science-softCon uv/vis+ spectra data base; www.uv-spectra.de; (C) science-softCon 2016 Substance: difloxacin Other Names: Formula: C21H19F2N3O3 CAS-No.: 98106-17-3 PubChem: CID 56206 Study: photolysis, molar absorptivity Authors: S. Snowberger, H. Adejumo, K. He, K.P. Mangalgiri, M. Hopanna, A.D. Soares, L. Blaney Title: Direct Photolysis of Fluoroquinolone Antibiotics at 253.7 nm: Specific Reaction Kinetics and Formation of Equally Potent Fluoroquinolone Antibiotics Journal/Source: Environ. Sci. Technol., 50 (17), 9533-9542, (2016); DOI: 10.1021/acs.est.6b01794 Data: diagram, table Energy/Wavelength range: 253.7 nm Resolution: Temperature: 298 K Temperature dependence: no Pressure/Concentration: Phase: aqueous solution pH: 2 - 12 (pH was controlled using 10 mM phosphate buffer) Comments: The apparent molar absorptivity and fluence-based pseudo-first-order rate constants for transformation of the six fluoroquinolones by direct photolysis at 253.7 nm were determined for the pH 2-12 range. The apparent molar absorptivity was modeled as a function of pH by assigning each protonated/deprotonated species a specific molar absorptivity. Author to whom correspondence should be addressed: (e-mail address):