Binding of 4-monochlorophenol to soil

Article Abstract:

Nonextractable binding of monochlorophenol to two sandy surface soils was observed in sorption experiments. Soil-associated 4-monochlorophenol (4-MCP) was significantly enhanced in the presence of oxygen in sorption experiments. Water and solvent extractions were performed on the sorbed 4-MCP. Almost 15% of the soil-associated 4-MCP remained unextracted. The amount of nonextractable 14C was reduced after autoclaving the soil prior to 4-MCP addition, while the addition of H2O2 resulted in a 4.4-fold increase in 4-MCP binding.

Analysis, Chlorophenols, Cooperative binding (Biochemistry)

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Tropospheric degradation products of novel hydrofluoropolyethers

Article Abstract:

The photooxidation of hydrofluoropolyethers (HFPEs), in the presence of chlorine atoms, yields C(O)F2 at molar yields that are initially closest to the number of carbon atoms in the original HFPEs. The implications are that such degradation reactions occurring in the troposphere by way of reaction with OH radicals will also be close to the number of carbon atoms in the original HFPEs.

Research and Development in the Physical, Engineering, and Life Sciences, All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Air Pollution Control R&D, Fluorocarbons, Air pollution research, Pollution control research, Organofluorine compounds, Organic fluorine compounds

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