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Spectrophotometric Determination of Cobalt (II) Using 4-(6- Nitro-2-benzothiazolylazo) resorcinol | ||
| Iraqi National Journal Of Chemistry | ||
| Article 1, Volume 0, Issue 26, 2014, Pages 263-269 | ||
| Author | ||
| Nassir A. Nassir | ||
| Abstract | ||
| Abstract A sensitive and selective spectrophotometric method is proposed for the rapid determination of cobalt (II) using 4- (6- nitro-2- benzothiazolylazo) resorcinol (6-NO2BTAR).The reaction between 6-NO2BTAR and Cobalt (II) is instantaneous at pH 6.0 and the absorbance remains stable for over 24h. The method allows the determination of cobalt over the range (1-8) g/ml with molar absorptivity of (4857.1) L.mol-1.cm-1 and features a detection limit of (0.2) g/ml at 458 nm. The precision (R.S.D%<1%) and the accuracy obtained were satisfactory. The proposed method has been successfully applied to the determination of cobalt in filling. | ||
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