Ultraviolet versus conductivity detectors

The effect is easily achieved in the ion chromatography system where the preferred buffer solution (potassium hydrogen phthalate (5 x 10 M at pH 4.6) has a strong ultraviolet response with Xmax at 28Qnm. At this 

Source Reproduced with permission from the American Chemical Society [39] 

An ultraviolet detector used in series with a conductivity detector is the basis for a method [39] for the determination of anions in non saline waters. This combination of detectors greatly increases the amount of information that can be collected on a given sample. The application of ultraviolet detection has the following advantages  

Sulphide cannot be detected under normal ion chromatographic conditions. It is converted into hydrogen sulphide in the suppressor 

Anion Retention time (min) UV octive UV detection limit (mg L - ) UV detector position Wovelength (tun) 

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