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The Spectrophotometric Determination of Samarium (III) With (l-2(2-Benzoinidazoly-AZO)-2-Hydroxy-3-Naphthoic Acid | ||
| Ibn Al-Haitham Journal For Pure And Applied Science | ||
| Article 1, Volume 23, Issue 3, 2010, Pages 128-133 | ||
| Abstract | ||
| Samarium(III) ions react with (l-2(2-benzoinidazolyl-azo)-2-hydroxy-3-naphthoic acid in basic medium (pH = 8.0) forms a red-orange complex at A.max (550nm). The complex was found to be stable for at least 48 hrs. at the given pH. The apparent molar absorptivity is 7776.77 L.mol-1.Cm-1 and a linear calibration curve is obtained in the range (0.639x 10-5M - 6.350x 10 -5M).The stoichiometry of complex was confirmed by using mole ratio method which indicated that ratio of reagent to metal is 3:1.The effects of the presence of different cations and anions as interferences in the determination of samarium(III) under the given conditions were investigated. | ||
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