Correlations between dissolved organic matter optical properties and quantum yields of singlet oxygen and hydrogen peroxide.

@article{Dalrymple2010CorrelationsBD,
  title={Correlations between dissolved organic matter optical properties and quantum yields of singlet oxygen and hydrogen peroxide.},
  author={Ren{\'e}e M Dalrymple and Amy K Carfagno and Charles M Sharpless},
  journal={Environmental science & technology},
  year={2010},
  volume={44 15},
  pages={5824-9}
}
Various aquatic dissolved organic matter (DOM) samples produce singlet oxygen (1O2) and hydrogen peroxide (H2O2) with quantum yields of 0.59 to 4.5% (1O2 at 365 nm) and 0.017 to 0.053% (H2O2, 300-400 nm integrated). The two species' yields have opposite pH dependencies and strong, but opposite, correlations with the E2/E3 ratio (A254 divided by A365). Linear regressions allow prediction of both quantum yields from E2/E3 in natural water samples with errors ranging from -3% to 60%. Experimental… CONTINUE READING

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