Deterioration (1) By-products (1) Oxidation (1) Price-earnings ratio (1) Ultraviolet radiation (1) Spleen (1) School credits (1) Roads (1) Photons (1) Pesticides (1) Pension trusts (1) Ozonization (1) Ozone (1) Licenses (1) Irradiation (1) Hydrogen-ion concentration (1) Hydrogen (1) High performance liquid chromatography (1) Hand (1) Dilemma (1) Commercial products (1) Chlorine (1) Chlorination (1) Bromine (1) Atoms (1) Absorption (1) Photodegradation (1) Yields (1) Processing (1) Effectiveness (1)