John R. Helms

Absorption spectral slopes and slope ratios as indicators of molecular weight, source, and photobleaching of chromophoric dissolved organic matter

John R. Helms, Aron Stubbins, Jason D. Ritchie et al. · Limnology and Oceanography · 2008 · 2.9K citations · Full text

Engineering, Absorption Spectroscopy, Marine Chemistry +24

Photochemical bleaching of oceanic dissolved organic matter and its effect on absorption spectral slope and fluorescence

John R. Helms, Aron Stubbins, E. Michael Perdue et al. · Marine Chemistry · 2013 · 289 citations

Organic Geochemistry, Biogeochemistry, Environmental Chemistry +12

Loss of optical and molecular indicators of terrigenous dissolved organic matter during long-term photobleaching

John R. Helms, Jingdong Mao, Aron Stubbins et al. · Aquatic Sciences · 2014 · 129 citations

Organic Geochemistry, Environmental Chemistry, Engineering +12

Photochemical flocculation of terrestrial dissolved organic matter and iron

John R. Helms, Jingdong Mao, Klaus Schmidt‐Rohr et al. · Geochimica et Cosmochimica Acta · 2013 · 103 citations

Organic Geochemistry, Biogeochemistry, Engineering +6

Ultrahigh resolution mass spectrometric differentiation of dissolved organic matter isolated by coupled reverse osmosis-electrodialysis from various major oceanic water masses

Hongmei Chen, Aron Stubbins, E. Michael Perdue et al. · Marine Chemistry · 2014 · 70 citations

Organic Geochemistry, Chemical Oceanography, Engineering +7