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Synthesis of the new 2-[(6– Methyl–2- Benzothiazolylazo]-4-Chloro phenol Organic reagent for Spectrophotometric determination of Copper(II). | ||
| Iraqi National Journal Of Chemistry | ||
| Article 1, Volume 0, Issue 25, 2014, Pages 186-194 | ||
| Author | ||
| Hakeem . Jabbar . Ilaybi | ||
| Abstract | ||
| Abstract Anew 2-[(6-Methyl-2-Benzothiazolyl)azo]-4-Chloro Phenol (6-MeBTAClP)Organic reagent was synthesized . A sensitive and selective spectrophotometric method was proposed for the rapid determination of Cu(II) by using (6-MeBTAClP) reagent.The reaction between Cu(II) and (6-MeBTAClP) reagent is instantaneous at pH=4.0, and the absorbance remains stable for over 24 h. The method allows for the determination of Cu(II) over the range (0.05 -4.0)µg.ml-1,with molar absorptivity of( 1.271x104 )l.mol-1.cm-1 and a detection limit of 0.12 µg.ml-1 .Recovery and relative error values of precision and accuracy of method were found to be R.S.D%=0.421,Re%=98.67% ,and Erel=1.33% .Study of complex nature shows that ; (m: r) ratio was 1:2 at pH=4.0 ,and the stability constant of (1.256 x 1010) l2. mol-2 . The interferences of ions (CrO4-2,Pb+2 ,Hg+2 ,Zn+2,Cd+2, Ni+2, MoO4-2,WO4 -2) and masking agents effect on absorbance were studied. | ||
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