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Spectrofluorimetric flow-injection determination of cerium in carbon and low alloy steels

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Abstract

Cerium can be determined spectrofluorimetrically (λem 350 nm, λex 260 nm) based on the relatively intense native fluorescence of the cerium(III) aquo-ion. The main potential interference in the analysis of steel from iron(III), cerium(IV) and chromium(VI) are removed by use of a carrier solution containing 2.5% w/v hydroxylammonium chloride. The slight residual interference from iron(II) can be corrected by a matrix matching factor linearly related to the amount of iron present. The calibration graphs are linear over the range 0–7 μg ml−1 based on 250 μl injection volumes. The sampling rate was 30 h−1. The relative standard deviation was 2.0% (n=5) at 3 μg ml−1 cerium. The system has been applied to the determination of cerium in carbon or low alloy steels.

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Authors and Affiliations

  1. Department of Analytical Chemistry, The Queen's University of Belfast, BT9 5AG, Belfast, UK

    D. Thorburn Burns, Champa D. P. Dangolle & M. Harriott

Authors
  1. D. Thorburn Burns
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  2. Champa D. P. Dangolle
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  3. M. Harriott
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Burns, D.T., Dangolle, C.D.P. & Harriott, M. Spectrofluorimetric flow-injection determination of cerium in carbon and low alloy steels. Mikrochim Acta 119, 49–53 (1995). https://doi.org/10.1007/BF01244853

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  • DOI: https://doi.org/10.1007/BF01244853

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