Potentiometric Determination of Urea and Nitric Acid using Urea Nitrate as an Electro Active Material-its Analytical Applications
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Date
2010
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Abstract
A heteroueneous precipitate have been as ion carriers tor the
preparation of urea and oxalic acid selective membrane sensor. The
electrodes gisc near-Nemstian response in the linear concentration range
of IM to lx 10"’ M \'.iih detection limits of the orders of 10 ' M. The
stable potentiometric signals are obtained \sith in a short time period of
3 seconds. I’he effect ofp H and th'e effect of medium ha\e been studied,
found to give a better responses selectivits coefficient \alues
K K
(log urea )and(log Nitric acid ) esaluated using fixed interference
method. I'he sensors luise also been used as urea determination m
fertilizers