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Flow-injection spectrophotometric determination of cadmium with PAN in DMF media | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 14, Issue 2, 2009, Pages 51-56 | ||
| Author | ||
| Khozan A. Haji | ||
| Abstract | ||
| Determination of Cd2+by spectrophotometric method with flow injection analysis was studied using PAN as a reagent in DMF media . Cd2+ was determined spectrophotometrically in pH 9 (The buffer produced from NH4OH,CH3COONH4) and λmax 550nm using PAN as a reagent in DMF, Beer-Lambert low was obeyed in the range (0.05-2 mg/l) with detection limit was 0.04 mg/l , ε=5.4*104L/mol.cm .Precision and accuracy of the method were studied (S.D=1*10-3 ,%E=-0.18-+2.56) and interferences of dominant cations were studied . The method converted to flow injection analysis in pH 8.5 the range became (0.5-8 mg/l) in the same λmax , solvent and reagent ,detection limit become 0.2 mg/l, ε=1.2*104L/mol.cm . Precision and accuracy of the method was studied (S.D=0.28_-3.6,%E=-2.17-+1.72) and interferences of dominant cations were studied . 90 sample was determined in one hour in FIA. This method could be applied to the rapid and simple determination of cadmium in real sample . | ||
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