Flow Injection Kinetic Spectrophotometric Determination of Cerium Based on the Decolorization Reaction Between Arsenazo III and Cerium (IV)

Zhu, Xiashi; Zhang, Yaqin; Gong, Aiqin; Zhang, Xiawen

doi:10.1080/00387010802225468

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2013

2024

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Cited by 4 publications

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“…The determination of Ce (IV) in the range 0-8.0 µg ml -1 , with a correlation coefficient (r) of 0.9982 was obtained. The proposed method was applied to analyze Ce in soil successfully (Zhu et al, 2008). Colorimetric method for the determination of cerium (IV) ions with ampicillin and amoxicillin has been worked out.…”

Section: ‫ــــــــــــــــــــــــــــــــــــــــــــــــــــ‬ Intromentioning

confidence: 99%

Spectrophotometric Determination of Cerium (III) with Arsenazo III: Application to Sea Water and Synthetic Alloys

Sulaiman¹,

Hanna²,

Bashir³

2013

RJS

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The detailed investigation of a sensitive and selective spectrophotometric method for the determination of trace amounts of cerium is described. The method is based on the reaction of cerium(III) with arsenazo ш in the presence of sodium dodecyl sulphate surfactant at pH 3.0 to form a blue-greenish coloured chelate absorbing maximum at 653 nm. Beer's law is obeyed over the range (5-70) µg /25 ml, with a molar absorptivity of (4.99×10 4) l.mol-1 .cm-1 and the coefficient of determination (r 2) is 0.9994, Sandell ' s sensitivity index is (28.08×10-4) µg.cm-2 , a relative error of (0.0-0.2%) and a relative standard deviation of (0.0 to +2.1)%, depending on the concentration levels in the calibration curve. The method has been applied successfully to determine cerium in sea water and some synthetic alloys.

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Section: ‫ــــــــــــــــــــــــــــــــــــــــــــــــــــ‬ Intromentioning

confidence: 99%