, Volume 357, Issue 3, pp 345-350

Acoustically levitated droplets — a new tool for micro and trace analysis

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First experiences with the technique of acoustical levitation of droplets in the field of analytical and atmospheric chemistry are reported. Acoustical levitation enables the contactless handling of solid and liquid microsamples. This avoids adsorption of analyte at and desorption of contaminants from container walls especially for liquid samples. Common experiments of sample preparation procedures were conducted in levitated drops like liquid/liquid extractions, solvent exchange, and analyte enrichment by evaporation of the solvent. A first approach was made to use acoustical levitation for the simulation of atmospheric chemistry situations.

Dedicated to Professor Dr. K. Bächmann on the occasion of his 60th birthday
on leave to GKSS-Forschungszentrum, Max-Planck-Strasse, D-21502 Geesthacht, Germany