ISSN:
1436-5073
Keywords:
flow-injection
;
spectrofluorimetry
;
cerium(III)
;
steel analysis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01244853
