Photoinduced Generation of Hydroxyl Radical in Natural Waters - Photobiogeochemistry of Organic Matter - page 240

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Table 5 The quantum yield of HO ( Φ HO ) of nitrate photolysis as a function of pH and temperature (T)

T (K) pH

4

5 6 7 8 9 10 11

For wavelength 308 nm
278 0.007 ± 0.001 0.008 ± 0.001 0.007 ± 0.001 0.008 ± 0.001 0.007 ± 0.001 0.007 ± 0.001 0.004 ± 0.001

0.008 ± 0.001

0.017 ± 0.001 0.017 ± 0.001 0.016 ± 0.001 0.017 ± 0.001 0.016 ± 0.001 0.014 ± 0.001 0.009 ± 0.001 0.016 ± 0.001 298

0.026 ± 0.003 0.027 ± 0.002 0.028 ± 0.001 0.027 ± 0.002 0.024 ± 0.002 0.015 ± 0.002 0.011 ± 0.001 318 0.028 ± 0.002

0.034 ± 0.003 0.036 ± 0.004 0.035 ± 0.002 0.036 ± 0.003 0.030 ± 0.005 0.017 ± 0.003 0.012 ± 0.001 353 0.038 ± 0.004

Data source (Zellner et al. 1990 )