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One of several substitution products obtained by the action of chlorine on phenol; used as antiseptics.
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This work is focused on spectral changes of phenol, 2-chlorophenol (2CPH), 2-aminophenol (2APH), and 2-nitrophenol (2NPH) in polar protic and aprotic solvents.
Exactly 5 mL of the samples was withdrawn after two hours, filtered, and the absorbance measured with a Shimadzu T70 UV-Vis spectrometer at predetermined wavelengths of maximum absorption ([[lambda].sub.max]) (phenol = 280 nm, 2-chlorophenol = 275 nm, 3-chlorophenol = 300 nm, 4-chlorophenol = 260 nm, methyl orange = 440 nm, and Eriochrome Black T = 200 nm).
Photodegradation of 2-chlorophenol over colloidal [alpha]-feooh supported mesostructured silica nanoparticles: Influence of a pore expander and reaction optimization.
Kinetic, equilibrium and thermodynamic study of 2-chlorophenol adsorption onto Ricinus communis pericarp activated carbon from aqueous solutions.
reported that the magnetic core-shell-shell nanoparticles [Fe.sub.3] [O.sub.4]/Si[O.sub.2] /Ti[O.sub.2] showed high photocatalytic activity toward 2-chlorophenol in wastewater.
Chlorophenols are derived from the uncontrolled use of pesticides, fungicides, and herbicides, as well as processes of degreasing metals, wood processing, and paper bleaching with chlorine, and may even be generated in the potabilization of water as a result of the chlorination of phenols formed by products of the hypochlorite reaction with phenolic acids, with 2-chlorophenol, 2,4-dichlorophenol, and 2,4,6-trichlorophenol as the most frequent occurrences in water designated for human consumption [1, 2].
The standards were obtained from Sigma Aldrich, Inc., and consisted of 4-chloro-3-methylphenol (4C3MP), 2-chlorophenol (2CP), 2,4-dichlorophenol (2,4DCP), pentachlorophenol (PCP), and 2,4,6-trichlorophenol (2,4,6TCP).
An admissible daily dose of individual chlorophenol that may be taken by a man that does not induce carcinogenic changes is 5gg/kg of body weight for 2-chlorophenol, and 3gg/kg of body weight for 2,4-dichlorophenol, 2,4,6-trichlorophenol and pentachlorophenol [79].
Huang, "Role of goethite dissolution in the oxidation of 2-chlorophenol with hydrogen peroxide," Chemosphere, vol.
Ismat-Shah, "Photocatalytic degradation of 2-chlorophenol by Co-doped Ti[O.sub.2] nanoparticles," Applied Catalysis B, vol.
Selli, "Reaction paths and efficiency of photocatalysis on Ti[O.sub.2] and of [H.sub.2][O.sub.2] photolysis in the degradation of 2-chlorophenol," Journal of Hazardous Materials, vol.