Douglas Hayward

Summary

Affiliation: Food and Drug Administration
Country: USA

Publications

  1. doi request reprint Multiresidue pesticide analysis of botanical dietary supplements using salt-out acetonitrile extraction, solid-phase extraction cleanup column, and gas chromatography-triple quadrupole mass spectrometry
    Douglas G Hayward
    US Food and Drug Administration, Center for Food Safety and Applied Nutrition, College Park, Maryland 20740 3835, United States
    Anal Chem 85:4686-93. 2013
  2. ncbi request reprint Multiresidue pesticide analysis in ginseng and spinach by nontargeted and targeted screening procedures
    Douglas G Hayward
    U S Food and Drug Administration, 5100 Paint Branch Pkwy, College Park, MD 20740, USA
    J AOAC Int 94:1741-51. 2011
  3. ncbi request reprint Polybrominated diphenyl ethers and polychlorinated biphenyls in commercially wild caught and farm-raised fish fillets in the United States
    Douglas Hayward
    US Food and Drug Administration, 5100 Paint Branch Parkway, College Park, MD 20740, USA
    Environ Res 103:46-54. 2007
  4. doi request reprint Organohalogen and organophosphorous pesticide method for ginseng root--a comparison of gas chromatography-single quadrupole mass spectrometry with high resolution time-of-flight mass spectrometry
    Douglas G Hayward
    U S Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Regulatory Science, 5100 Paint Branch Parkway, HFS 706, College Park, Maryland 20740 5350, USA
    Anal Chem 81:5716-23. 2009
  5. doi request reprint Development and interlaboratory validation of a QuEChERS-based liquid chromatography-tandem mass spectrometry method for multiresidue pesticide analysis
    Jon Wong
    Center for Food Safety and Applied Nutrition, US Food and Drug Administration, College Park, Maryland 20740 3835, USA
    J Agric Food Chem 58:5897-903. 2010

Detail Information

Publications5

  1. doi request reprint Multiresidue pesticide analysis of botanical dietary supplements using salt-out acetonitrile extraction, solid-phase extraction cleanup column, and gas chromatography-triple quadrupole mass spectrometry
    Douglas G Hayward
    US Food and Drug Administration, Center for Food Safety and Applied Nutrition, College Park, Maryland 20740 3835, United States
    Anal Chem 85:4686-93. 2013
    ..7 and 2800 μg/kg. Validation with these botanicals demonstrated the extent of this method's applicability for screening 310 pesticides in a wide array of botanical dietary supplements. ..
  2. ncbi request reprint Multiresidue pesticide analysis in ginseng and spinach by nontargeted and targeted screening procedures
    Douglas G Hayward
    U S Food and Drug Administration, 5100 Paint Branch Pkwy, College Park, MD 20740, USA
    J AOAC Int 94:1741-51. 2011
    ..Improvements to instrumentation, methods, and software are needed for efficient use of nontargeted screens in parallel with triple quadrupole MS...
  3. ncbi request reprint Polybrominated diphenyl ethers and polychlorinated biphenyls in commercially wild caught and farm-raised fish fillets in the United States
    Douglas Hayward
    US Food and Drug Administration, 5100 Paint Branch Parkway, College Park, MD 20740, USA
    Environ Res 103:46-54. 2007
    ..A Wilcoxon rank sum test showed no significant difference in the CB-153/BDE-47 ratios between farmed raised and all species of wild salmon combined, but was significant between bluefish and rockfish, farmed raised salmon or wild salmon...
  4. doi request reprint Organohalogen and organophosphorous pesticide method for ginseng root--a comparison of gas chromatography-single quadrupole mass spectrometry with high resolution time-of-flight mass spectrometry
    Douglas G Hayward
    U S Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Regulatory Science, 5100 Paint Branch Parkway, HFS 706, College Park, Maryland 20740 5350, USA
    Anal Chem 81:5716-23. 2009
    ..No significant differences were found in the concentrations measured for these pesticides on commercial ginsengs using either of the two GC/MS techniques...
  5. doi request reprint Development and interlaboratory validation of a QuEChERS-based liquid chromatography-tandem mass spectrometry method for multiresidue pesticide analysis
    Jon Wong
    Center for Food Safety and Applied Nutrition, US Food and Drug Administration, College Park, Maryland 20740 3835, USA
    J Agric Food Chem 58:5897-903. 2010
    ..The study also showed that QuEChERS samples should be analyzed as soon as prepared or stored in a freezer to avoid any adverse affect on the analytes evaluated...