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Reactions of singlet oxygen in humic waters
Author(s) -
BAXTER R. M.,
CAREY J. H.
Publication year - 1982
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1982.tb00622.x
Subject(s) - singlet oxygen , photochemistry , chemistry , environmental chemistry , oxygen , singlet state , active oxygen , histidine , organic chemistry , excited state , physics , enzyme , nuclear physics
SUMMARY. The oxidation of 2, 5‐diniethylfuran (DMF) to cis‐1, 2‐ diacetylethylene (DAE) is a specific test for singlet oxygen ( 1 O 2 ). A method has been developed for the measurement of DAB by direct injection gas chromatography. By the use of this method, the photochemical generation of 1 O2 has been demonstrated in samples of two Canadian humic waters. Two other photochemical reactions probably mediated by 1 O 2 generation, the oxidation of histidine and the inactivation of a‐chymotrypsin, have been demonstrated in these waters. The possible ecological and environmental implications of these findings are discussed.