Singlet Oxygen Analysis in Irradiated Surface Waters

Abstract
A quantitative analysis of singlet oxygen is described, permitting, in combination with actinometry, the determination of quantum yields of photooxydation as well as of singlet oxygen production. The procedure is applied to humic materials dissolved in water which have been shown to be singlet oxygen sensitizers. The quenching of corresponding triplet states by either oxygen or transition metal ions is observed in laser photolysis experiments