Spectral versus natural bandwidth

This is perhaps the least understood of the commonly set variables. The ability of a spectrophotometer to (a) resolve peaks, that is to distinguish between two absorption bands close together, and (b) to measure their intensity accurately, is 

A rarely seen graph, allowing errors in peak height measurements to be predicted, is shown in Rgure 12. This shows the dependence of the absorbance peak magnitude on the ratio of the spectral bandwidth to the natural band- 

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