Microwave-Assisted Vapor-Phase Acid Digestion of Cellulose Nitrate Filters for Elemental Analysis of Airborne Dust Samples

Z. Czégény, B. Berente, M. Óvári, M. García Tapia, G. Záray

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A microwave-assisted vapor-phase digestion procedure was developed for microanalytical investigation of airborne dust samples collected on cellulose nitrate filters. The decomposition of a filter placed in a quartz microvial was carried out by oxidation using a mixture of HNO3 and H2O2 in a closed Teflon bomb. To avoid charring of the filter the temperature was increased from 25 to 180°C in five steps over 97 min. The decomposition rate of cellulose nitrate amounted to 95%. Recovery of Ni, V, Pb, Pt, and Pd ranged from 85 to 94%. The applicability of this sample preparation procedure resulting in 1 ml solution was demonstrated by investigation of airborne dust samples collected in the Clark tunnel in Budapest using total reflection X-ray fluorescence spectrometry.

Original languageEnglish
Pages (from-to)100-106
Number of pages7
JournalMicrochemical Journal
Volume59
Issue number1
Publication statusPublished - May 1998

Fingerprint

Collodion
Dust
Vapors
Microwaves
Decomposition
Quartz
Acids
Polytetrafluoroethylene
Chemical analysis
Tunnels
Recovery
Oxidation
Temperature
X-Ray Emission Spectrometry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Microwave-Assisted Vapor-Phase Acid Digestion of Cellulose Nitrate Filters for Elemental Analysis of Airborne Dust Samples. / Czégény, Z.; Berente, B.; Óvári, M.; García Tapia, M.; Záray, G.

In: Microchemical Journal, Vol. 59, No. 1, 05.1998, p. 100-106.

Research output: Contribution to journalArticle

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