Reductive dechlorination of hexachlorobenzene in wetland soils

Document Type

Article

Publication Date

1-1-2015

Abstract

This chapter presents a study that determines the degradation potential of hexachlorobenzene (HCB) in soil from two wetland environments; a forested bottomland hardwood and a freshwater marsh. Reductive dechlorination may be an important transformation process in wetlands. The chapter also presents evidence on the occurrence of this degradation process in these wetland soils. Reductive dechlorination of HCB was observed in both the bottomland hardwood soil and the freshwater marsh soil after lag periods of approximately 7 and 5 wk, respectively. The soil containing a thin film of HCB on the surface. After the addition of the HCB to the microcosm, the air stream leaving the flask was connected to a sampling train consisting of a tube containing activated C and two traps of 1.0 N NaOH to trap evolved CO2. At selected intervals replicate flasks from the batch experiments were sacrificed and extracted for 18 h with 20 mL of hexane:acetone in Teflon centrifuge tubes.

Publication Source (Journal or Book title)

Sorption and Degradation of Pesticides and Organic Chemicals in Soil

First Page

145

Last Page

152

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