John R. Helms, Ph.D.

2012 Chemistry and Biochemistry Old Dominion University, Norfolk, VA, United States 
Analytical Chemistry, Biogeochemistry, Chemical Oceanography
"John Helms"
Mean distance: (not calculated yet)


Sign in to add mentor
Jingdong Mao grad student 2012 Old Dominion University
 (Spectroscopic characterization of dissolved organic matter: Insights into composition, photochemical transformation and carbon cycling.)
BETA: Related publications


You can help our author matching system! If you notice any publications incorrectly attributed to this author, please sign in and mark matches as correct or incorrect.

Cao X, Mulholland MR, Helms JR, et al. (2017) A Major Step in Opening the Black Box of High-Molecular-Weight Dissolved Organic Nitrogen by Isotopic Labeling of Synechococcus and Multibond Two-Dimensional NMR. Analytical Chemistry
Avery GB, Foley L, Carroll AL, et al. (2015) Surface waters as a sink and source of atmospheric gas phase ethanol. Chemosphere. 144: 360-365
Mead RN, Barefoot S, Helms JR, et al. (2014) Photodegradation of the antihistamine cetirizine in natural waters. Environmental Toxicology and Chemistry / Setac. 33: 2240-5
Helms JR, Glinski DA, Mead RN, et al. (2014) Photochemical dissolution of organic matter from resuspended sediments: Impact of source and diagenetic state on photorelease Organic Geochemistry. 73: 83-89
Helms JR, Mao J, Chen H, et al. (2014) Spectroscopic characterization of oceanic dissolved organic matter isolated by reverse osmosis coupled with electrodialysis Marine Chemistry
Chen H, Stubbins A, Perdue EM, et al. (2014) Ultrahigh resolution mass spectrometric differentiation of dissolved organic matter isolated by coupled reverse osmosis-electrodialysis from various major oceanic water masses Marine Chemistry. 164: 48-59
Dixon JL, Helms JR, Kieber RJ, et al. (2014) Biogeochemical alteration of dissolved organic material in the Cape Fear River Estuary as a function of freshwater discharge Estuarine, Coastal and Shelf Science. 149: 273-282
Helms JR, Mao J, Stubbins A, et al. (2014) Loss of optical and molecular indicators of terrigenous dissolved organic matter during long-term photobleaching Aquatic Sciences. 76: 353-373
Helms JR, Stubbins A, Perdue EM, et al. (2013) Photochemical bleaching of oceanic dissolved organic matter and its effect on absorption spectral slope and fluorescence Marine Chemistry. 155: 81-91
Helms JR, Mao J, Schmidt-Rohr K, et al. (2013) Photochemical flocculation of terrestrial dissolved organic matter and iron Geochimica Et Cosmochimica Acta. 121: 398-413
See more...