Marsha K Morgan

Summary

Affiliation: U.S. Environmental Protection Agency
Country: USA

Publications

  1. doi request reprint Temporal variability of pyrethroid metabolite levels in bedtime, morning, and 24-h urine samples for 50 adults in North Carolina
    Marsha K Morgan
    National Exposure Research Laboratory, US EPA, Research Triangle Park, NC, USA Electronic address
    Environ Res 144:81-91. 2016
  2. doi request reprint Predictors of urinary levels of 2,4-dichlorophenoxyacetic acid, 3,5,6-trichloro-2-pyridinol, 3-phenoxybenzoic acid, and pentachlorophenol in 121 adults in Ohio
    Marsha K Morgan
    United States Environmental Protection Agency, National Exposure Research Laboratory, 109 T W Alexander Drive, Research Triangle Park, NC 27713, USA Electronic address
    Int J Hyg Environ Health 218:479-88. 2015
  3. pmc Short-term variability and predictors of urinary pentachlorophenol levels in Ohio preschool children
    Marsha Morgan
    United States Environmental Protection Agency, 109 T W Alexander Drive, Research Triangle Park, NC 27711, USA
    Int J Environ Res Public Health 12:800-15. 2015
  4. pmc Exposures of 129 preschool children to organochlorines, organophosphates, pyrethroids, and acid herbicides at their homes and daycares in North Carolina
    Marsha K Morgan
    National Exposure Research Laboratory, United States Environmental Protection Agency, 109 T W Alexander Drive, Research Triangle Park, NC 27709, USA
    Int J Environ Res Public Health 11:3743-64. 2014
  5. doi request reprint Dietary predictors of young children's exposure to current-use pesticides using urinary biomonitoring
    Marsha K Morgan
    United States Environmental Protection Agency s National Exposure Research Laboratory, 109 T W Alexander Drive, Durham, NC 27711, USA Electronic address
    Food Chem Toxicol 62:131-41. 2013
  6. pmc Children's exposures to pyrethroid insecticides at home: a review of data collected in published exposure measurement studies conducted in the United States
    Marsha K Morgan
    National Exposure Research Laboratory, U S Environmental Protection Agency, Research Triangle Park, NC 27711, USA
    Int J Environ Res Public Health 9:2964-85. 2012
  7. doi request reprint Adult and children's exposure to 2,4-D from multiple sources and pathways
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, Research Triangle Park, North Carolina 27711, USA
    J Expo Sci Environ Epidemiol 18:486-94. 2008
  8. ncbi request reprint An observational study of 127 preschool children at their homes and daycare centers in Ohio: environmental pathways to cis- and trans-permethrin exposure
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, 109 T W Alexander Dr, MD E205 04, Research Triangle Park, NC 27713 4411, USA
    Environ Res 104:266-74. 2007
  9. doi request reprint The reliability of using urinary biomarkers to estimate children's exposures to chlorpyrifos and diazinon
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, Research Triangle Park, North Carolina 27709, USA
    J Expo Sci Environ Epidemiol 21:280-90. 2011
  10. doi request reprint Assessing the quantitative relationships between preschool children's exposures to bisphenol A by route and urinary biomonitoring
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, Research Triangle Park, North Carolina 27713, USA
    Environ Sci Technol 45:5309-16. 2011

Detail Information

Publications19

  1. doi request reprint Temporal variability of pyrethroid metabolite levels in bedtime, morning, and 24-h urine samples for 50 adults in North Carolina
    Marsha K Morgan
    National Exposure Research Laboratory, US EPA, Research Triangle Park, NC, USA Electronic address
    Environ Res 144:81-91. 2016
    ..In addition, the study results can be used to inform the design of exposure characterization strategies in relevant environmental epidemiology studies in the future. ..
  2. doi request reprint Predictors of urinary levels of 2,4-dichlorophenoxyacetic acid, 3,5,6-trichloro-2-pyridinol, 3-phenoxybenzoic acid, and pentachlorophenol in 121 adults in Ohio
    Marsha K Morgan
    United States Environmental Protection Agency, National Exposure Research Laboratory, 109 T W Alexander Drive, Research Triangle Park, NC 27713, USA Electronic address
    Int J Hyg Environ Health 218:479-88. 2015
    ..056) of the adults' ln(urinary PCP) concentrations. In conclusion, specific sociodemographic and lifestyle factors were identified that increased the exposures of these adults to several different pesticides in their daily environments...
  3. pmc Short-term variability and predictors of urinary pentachlorophenol levels in Ohio preschool children
    Marsha Morgan
    United States Environmental Protection Agency, 109 T W Alexander Drive, Research Triangle Park, NC 27711, USA
    Int J Environ Res Public Health 12:800-15. 2015
    ..To adequately assess short-term exposures of children to PCP, several spot urine measurements are likely needed as well as information regarding residence age, seasonality, time spent outdoors, and pet ownership. ..
  4. pmc Exposures of 129 preschool children to organochlorines, organophosphates, pyrethroids, and acid herbicides at their homes and daycares in North Carolina
    Marsha K Morgan
    National Exposure Research Laboratory, United States Environmental Protection Agency, 109 T W Alexander Drive, Research Triangle Park, NC 27709, USA
    Int J Environ Res Public Health 11:3743-64. 2014
    ..6 ng/kg/day), cis/trans-permethrin (12.5 ng/kg/day), and 2,4-D (4.9 ng/kg/day). In conclusion, these children were likely exposed daily to several pesticides from several sources and routes at their homes and daycares. ..
  5. doi request reprint Dietary predictors of young children's exposure to current-use pesticides using urinary biomonitoring
    Marsha K Morgan
    United States Environmental Protection Agency s National Exposure Research Laboratory, 109 T W Alexander Drive, Durham, NC 27711, USA Electronic address
    Food Chem Toxicol 62:131-41. 2013
    ..In conclusion, frequent consumption of fresh apples and fruit juices or chicken/turkey meats were significant dietary predictors of urinary levels of TCP or 3-PBA, respectively...
  6. pmc Children's exposures to pyrethroid insecticides at home: a review of data collected in published exposure measurement studies conducted in the United States
    Marsha K Morgan
    National Exposure Research Laboratory, U S Environmental Protection Agency, Research Triangle Park, NC 27711, USA
    Int J Environ Res Public Health 9:2964-85. 2012
    ..Urinary 3-PBA concentration data confirm that the majority of the children sampled were exposed to one or more pyrethroids...
  7. doi request reprint Adult and children's exposure to 2,4-D from multiple sources and pathways
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, Research Triangle Park, North Carolina 27711, USA
    J Expo Sci Environ Epidemiol 18:486-94. 2008
    ..In addition, our findings suggest that the OH children might have been exposed to higher levels of 2,4-D through the dermal and nondietary routes of exposure than the NC children and the NC and OH adults...
  8. ncbi request reprint An observational study of 127 preschool children at their homes and daycare centers in Ohio: environmental pathways to cis- and trans-permethrin exposure
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, 109 T W Alexander Dr, MD E205 04, Research Triangle Park, NC 27713 4411, USA
    Environ Res 104:266-74. 2007
    ..In conclusion, these children were potentially exposed to low levels of permethrin from several sources, and through several pathways and routes...
  9. doi request reprint The reliability of using urinary biomarkers to estimate children's exposures to chlorpyrifos and diazinon
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, Research Triangle Park, North Carolina 27709, USA
    J Expo Sci Environ Epidemiol 21:280-90. 2011
    ..This information suggests that measurement of urinary TCP did not reliably allow quantitative estimation of the children's everyday environmental exposures to CPF...
  10. doi request reprint Assessing the quantitative relationships between preschool children's exposures to bisphenol A by route and urinary biomonitoring
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, Research Triangle Park, North Carolina 27713, USA
    Environ Sci Technol 45:5309-16. 2011
    ..004) were significant predictors of urinary BPA excretion, collectively explaining 17% of the variability in excretion. Dietary ingestion of BPA accounted for >95% of the children's excreted amounts of urinary BPA...
  11. ncbi request reprint Exposures of preschool children to chlorpyrifos and its degradation product 3,5,6-trichloro-2-pyridinol in their everyday environments
    Marsha K Morgan
    National Exposure Research Laboratory, USEPA, Research Triangle Park, NC 27711, USA
    J Expo Anal Environ Epidemiol 15:297-309. 2005
    ..In conclusion, the results showed that the preschool children were exposed to chlorpyrifos and TCP from several sources, through several pathways and routes. ...
  12. doi request reprint An observational study of the potential for human exposures to pet-borne diazinon residues following lawn applications
    Marsha K Morgan
    USEPA, National Exposure Research Laboratory, Research Triangle Park, NC 27709, USA
    Environ Res 107:336-42. 2008
    ..Lastly, the pet dog appears to be an important pathway for the transfer and translocation of diazinon residues inside the homes and likely exposed occupants through personal contacts (i.e., petting)...
  13. ncbi request reprint An observational study of the potential exposures of preschool children to pentachlorophenol, bisphenol-A, and nonylphenol at home and daycare
    Nancy K Wilson
    Battelle Memorial Institute, 100 Capitola Drive, Suite 301, Durham, NC 27713 4411, USA
    Environ Res 103:9-20. 2007
    ....
  14. ncbi request reprint Aggregate exposures of nine preschool children to persistent organic pollutants at day care and at home
    Nancy K Wilson
    Battelle Memorial Institute, Durham, NC 27713 4411, USA
    J Expo Anal Environ Epidemiol 13:187-202. 2003
    ..The children's potential aggregate doses, calculated from our data, were generally well below established reference doses (RfDs) for those compounds for which RfDs are available...
  15. ncbi request reprint Design and sampling methodology for a large study of preschool children's aggregate exposures to persistent organic pollutants in their everyday environments
    Nancy K Wilson
    Battelle Memorial Institute, Durham, North Carolina, USA
    J Expo Anal Environ Epidemiol 14:260-74. 2004
    ..Field recruitment and data collection began in February 2000 in North Carolina and were completed in November 2001 in Ohio. This paper describes the design strategy, survey sampling, recruiting, and field methods for the CTEPP study...
  16. pmc Review of pesticide urinary biomarker measurements from selected US EPA children's observational exposure studies
    Peter P Egeghy
    Human Exposure and Atmospheric Sciences Division, National Exposure Research Laboratory, Office of Research and Development, U S Environmental Protection Agency, Research Triangle Park, NC 27711, USA
    Int J Environ Res Public Health 8:1727-54. 2011
    ....
  17. doi request reprint Using urinary biomarkers to evaluate polycyclic aromatic hydrocarbon exposure in 126 preschool children in Ohio
    Marsha K Morgan
    a US EPA s National Exposure Research Laboratory, Research Triangle Park, NC, United States
    Int J Environ Health Res 25:628-39. 2015
    ..These children had higher median urinary 1-OHPyr levels compared to other US children (≤ 0.15 ng/mL) in previously published studies, which suggests possible geographical differences in PAH exposure. ..
  18. doi request reprint Population variability of phthalate metabolites and bisphenol A concentrations in spot urine samples versus 24- or 48-h collections
    Krista L Yorita Christensen
    United States Environmental Protection Agency, National Center for Environmental Assessment, Office of Research and Development, Washington, District of Columbia 20460, USA
    J Expo Sci Environ Epidemiol 22:632-40. 2012
    ..However, the analysis also suggests that caution should be exercised when interpreting the high end of spot sample data sets...
  19. doi request reprint Analysis of inflammatory cytokines in human blood, breath condensate, and urine using a multiplex immunoassay platform
    Matthew A Stiegel
    Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
    Biomarkers 20:35-46. 2015
    ..620 to 0.836. Almost all correlations between EBC and blood were positive. This work also represents the first successful within- and between-person evaluation of ultra trace-level inflammatory markers in blood, EBC, and urine...