| 摘要 |
In a system for analyzing the elemental or molecular composition of a sample where the sample components are excited through collision with an active metastable gaseous species, the excited sample components emitting a characteristic wavelength of light which may be detected, the system including a microwave cavity through which the gaseous species flows and a microwave source coupled to the cavity, the microwave discharge exciting the gaseous species, there is disclosed an improved gas and sample introduction system wherein a liquid sample and a water soluble compound are mixed with a diluent and aspirated into the flow, upstream of the microwave cavity, onto a heated filament, the compound being capable of releasing nitrogen or some other suitable gas molecules at high temperature and low pressure whereupon formation of nitrogen and vaporization of the sample occur simultaneously.
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