Natural attenuation of N-nitrosodimethylamine in soil and groundwater
- and others
N-nitrosodimethylamine (NMDA) has been detected in groundwater and in the influent as well as effluent from the Rocky Mountain Arsenal (RMA) North Boundary Treatment System (NTBS). Since nitrosamines possess carcinogenic, teratogenic, mutagenic, and hepatotoxic properties at low concentrations, their presence in groundwater is disconcerting. However, even though NDMA has been found in the water samples collected from observation wells, it has not been detected in any of the off-post wells. Therefore, the abundance of NDMA-degrading populations and the rate and extent of mineralization of NDMA by the microorganisms in the granulated activated carbon (GAC) absorber units, recharge trenches, and saturated aquifer soils was investigated in this study. A significant activity of NDMA-degrading microbes was detected in these samples, which suggests that microbial degradation may be a major cause of NDMA attenuation in natural systems. The results of microbial enumerations and biodegradation studies will be presented in this presentation.
- OSTI ID:
- 210423
- Report Number(s):
- CONF-9509139--
- Country of Publication:
- United States
- Language:
- English
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