Abstract

With an energy dispersive X-ray absorption spectrometer, the entire spectrum of interest can be recorded simultaneously. Hence, this method is suitable for time-resolved study of structural or chemical changes in materials which are not easily repeated hundreds or thousands of times. We report a preliminary result of time-resolved (1.0 second resolution) X-ray absorption measurement with the energy dispersive spectrometer for reacting aqueous solutions of Fe (N03)3 and Na2S203 mixed by a stopped-flow method. A time-dependent energy shift of Fe-K absorption edge was observed.

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