تعين ايون الرصاص الثنائي طيفيا باستخدام الكاشف العضوي 2- ]( 6- ميثوكسي – 2- بنزوثيازوليل ) ازو [ - 4 - بنزايل فينول | ||
| Journal of Univesity of Thi-Qar | ||
| Article 1, Volume 7, Issue 3, September 2012, Pages 1-10 | ||
| Abstract | ||
| The study including the determination of pb(II) by using azo reagent 2-[(6-Methoxy -2- benzothiazolyl )azo ]-4- benzylphenol [(6-MBTABP)] spectrophotomtric .The effect of different parameters on determination are evaluated .The study showed that best pH=(7±0.1) .The study including obey concentration of Lambert –Beer's law to determination of the calibration graph of pb(II) by azo reagent .From this graph we note obey the concentration of law was between ( 10 -80 )µg of pb(II) after this values the absorbance increased .The stoichiometry of complex Lead ion determination by mole ratio method. Results indicated reagent to metal ratio was (2:1) the stability constant of the complex determination through mole ratio method and its value indicated good stability. The UV-Vis spectra of the reagent and complex determination .The results indicated the max absorbance of complex in ethanol at (ʎ max =616 nm ) ,but to the reagent at (ʎmax = 471 nm ) .The IR spectra of the reagent and complex were determination and the melting points of complex and reagent were measured too. From all studies proposed structural formula of pb(II) complex . | ||
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