The oxygen-shielded air-acetylene flame in emission analysis |
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Authors: | Curtis K E Stevenson R G Stephens R |
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Institution: | Trace Analysis Research Centre Department of Chemistry Dalhousie University, Halifax, N.S. Canada. |
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Abstract: | Flame-emission studies have been made on 18 elements in the inner zone of an oxygen-shielded air-acetylene flame. The shielded flame gave higher emission sensitivity that that of the C(2)H(2)N(2)O flame for Cu and Tl, and comparable sensitivity for a number of other elements, but poorer sensitivity for elements forming stable refractory oxides in flames. The inner zone of the shielded flame has low emission-background and high flame-temperature, permitting good analytical sensitivity to be obtained with relatively low-resolution optical equipment. |
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