Flow injection-inductively coupled plasma spectrometry: a new strategy for ultratrace analysis

Abstract

A FI (Flow Injection) system incorporating a microcolumn of activated alumina has been devised for rapid on-line preconcentration in ICP (Inductively Coupled Plasma Spectrometry) emission spectrometry. Preconcentration factors of at least 100-fold are realized for a wide range of cationic and anionic species at sampling times of several minutes. The FI experiment may be coupled to alternative techniques including flame atomic absorption spectrometry and solution spectrophotometry and hence there is considerable scope for redeployment of such instrumentation for ultratrace analysis.