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Emission Line Enhancement in a dc Plasma

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Abstract:

Emission line enhancement in a dc plasma seeded with an easily ionizable matrix salt is discussed. Enhancement is shown to be inversely related to the ionization potential of the matrix element. The temperature of the plasma core is shown to decrease in the presence of an easily ionizable element, while the effective temperature experienced by the analyte is shown to increase under the same conditions. The emission of the plasma is spatially profiled with and without an easily ionizable matrix element at the 425.4 nm Cr line, the 340.5 nm Co line, and the 334.5 nm Zn line.

Keywords: Matrix enhancement effects; dc plasma emission

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702814731752

Affiliations: 1: Harold E. Edgerton Research Laboratory, New England Aquarium, Boston, Massachusetts 02110; present address: EPA, National Enforcement Investigating Center, Building 53, Denver Federal Center, Denver, CO 80225 2: Harold E. Edgerton Research Laboratory, New England Aquarium, Boston, Massachusetts 02110

Publication date: January 1, 1981

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