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2009•The Open Analytical Chemistry JournalOpen access

Direct and Derivative Spectrophotometric Determination of Copper(II) with 5-Bromosalicylaldehyde Thiosemicarbazone

G. Ramanjaneyulu, Prabashni Reddy, V. Krishna Reddy, T. Sreenivasulu Reddy

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Abstract

A rapid and sensitive spectrophotometric method is developed for the determination of Copper (II) in aqueous DMF medium.The metal ion forms a light greenish yellow coloured complex with 5-bromo salicylaldehyde thiosemicarbazone (5-BSAT) in acidic medium.The complex shows absorption maximum at 390nm.Beer's law is obeyed in the range 0.31 -6.35 gml -1 of Copper (II).The molar absorptivity ( ) and Sandell's sensitivity are found to be 1.08 X 10 4 l mole -1 cm -1 and 0.062 gcm -2 respectively.A method for the determination of copper by third derivative spectrophotometry is also proposed.The methods have been employed successfully for the determination of copper in grape leaves and aluminum based alloy samples.

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A rapid and sensitive spectrophotometric method is developed for the determination of Copper (II) in aqueous DMF medium.The metal ion forms a light greenish yellow coloured complex with 5-bromo salicylaldehyde thiosemicarbazone (5-BSAT) in acidic medium.The complex shows absorption maximum at 390nm.Beer's law is obeyed in the range 0.31 -6.35 gml -1 of Copper (II).The molar absorptivity ( ) and Sandell's sensitivity are found to be 1.08 X 10 4 l mole -1 cm -1 and 0.062 gcm -2 respectively.A method for the determination of copper by third derivative spectrophotometry is also proposed.The methods have been employed successfully for the determination of copper in grape leaves and aluminum based alloy samples.

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Available abstract

A rapid and sensitive spectrophotometric method is developed for the determination of Copper (II) in aqueous DMF medium.The metal ion forms a light greenish yellow coloured complex with 5-bromo salicylaldehyde thiosemicarbazone (5-BSAT) in acidic medium.The complex shows absorption maximum at 390nm.Beer's law is obeyed in the range 0.31 -6.35 gml -1 of Copper (II).The molar absorptivity ( ) and Sandell's sensitivity are found to be 1.08 X 10 4 l mole -1 cm -1 and 0.062 gcm -2 respectively.A method for the determination of copper by third derivative spectrophotometry is also proposed.The methods have been employed successfully for the determination of copper in grape leaves and aluminum based alloy samples.

Key concepts: Copper, Molar absorptivity, Salicylaldehyde, Semicarbazone, Chemistry, Derivative (finance), Metal, Nuclear chemistry

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Direct and Derivative Spectrophotometric Determination of Copper(II) with 5-Bromosalicylaldehyde Thiosemicarbazone — Research Paper | ScholarLens