Rate of abiotic formation of 1,1-dichloroethylene from 1,1,1-trichloroethane in groundwater |
| |
| Institution: | 1. Department of Chemistry, Pachhunga University College, Aizawl 796 001, Mizoram, India;2. Department of Chemistry, Manipur University, Canchipur, 795003 Imphal, India;1. Physical Acoustics Group, Instituto de Física, Universidade Federal de Alagoas, Maceió, AL 57072-970, Brazil;2. Grupo de Física da Matéria Condensada, Núcleo de Ciências Exatas, Universidade Federal de Alagoas, Arapiraca Alagoas, 57309-005, Brazil;1. Center of Applied Physics, Directorate of Materials Research, Ministry of Higher Education and Scientific Research, Baghdad, Iraq;2. Ministry of Higher Education and Scientific Research, Baghdad, Iraq;1. Dep. de Informática, Pontifícia Universidade Católica do Rio de Janeiro, Brazil;2. Dep. de Computação, Universidade Federal do Ceará, Brazil;3. Instituto TecGraf, Pontifícia Universidade Católica do Rio de Janeiro, Brazil;4. Inst. di Scienza e Tecn. dellInfo., CNR at Pisa, Italy;1. The Dow Company, Midland, MI, 48674, United States;2. Olin Corporation, Midland, MI, 48674, United States;3. Exponent, Midland, MI, 48674, United States;4. CJB Consulting LLC, Loveland, OH, 45140, United States;5. LHP Tox Consult, Midland, MI, 48640, United States |
| |
| Abstract: | The abiotic transformation of the halogenated aliphatic compound, 1,1,1-trichloroethane (TCA), to 1,1-dichloroethylene (1,1-DCE) in groundwater was measured in the laboratory at 20°C and neutral pH. The measured pseudo first-order disappearance rate constant for TCA was 0.11 ± 0.16yr−1 (95% confidence interval). The formation rate constant for 1,1-DCE could be determined with greater precision, and was found to be 0.040 ± 0.003 yr-1. These results indicate the 95% confidence interval for TCA half-life at 20°C and pH 7 in homogeneous solution is 2.8 to 19 yrs. While these results confirm that 1,1-DCE is a product from the abiotic transformation of TCA, other products such as acetic acid are also possible, although they were not measured. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
