When a solution of potassium ferrioxalate containing 0·02% of o-phenanthroline monohydrate and acetate buffer (final pH 3·7) is irradiated with 2537 and 3650 Å light, the absorbance at 5100 Å due to the formation of the ferrous o-phenanthroline complex has been found to increase linearly with dose. The suitability of this system as a more convenient chemical actinometer is discussed here.
K. C. Kurien, J. Chem. Soc. B, 1971, 2081 DOI: 10.1039/J29710002081
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