Monday , 20 May 2019

Simultaneous determination of Ru (III) and W(VI) using Second order derivative spectrophotometry

Dr. Srinivas Jagarlapudi*, Dr. V. Suryanarayana Rao, A. Ravi Kumar, Panchumarthi Srinivas, CH. Sunil Babu
Obvez Labs Pvt. Ltd.  Plot No. 22 & 23, ALEAP Industrial Area, Pragathi Nagar, Hyderabad, Telangana-500090, India

A B S T R A C T
A simple, selective and sensitive spectrophotometric method has been developed for the simultaneous determination of Ruthenium (III) and tungsten (VI) using 3,4-dihydroxybenzaldehyde isonicotinoyl hydrazine (3,4-DHBINH) without any prior separation.  Beer’s law is obeyed between 2.304 to 12.204 µg/ml of Ruthenium (III) at 359 nm and 3.3676 to 22.056 µg/ml of tungsten (VI) at 374 nm.  The metal ion interferes with the determination of each other in zero order as well as in first order spectrophotometry.  Zero crossing wavelengths are 363 and 373 nm. The optimum condition for maximum colour development and other analytical parameters were evaluated.
Keywords: di hydroxy benzaldehyde, isonicotinoyl hydrazine, Beer’s law & Wavelength etc.

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