Application of Emulsions for Direct Flame Atomic Absorption Spectrometric Analysis of Organic Liquids

✍ Scribed by János Lakatos; István Lakatos; Gyula Bagdi

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 328 KB
• Volume: 54
• Category: Article
• ISSN: 0026-265X
• DOI: 10.1006/mchj.1996.0106

✦ Synopsis

The proportion of aerosol desolvatation in sample introduction in different volatility systems and the possibility of solvent-type-independent sample introduction based on nebulization of O/W type macroemulsions were investigated. It was found that desolvatation governs sample introduction if the volatility of the solvent is high and the aerosol concentration in the chamber is small. O/W type macroemulsions, which can eliminate the differences of nebulization and aerosol desolvatation, were considered. Due to the insufficient stability of this type of emulsion, a vapor trap needs to be coupled into the sample introduction line to get good identity of the values of absorbance measured in different solvents. Using O/W type microemulsions, the emulsion stability problem can be eliminated; however, the analytical signals remain solvent type dependent.