The software Table Curve 2D v5.01.01 was used for
processing the obtained data. This absorbance versus concentration
plot shows a straight line (CNO2
−
=8.24 Abs+0.16; here Abs is
the absorbance value) with excellent correlation coefficient value
of 0.999. The slope and the intercept for this straight line were
0.1213 and 0.0197 respectively