||Abiotic transformation of carbon tetrachloride at mineral surfaces /
Kriegman-King, Michelle. ;
||Stanford Univ., CA. Dept. of Civil Engineering.;Robert S. Kerr Environmental Research Lab., Ada, OK.
|| U.S. Environmental Protection Agency, Robert S. Kerr Environmental Research Laboratory,
Carbon tetrachloride--Deterioration. ;
Chlorides--Environmental aspects--United States.
Carbon tetrachloride ;
Water pollution ;
Iron compounds ;
Surface chemistry ;
Anaerobic conditions ;
Hydrogen sulfide ;
Halogen organic compounds ;
Water chemistry ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||52 pages : illustrations ; 28 cm
The report addresses the ability of natural mineral surfaces to abiotically transform halogenated organic compounds in subsurface environments. The research focuses on carbon tetrachloride (CC14) as the halogenated organic and biotite, vermiculite, and pyrite as the mineral surfaces. The CCl4 transformation rates and products were quantified under different environmental conditions. The disappearance of CCl4 was significantly faster in the presence of mineral surfaces than in homogeneous solution. In systems containing the sheet silicates and HS-, the rate of reaction was dependent on the temperature, hydrogen sulfide ion concentration, surface concentration, and Fe(II) content in the minerals.
Caption title. "February 1994." "EPA/600/SR-94/018." Includes bibliographical references. Microfiche.