Abstract
The inductively coupled argon plasma (ICP) has proved to be an excellent source for determining a variety of elements in various materials. The ICP has been used by several authors to determine nitrogen in various forms but not directly from a liquid sample. Alder, et al. determined low levels of ammonium by oxidation with sodium hypobromite in an alkaline medium. The resultant evolved nitrogen was then passed into an ICP and the emission of the NH band emission at 336.0 nm measured. Gaseous compounds containing nitrogen were analyzed by Northway et al. by injecting samples into the ICP and measuring the 868.027 nm N line. Brown et al. have reported the successful analysis of volatile organic liquids for nitrogen with the use of the ICP as a nitrogen selective detector for gas-liquid chromatography.
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