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Photolytic degradation of fluoroquinolone carboxylic acids in aqueous solution

Part I: Primary photoproducts and half-lives (ESPR 1/1997, pp. 10–15) Part II: Isolation and structural elucidation of polar photometabolites (ESPR 2/1997, pp. 61–67)

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Abstract

Subsequent to irradiation with a xenon lamp simulating sunlight, fluoroquinolone carboxylic acids in aqueous solution form polar pyridone dicarboxylic and tricarboxylic acids. After liquid/liquid partition with chloroform/water these substances can be isolated by ion exchange chromatography of the aqueous phase. They can be regarded as intermediate compounds on the route to a complete photomineralization. The structural elucidation is performed by such mass spectroscopic methods as MS, GC/MS and HPLC/MS, whereby HPLC/MS shows the highest reliability. Additionally1H- and13C-NMR measurements confirm the structure of the main polar degradation product.

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Authors and Affiliations

  1. Department of Ecological Chemistry and Ecotoxicology, University of Kassel, Nordbahnhofstraße la, D-37213, Witzenhausen, Germany

    Jürgen Burhenne, Marc Ludwig & Michael Spiteller

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  1. Jürgen Burhenne
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  2. Marc Ludwig
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  3. Michael Spiteller
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Burhenne, J., Ludwig, M. & Spiteller, M. Photolytic degradation of fluoroquinolone carboxylic acids in aqueous solution. Environ. Sci. & Pollut. Res. 4, 61–67 (1997). https://doi.org/10.1007/BF02986278

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  • DOI: https://doi.org/10.1007/BF02986278

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