In this study , organic reagent 2-[6-Nitro-2-benzothiazolylazo]-4-hydroxy benzoic acid (NO2BTAHB) was synthesized. A sensitive and selective spectrophotometric method was proposed for the rapid determination of Cu(II) using (NO2BTAHB) reagent .The reaction between Cu(II) and (NO2BTAHB) reagent is instantaneous at pH=6.0 and the absorbance remains stable for over 24 hrs.
The Method allows for the determination of Cu(II) over the range (0.1-6.0) µg.ml-1 ,with molar absorptivity of (7.45 x 10+3)l.mol-1.cm-1 and a detection limit of 0.0245µg.ml-1.Recovery and relative error values of precision and accuracy of method were found to be R.S.D=1.7% , Re=98.6% , and Erel =-1.4% . The properties of complex was studied and show; (M:R) ratio was 1:2 at pH=6.0 ,and the stability constant of 7.796 x 10+9L2.mol-2 . The interferences of ions (Ni2+ , CrO2- , Ca2+ , pb2+,Cu+2,WO4-2,MO4-2, Co2+ , Mg2+ , Cd2+, Ba2+ , Bi3+) and masking agents effect on absorbance were studied .
Cite this article:
Aqeel Mahdi Jreo. Preparation and Analytical Studying of Ligand (NO2BTAHB) with (Cu) - Ion. Research J. Science and Tech. 7(1): Jan.-Mar. 2015; Page 01-08. doi: 10.5958/2349-2988.2015.00001.7