. In one, multi-element standard solutions were dropped on to Munktell quartz-fibre filters and air dried. The other technique utilized an aerosol generator. The dried aerosol was deposited on the filter surface. Extensive calibration procedures were performed with both types of standards. The data were applied to the analysis of urban aerosol filter samples. The results indicated that the aerosol technique provides good accuracy even for elements of atomic numbers below 30. The dropping technique is not applicable for fibre filters and the calibration of light elements (atomic number 〈 30) and achieves lower accuracy. Therefore, the aerosol technique should be applied generally to the preparation of standard filters. This method provides small particles and homogeneous coatings of the multi-element standards.

Zusätzliches Material: 13 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/xrs.1300240511

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Digitale Medien

Trockne Destillation von Cellulose (1910)

Erdmann, E. ; Schaefer, C.

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 43 (1910), S. 2398-2406

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ISSN: 0365-9496

Schlagwort(e): Chemistry ; Inorganic Chemistry