Parameter
Polynomial regression
Linear regression
Concentration range(ng/spot)
500 -1200
500 -1200
x
2
-coefficient
-0.0001
-
x-coefficient
4.509
2.890
y-intercept
1,819
2,464
r
2
0.999
0.993
Table1:
Linear and polynomial regression equations obtained from the TLC densitometric method for diclofenac sodium.