A Miniature, Low Energy Spark Discharge System for Emission Spectrochemical Analysis of Solutions

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Abstract:

A miniature spark discharge system is described for solution analysis by emission spectroscopy. Samples are introduced as dry particles formed by nebulization into a heated desolvation chamber. The spark is formed by the discharge of a coaxial capacitor through a stream of argon which transports the desolvated aerosol. A photoelectric, time-resolved detection system for mechanistic studies and analytical applications is described. The detection system consists of a synchronous integrator controlled by a digital timing and sequencing system. The time-resolved spectral characteristics of the source are discussed, and time resolution is shown to provide enhanced sensitivity. Analytical results are reported for a variety of elements.

Keywords: Emission spectroscopy; Instrumentation-emission spectroscopy; Time-resolved spectroscopy

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370275774456030

Affiliations: 1: Department of Chemistry, Michigan State University, East Lansing, Michigan 48824; present address: Eli Lilly and Company, P.O. Box 618, Indianapolis, Ind. 46206 2: Department of Chemistry, Michigan State University, East Lansing, Michigan 48824

Publication date: May 1, 1975

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