The procedure calls for analysis at a wavelength where the absorbance is a relative maximum (we recorded our absorbance values at the maximum wavelength for this solution which happened to be 455nm). Suppse there are one or more interfering species in a solution, which also absorb more or less strongly at this same wavelength. How could/should you deal with such a situation of overlapping absorbances?
So yes using spectrophotometric method, how do i avoid overlapping absorbances?