Abstract

A low-wattage microwave discharge for the detection of trace elements in solution has been investigated. Aqueous sample solutions were nebulized by an ultrasonic nebulizer, and the solvent was removed by a desolvation facility before introduction of the aerosol into the discharge. Pronounced inter-element effects, both enhancements and suppressions of the emission, were found. The rotational and excitation temperatures of the discharge were determined, and the former was found to be much lower than the latter.

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