Complexation of Co (II) and Spectrophotometric Determination of the complex using 5-Nitrosalicylaldehyde semicarbazone (NSS) as an Analytical Reagent
Journal Title: International journal of Emerging Trends in Science and Technology - Year 2017, Vol 4, Issue 2
Abstract
5-nitrosalicylaldehyde semicarbazone (NSS) is proposed as a new sensitive reagent for the sensitive extractive spectrophotometric determination of Co (II). NSS reacts with Co (II) in the pH range 8.0 to 8.4 to form a coloured complex, which was well extracted into Iso Amyl Alcohol The absorption spectrum of Co (II) NSS complex in Iso Amyl Alcohol shows maximum absorbance at 417 nm. It was observed that the colour development was instantaneous and stable for 48 hrs. The system obeyed Beer’s law up to 0.5 to 3.0 µg / cm 3 . The molar absorptivity calculated was found to be 2.86 * 104 lit mol-1 cm -1 and the sensitivity of the method as defined by sandal’s was 1.0 * 10-4 μg/cm2 . The composition of the extracted species was determined by Job’s Continuous variation method and Mole ratio method was found to be 1:4. It may be satisfactorily applied for the determination of Co (II) with present method.
Authors and Affiliations
K. N Patankar Jain
Keywords
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