Parameters affecting sensitivity and precision in the combination of flow injection analysis with flame atomic-absorption spectrophotometry
- 1 January 1984
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 109 (8) , 1091-1094
- https://doi.org/10.1039/an9840901091
Abstract
Factors affecting sensitivity and precision in combined flow injection analysis and atomic-absorption spectrophotometry were investigated. Provided the nebuliser aspiration rates and carrier stream flow-rates are carefully chosen, better precision and sensitivity than in conventional manual techniques can be achieved. To obtain high flow-rates into the nebuliser a boost to the carrier stream, immediately prior to the nebuliser, is proposed. For applications such as the ion-exchange pre-concentration of heavy metals, this allows a low rate of flow for the main carrier stream whilst maintaining a higher rate into the nebuliser.Keywords
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