Table 14:
Linear regression analysis of the determination of Fe(II) and Co(II) in mixture by second derivative spectrophotometry.
Metal ion determined
Wave length (nm)
Other metal present (
μ
g mL
−1
)
Slope
Intercept
Correlation coefficient
Fe(II)
Co(II)
Fe(II)
436
0.9994
0.589
0.9995
Co(II)
426
0.9999
0.33
0.9998