John R. Helms

3.7k total citations · 1 hit paper
20 papers, 2.9k citations indexed

About

John R. Helms is a scholar working on Oceanography, Industrial and Manufacturing Engineering and Ecology. According to data from OpenAlex, John R. Helms has authored 20 papers receiving a total of 2.9k indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Oceanography, 4 papers in Industrial and Manufacturing Engineering and 4 papers in Ecology. Recurrent topics in John R. Helms's work include Marine and coastal ecosystems (13 papers), Atmospheric chemistry and aerosols (4 papers) and Marine Biology and Ecology Research (4 papers). John R. Helms is often cited by papers focused on Marine and coastal ecosystems (13 papers), Atmospheric chemistry and aerosols (4 papers) and Marine Biology and Ecology Research (4 papers). John R. Helms collaborates with scholars based in United States, Chile and India. John R. Helms's co-authors include Kenneth Mopper, Aron Stubbins, Elizabeth C. Minor, David J. Kieber, Jason D. Ritchie, E. Michael Perdue, Hongmei Chen, Nelson W. Green, Jingdong Mao and Klaus Schmidt‐Rohr and has published in prestigious journals such as Analytical Chemistry, Geochimica et Cosmochimica Acta and Journal of Hazardous Materials.

In The Last Decade

John R. Helms

19 papers receiving 2.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

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

2008 2.3k citations John R. Helms, Aron Stubbins et al. Limnology and Oceanography profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
John R. Helms United States	12	2.1k	903	606	560	528	20	2.9k
Jason D. Ritchie United States	5	1.9k 0.9×	911 1.0×	656 1.1×	592 1.1×	484 0.9×	5	3.2k
Thomas Kulbe Germany	8	1.5k 0.7×	869 1.0×	700 1.2×	534 1.0×	502 1.0×	10	2.6k
E. Parlanti France	19	1.7k 0.8×	1.0k 1.1×	660 1.1×	695 1.2×	426 0.8×	41	3.4k
Kenna D. Butler United States	22	1.8k 0.8×	929 1.0×	786 1.3×	381 0.7×	911 1.7×	31	3.0k
J.-M. Froidefond France	11	1.3k 0.6×	756 0.8×	395 0.7×	443 0.8×	309 0.6×	19	2.1k
David C. Podgorski United States	39	1.6k 0.8×	1.2k 1.3×	825 1.4×	282 0.5×	854 1.6×	81	3.8k
Weidong Guo China	26	1.4k 0.7×	772 0.9×	398 0.7×	331 0.6×	294 0.6×	76	2.2k
Bryan D. Downing United States	21	1.2k 0.6×	558 0.6×	722 1.2×	473 0.8×	184 0.3×	38	2.3k
Piotr Kowalczuk Poland	21	1.7k 0.8×	496 0.5×	237 0.4×	531 0.9×	346 0.7×	51	2.0k
Chin‐Chang Hung Taiwan	38	2.1k 1.0×	776 0.9×	444 0.7×	177 0.3×	692 1.3×	100	3.7k

Countries citing papers authored by John R. Helms

Since Specialization

Citations

This map shows the geographic impact of John R. Helms's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John R. Helms with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John R. Helms more than expected).

Fields of papers citing papers by John R. Helms

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John R. Helms. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John R. Helms. The network helps show where John R. Helms may publish in the future.

Co-authorship network of co-authors of John R. Helms

This figure shows the co-authorship network connecting the top 25 collaborators of John R. Helms. A scholar is included among the top collaborators of John R. Helms based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John R. Helms. John R. Helms is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Helms, John R., et al.. (2025). Modulation of heme peroxo nucleophilicities with axial ligands reveal key insights into the mechanistic landscape of nitric oxide synthase. Chemical Science. 16(22). 9648–9661. 1 indexed citations

Avery, G. Brooks, Ralph N. Mead, Stephen A. Skrabal, et al.. (2020). Composition and lability of photochemically released dissolved organic matter from resuspended estuarine sediments. Organic Geochemistry. 151. 104164–104164. 17 indexed citations

Felix, J. David, Joan D. Willey, Katherine M. Mullaugh, et al.. (2017). Removal of atmospheric ethanol by wet deposition. Global Biogeochemical Cycles. 31(2). 348–356. 14 indexed citations

Cao, Xiaoyan, Margaret R. Mulholland, John R. Helms, 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. 89(22). 11990–11998. 14 indexed citations

Avery, G. Brooks, Alan Roebuck, Ralph N. Mead, et al.. (2015). Surface waters as a sink and source of atmospheric gas phase ethanol. Chemosphere. 144. 360–365. 14 indexed citations

Helms, John R., Jingdong Mao, Hongmei Chen, et al.. (2015). Spectroscopic characterization of oceanic dissolved organic matter isolated by reverse osmosis coupled with electrodialysis. Marine Chemistry. 177. 278–287. 20 indexed citations

Chen, Hongmei, Aron Stubbins, E. Michael Perdue, 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. 58 indexed citations

Helms, John R., Jingdong Mao, Aron Stubbins, et al.. (2014). Loss of optical and molecular indicators of terrigenous dissolved organic matter during long-term photobleaching. Aquatic Sciences. 76(3). 353–373. 108 indexed citations

Helms, John R., Donna A. Glinski, Ralph N. Mead, et al.. (2014). Photochemical dissolution of organic matter from resuspended sediments: Impact of source and diagenetic state on photorelease. Organic Geochemistry. 73. 83–89. 28 indexed citations

10.

Mead, Ralph N., et al.. (2014). Enhanced detection of the algal toxin PbTx‐2 in marine waters by atmospheric pressure chemical ionization mass spectrometry. Rapid Communications in Mass Spectrometry. 28(22). 2455–2460. 3 indexed citations

11.

Mead, Ralph N., et al.. (2014). Photodegradation of the antihistamine cetirizine in natural waters. Environmental Toxicology and Chemistry. 33(10). 2240–2245. 10 indexed citations

12.

Helms, John R., 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. 7 indexed citations

13.

Helms, John R., Aron Stubbins, E. Michael Perdue, et al.. (2013). Photochemical bleaching of oceanic dissolved organic matter and its effect on absorption spectral slope and fluorescence. Marine Chemistry. 155. 81–91. 242 indexed citations

14.

Helms, John R., Jingdong Mao, Klaus Schmidt‐Rohr, Hussain Abdulla, & Kenneth Mopper. (2013). Photochemical flocculation of terrestrial dissolved organic matter and iron. Geochimica et Cosmochimica Acta. 121. 398–413. 73 indexed citations

15.

Helms, John R.. (2012). Spectroscopic Characterization of Dissolved Organic Matter: Insights into Composition, Photochemical Transformation and Carbon Cycling. ODU Digital Commons (Old Dominion University). 10 indexed citations

16.

Helms, John R., Xueqian Kong, Élodie Salmon, et al.. (2011). Structural characterization of gilsonite bitumen by advanced nuclear magnetic resonance spectroscopy and ultrahigh resolution mass spectrometry revealing pyrrolic and aromatic rings substituted with aliphatic chains. Organic Geochemistry. 44. 21–36. 36 indexed citations

17.

Helms, John R., Aron Stubbins, Jason D. Ritchie, et al.. (2008). Absorption spectral slopes and slope ratios as indicators of molecular weight, source, and photobleaching of chromophoric dissolved organic matter. Limnology and Oceanography. 53(3). 955–969. 2283 indexed citations breakdown →

18.

Helms, John R.. (2006). Spectral Shape as an Indicator of Molecular Weight in Chromophoric Dissolved Organic Matter. ODU Digital Commons (Old Dominion University). 6 indexed citations

19.

Helms, John R.. (1982). Use of Remote Sensing for Mapping and Inventory of Lower Coastal Plain Forest Resources in South Carolina. TigerPrints (Clemson University).

20.

Helms, John R.. (1981). Threat perceptions in acute chemical disasters. Journal of Hazardous Materials. 4(4). 321–329. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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