Effect of crown-ether surfactants on flame atomic absorption and flame emission signals of some monovalent cations

✍ Scribed by Timothy J. Ward; Daniel W. Armstrong; Bronislaw P. Czech; Jacek F. Koszuk; Richard A. Bartsch

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 377 KB
• Volume: 188
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)86057-2

✦ Synopsis

Two surface-active and one surface-inactive 18-crown-6 derivatives were synthesized and evaluated for their abilities to enhance flame atomic absorption and flame emission signals of monovalent cations. Enhancements of potassium signals were noted for the surface-active compounds but not for the surface-inactive compound. The critical micelle concentration was determined and compared to the degree of enhancement. Surfactant-induced signal enhancements are not due to the slight or moderate decrease in the size of the aerosol first produced in the nebulizing chamber. Additional mechanistic considerations are discussed.