Friday , 23 August 2019

Second order derivative spectrophotometry for simultaneous determination of Pd(II) and W(VI) using 3,4-dihydroxybenzaldehyde isonicotinoyl hydrazone  (DHBINH)

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 second order derivative spectrophotometric method is developed for the simultaneous determination of palladium (II) and tungsten (VI) using 3,4-DHBINH without any prior separation.  Beer’s law is obeyed between 0.2128 to 3.192 µg/ml of palladium (II) at 362 nm and 0.3676 to 5.514 µg/ml of tungsten (VI) at 374 nm.  The metal ion interfere with the determination of each other in zero order as well as in first order spectrophotometry.  Zero crossing wavelengths are 366 and 373 nm. The optimum condition for maximum color development and other analytical parameters were evaluated.
Keywords: 3,4-DHBINH, Pd(II), W(VI), second order spectrophotometry &Wavelength etc.

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