Journal
CHEMPHYSCHEM
Volume 8, Issue 16, Pages 2331-2335Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.200700426
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he emission from electronically excited sodium atoms (Na*) from aqueous solutions containing NaCl or sodium dodecylsulfate under ultrasonic irradiation is studied. Evidence is presented that strongly suggests Na* emission arises from a population of bubbles that are sonochemically active but not producing sonoluminescence (SL). Results indicate that the Na* emission intensity is mainly dependent on the concentration of Na+ ions near the bubble/solution interface. The results provide further insight into the origin of alkali metal spectral line emission from sonicated aqueous solutions containing sodium ions.
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