Treating Soil Solution Samplers To Prevent Microbial Removal of Analytes

  title={Treating Soil Solution Samplers To Prevent Microbial Removal of Analytes},
  author={David L. Lewis and Alexis Simons and W. B. Moore and D. Gattie},
  journal={Applied and Environmental Microbiology},
  pages={1 - 5}
  • David L. Lewis, Alexis Simons, +1 author D. Gattie
  • Published 1992
  • Medicine, Chemistry
  • Applied and Environmental Microbiology
Soil microorganisms colonizing soil water sampling devices (lysimeters) reduced concentrations of biodegradable organic chemicals, including 2,4-dichlorophenoxyacetic acid methyl ester, alachlor, methyl m-chlorobenzoate, and metolachlor as water entered through porous ceramic cups. In some cases, losses exceeded 99%. Additions of either a biocide (sodium hypochlorite) or a bacteriostat (copper salt) prevented microbial activity so that concentrations of test chemicals inside lysimeters equaled… Expand
Review of vadose zone soil solution sampling techniques
Understanding the composition and fluxes of vadose zone soil water is extremely important to many environmental studies, and hence the monitoring of soil solution is of basic interest for differentExpand
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Abstract Because the widely used ceramic cups are reported to release, adsorb, and filter dissolved nutrients from soil solution samples, inert cups made of poly(tetrafluoroethene) (PTFE) areExpand
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Why EPA Wasn't Prepared for the Gulf Oil Spill
the U.S. Environmental Protection Agency transferred me to the Department of Marine Sciences at the University of Georgia, in part, to investigate potential oil spills that could contaminate the GulfExpand
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This chapter presents commonly applied direct methods for in situ solute extraction. The chapter also provides a comprehensive overview of common and advanced indirect methods and sensors forExpand


Soil Solution Nutrient Concentrations Sampled with Tension and Zero-Tension Lysimeters: Report of Discrepancies1
Lysimeters were used to sample soil solutions in an ecosystem-level study of nutrient cycling in a southern Appalachian deciduous forest watershed. Four lysimeters were installed at each of 16Expand
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Effects of heavy metals on aerobic microbial degradation rates of organic chemicals appeared to be considerably more inhibitory to the biodegradation of an organic chemical than high concentrations of microbially toxic organics studied previously. Expand
Laboratory procedure for determining substrate removal rate coefficients for biofilms
Abstract Although numerous techniques have been standardized for assessing the metabolic activities of free-living (suspendent) microorganisms, little corresponding methodoloty has been developed forExpand
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Abstract A variety of predictive models are being applied to evaluate the transport and transformation of pesticides in the environment. These include well known models such as the Pesticide RootExpand
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Two unknown bacterial isolants were obtained from enriched soils and cultured on media containing detergent compounds as sole sources of carbon, and three of five phenyl-placement isomers of DBS were excellent substrates for growth of C12B, but isomers with phenyl placement at carbon 4 or 5 were toxic and killed the bacteria. Expand
Prediction of Substrate Removal Rates of Attached Microorganisms and of Relative Contributions of Attached and Suspended Communities at Field Sites
  • David L. Lewis, D. Gattie
  • Medicine, Chemistry
  • Applied and environmental microbiology
  • 1988
Under conditions of mass transport limitation, the contributions of attached microorganisms relative to total microbial activities at various field sites were related to the ratio of water velocity, U, and depth, D, showing that historical definitions of ecosystems according to flow and depth characteristics are also valid for describing the process-related structure of ecosystems. Expand
A stainless-steel solution sampler for monitoring pesticides in the vadose zone
  • Soil Sci. Soc. Am. J. 50:263-265
  • 1986
Ground water monitoring : procedures , equipment and applications
  • 1983
Ground water monitoring: procedures, equipment and applications. Timco Manufacturing, Inc., Prairie du Sac, Wis
  • 1983
Monitoring in the vadose zone: a review of technical elements and methods
  • 1980