On-line preconcentration and determination of iron by flow injection analysis in nuclear fuels

Determination of trace level of iron in metallic uranium is of great importance. The developed procedure involves online pre-concentration and separation of iron and its determination using flow injection analysis system. The analyte forms complex with mandelic acid and retained in the micro column packed with cation exchanger and matrix goes to waste. The eluted iron was determined and the detection limit of the method is 5 ppb with a precision (RSD) at 100 ppb level of 6.2%.