Paul M Bradley

Summary

Affiliation: U.S. Geological Survey
Country: USA

Publications

  1. doi request reprint Intra- and inter-basin mercury comparisons: Importance of basin scale and time-weighted methylmercury estimates
    Paul M Bradley
    U S Geological Survey, 720 Gracern Rd, Columbia, SC 29210, USA
    Environ Pollut 172:42-52. 2013
  2. pmc Shallow groundwater mercury supply in a Coastal Plain stream
    Paul M Bradley
    U S Geological Survey, Columbia, South Carolina, United States
    Environ Sci Technol 46:7503-11. 2012
  3. pmc Humic acids as electron acceptors for anaerobic microbial oxidation of vinyl chloride and dichloroethene
    P M Bradley
    U S Geological Survey, Stephenson Center, Columbia, South Carolina 29210, USA
    Appl Environ Microbiol 64:3102-5. 1998
  4. doi request reprint Potential for 4-n-nonylphenol biodegradation in stream sediments
    Paul M Bradley
    US Geological Survey, Columbia, SC 29210 7651, USA
    Environ Toxicol Chem 27:260-5. 2008
  5. ncbi request reprint Biodegradation of 17beta-estradiol, estrone and testosterone in stream sediments
    Paul M Bradley
    U S Geological Survey, 720 Gracern Rd, Suite 129, Columbia, South Carolina 29210 7651, USA
    Environ Sci Technol 43:1902-10. 2009
  6. ncbi request reprint Biotransformation of caffeine, cotinine, and nicotine in stream sediments: implications for use as wastewater indicators
    Paul M Bradley
    U S Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210 7651, USA
    Environ Toxicol Chem 26:1116-21. 2007
  7. doi request reprint Flood hydrology and methylmercury availability in coastal plain rivers
    Paul M Bradley
    US Geological Survey, 720 Gracern Rd, Suite 129, Columbia, South Carolina 29210 7651, United States
    Environ Sci Technol 44:9285-90. 2010
  8. pmc Chloroethene biodegradation in sediments at 4 degrees C
    P M Bradley
    U S Geological Survey, 720 Gracern Rd, Suite 129, Columbia, SC 29210, USA
    Appl Environ Microbiol 71:6414-7. 2005
  9. ncbi request reprint TBA biodegradation in surface-water sediments under aerobic and anaerobic conditions
    Paul M Bradley
    U S Geological Survey, 720 Gracern Rd, Suite 129, Columbia, South Carolina 29210 7651, USA
    Environ Sci Technol 36:4087-90. 2002
  10. doi request reprint Spatial and seasonal variability of dissolved methylmercury in two stream basins in the eastern United States
    Paul M Bradley
    US Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210 7651, United States
    Environ Sci Technol 45:2048-55. 2011

Detail Information

Publications28

  1. doi request reprint Intra- and inter-basin mercury comparisons: Importance of basin scale and time-weighted methylmercury estimates
    Paul M Bradley
    U S Geological Survey, 720 Gracern Rd, Columbia, SC 29210, USA
    Environ Pollut 172:42-52. 2013
    ..Results suggest reasonable scalability and inter-comparability for different basin sizes if wetland area or related MeHg-source-area metrics are considered...
  2. pmc Shallow groundwater mercury supply in a Coastal Plain stream
    Paul M Bradley
    U S Geological Survey, Columbia, South Carolina, United States
    Environ Sci Technol 46:7503-11. 2012
    ..These results illustrate the importance of riparian wetland/floodplain areas as sources of fluvial MeHg and of groundwater Hg transport as a fundamental control on Hg supply to Coastal Plain streams...
  3. pmc Humic acids as electron acceptors for anaerobic microbial oxidation of vinyl chloride and dichloroethene
    P M Bradley
    U S Geological Survey, Stephenson Center, Columbia, South Carolina 29210, USA
    Appl Environ Microbiol 64:3102-5. 1998
    ..The results indicate that waterborne contaminants can be oxidized by using humic acid compounds as electron acceptors and suggest that natural aquatic systems have a much larger capacity for contaminant oxidation than previously thought...
  4. doi request reprint Potential for 4-n-nonylphenol biodegradation in stream sediments
    Paul M Bradley
    US Geological Survey, Columbia, SC 29210 7651, USA
    Environ Toxicol Chem 27:260-5. 2008
    ..These results suggest WWTP procedures that maximize the delivery of dissolved oxygen while minimizing the release of BOD to stream receptors favor efficient biodegradation of 4-NP contaminants in wastewater-impacted stream environments...
  5. ncbi request reprint Biodegradation of 17beta-estradiol, estrone and testosterone in stream sediments
    Paul M Bradley
    U S Geological Survey, 720 Gracern Rd, Suite 129, Columbia, South Carolina 29210 7651, USA
    Environ Sci Technol 43:1902-10. 2009
    ....
  6. ncbi request reprint Biotransformation of caffeine, cotinine, and nicotine in stream sediments: implications for use as wastewater indicators
    Paul M Bradley
    U S Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210 7651, USA
    Environ Toxicol Chem 26:1116-21. 2007
    ..The potential for in situ biotransformation must be considered if these compounds are employed as markers to identify the sources and track the fate of wastewater compounds in surface-water systems...
  7. doi request reprint Flood hydrology and methylmercury availability in coastal plain rivers
    Paul M Bradley
    US Geological Survey, 720 Gracern Rd, Suite 129, Columbia, South Carolina 29210 7651, United States
    Environ Sci Technol 44:9285-90. 2010
    ....
  8. pmc Chloroethene biodegradation in sediments at 4 degrees C
    P M Bradley
    U S Geological Survey, 720 Gracern Rd, Suite 129, Columbia, SC 29210, USA
    Appl Environ Microbiol 71:6414-7. 2005
    ..Microbial anaerobic oxidation of [1,2-14C]cis-dichloroethene and [1,2-14C]vinyl chloride to 14CO2 also was observed under these conditions...
  9. ncbi request reprint TBA biodegradation in surface-water sediments under aerobic and anaerobic conditions
    Paul M Bradley
    U S Geological Survey, 720 Gracern Rd, Suite 129, Columbia, South Carolina 29210 7651, USA
    Environ Sci Technol 36:4087-90. 2002
    ..No degradation of [U-14C] TBA was observed under methanogenic or Fe(III)-reducing conditions...
  10. doi request reprint Spatial and seasonal variability of dissolved methylmercury in two stream basins in the eastern United States
    Paul M Bradley
    US Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210 7651, United States
    Environ Sci Technol 45:2048-55. 2011
    ....
  11. ncbi request reprint Effect of redox conditions on MTBE biodegradation in surface water sediments
    P M Bradley
    US Geological Survey, Columbia, South Carolina 29210 7651, USA
    Environ Sci Technol 35:4643-7. 2001
    ..Thus, anaerobic bed sediment microbial processes may provide a significant environmental sink for MTBE in surface water systems throughout the United States...
  12. ncbi request reprint Widespread potential for microbial MTBE degradation in surface-water sediments
    P M Bradley
    U S Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210 7651, USA
    Environ Sci Technol 35:658-62. 2001
    ..Thus aerobic bed sediment microbial processes may provide a significant environmental sink for MTBE in surface water systems throughout the United States and may contribute to the reported transience of MTBE in some surface waters...
  13. pmc Methyl t-butyl ether mineralization in surface-water sediment microcosms under denitrifying conditions
    P M Bradley
    U S Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210 7651, USA
    Appl Environ Microbiol 67:1975-8. 2001
    ..Results indicate that bed sediment microorganisms can effectively degrade MTBE to nontoxic products under denitrifying conditions...
  14. ncbi request reprint Optimizing stream water mercury sampling for calculation of fish bioaccumulation factors
    Karen Riva-Murray
    U S Geological Survey, 425 Jordan Road, Troy, New York 12180, United States
    Environ Sci Technol 47:5904-12. 2013
    ..These findings indicate that streamwater Hg collection can be optimized by evaluating site-specific FMeHg-UMeHg relations, intra-annual temporal variation in their concentrations, and streamflow-Hg dynamics...
  15. pmc Influence of dietary carbon on mercury bioaccumulation in streams of the Adirondack Mountains of New York and the Coastal Plain of South Carolina, USA
    Karen Riva-Murray
    U S Geological Survey, 425 Jordan Road, Troy, NY 12180, USA
    Ecotoxicology 22:60-71. 2013
    ..Such influence must be considered when selecting lower trophic level consumers as sentinels of MeHg bioaccumulation for comparison within and among sites...
  16. pmc Spatial patterns of mercury in macroinvertebrates and fishes from streams of two contrasting forested landscapes in the eastern United States
    Karen Riva-Murray
    US Geological Survey, Troy, NY 12180, USA
    Ecotoxicology 20:1530-42. 2011
    ....
  17. ncbi request reprint Fate of sulfamethoxazole, 4-nonylphenol, and 17beta-estradiol in groundwater contaminated by wastewater treatment plant effluent
    Larry B Barber
    U S Geological Survey, 3215 Marine Street, Boulder, Colorado 80303, USA
    Environ Sci Technol 43:4843-50. 2009
    ..There was little difference in mineralization potential between sites...
  18. ncbi request reprint Rapid evolution of redox processes in a petroleum hydrocarbon-contaminated aquifer
    Francis H Chapelle
    US Geological Survey, Columbia, SC 29210, USA
    Ground Water 40:353-60. 2002
    ....
  19. doi request reprint Biodegradation and attenuation of steroidal hormones and alkylphenols by stream biofilms and sediments
    Jeffrey H Writer
    U S Geological Survey, 3215 Marine Street, Boulder, Colorado 80303, USA
    Environ Sci Technol 45:4370-6. 2011
    ....
  20. doi request reprint Assessing the relative bioavailability of DOC in regional groundwater systems
    Francis H Chapelle
    US Geological Survey, South Carolina Water Science Center, Columbia, SC 29210, USA
    Ground Water 51:363-72. 2013
    ..These results are uniformly consistent with the hypothesis that the hyperbolic behavior of DOC-DO plots, as quantified by the RRQ metric, can be an indicator of relative DOC bioavailability in groundwater systems...
  21. doi request reprint Dissolved oxygen as an indicator of bioavailable dissolved organic carbon in groundwater
    Francis H Chapelle
    U S Geological Survey, South Carolina Water Science Center, Columbia, SC 29210, USA
    Ground Water 50:230-41. 2012
    ..This, in turn, suggests that the presence/absence of a hyperbolic DO-DOC relationship may be a qualitative indicator of relative DOC bioavailability in groundwater systems...
  22. ncbi request reprint Distinguishing iron-reducing from sulfate-reducing conditions
    Francis H Chapelle
    U S Geological Survey, South Carolina Water Science Center, Columbia, SC 29210, USA
    Ground Water 47:300-5. 2009
    ..These observations suggest that Fe(2+)/H(2)S mass ratios may provide useful information concerning the occurrence and distribution of iron and sulfate reduction in ground water systems...
  23. ncbi request reprint Hydrologic significance of carbon monoxide concentrations in ground water
    Francis H Chapelle
    U S Geological Survey, 720 Gracern Road, Suite 129, Columbia, SC 29210, USA
    Ground Water 45:272-80. 2007
    ....
  24. doi request reprint MTBE, TBA, and TAME attenuation in diverse hyporheic zones
    James E Landmeyer
    US Geological Survey, South Carolina Water Science Center, 720 Gracern Road, Suite 129, Columbia, SC 29210, USA
    Ground Water 48:30-41. 2010
    ....
  25. ncbi request reprint A simple pore water hydrogen diffusion syringe sampler
    Don A Vroblesky
    U S Geological Survey, 720 Gracern Road, Columbia, SC 29210 7651, USA
    Ground Water 45:798-802. 2007
    ....
  26. doi request reprint Biochemical indicators for the bioavailability of organic carbon in ground water
    Francis H Chapelle
    U S Geological Survey, South Carolina Water Science Center, Columbia, SC 29210, USA
    Ground Water 47:108-21. 2009
    ..These observations suggest that biochemical indicators such as THNS and THAA may provide information concerning the bioavailability of organic carbon present in ground water that is not available from TOC measurements alone...
  27. ncbi request reprint Methyl tert-butyl ether biodegradation by indigenous aquifer microorganisms under natural and artificial oxic conditions
    J E Landmeyer
    U S Geological Survey, Columbia, South Carolina 29210 7651, USA
    Environ Sci Technol 35:1118-26. 2001
    ..These results indicate that microorganisms indigenous to the groundwater system at this site can degrade milligram per liter concentrations of MTBE under natural and artificial oxic conditions...
  28. ncbi request reprint A hydrogen-based subsurface microbial community dominated by methanogens
    Francis H Chapelle
    US Geological Survey, Columbia, South Carolina 29210, USA
    Nature 415:312-5. 2002
    ..These results demonstrate that hydrogen-based methanogenic communities do occur in Earth's subsurface, providing an analogue for possible subsurface microbial ecosystems on other planets...