André J. Simpson

15.6k citations

284 papers · 10.8k indexed · h-index 55

Impact in

Soil Science top 0.2%
- Soil Carbon and Nitrogen Dynamics
Environmental Chemistry top 0.2%
- Soil and Water Nutrient Dynamics

Papers in ⓘ

Molecular Biology 96
- Metabolomics and Mass Spectrometry Studies 86
Nuclear and High Energy Physics 83
- NMR spectroscopy and applications 83

Co-authors: Myrna J. Simpson (143 shared papers)Brian P. Kelleher (22 shared papers)Ronald Soong (99 shared papers)Xiaojuan Feng (5 shared papers)Buuan Lam (9 shared papers)Patrick G. Hatcher (8 shared papers)William L. Kingery (16 shared papers)Sarah Anne Brown (4 shared papers)
Journals: Environmental Science & Technology (30 papers)Analytical Chemistry (19 papers)Magnetic Resonance in Chemistry (18 papers)Environmental Toxicology and Chemistry (12 papers)Environmental Chemistry (12 papers)
Partner nations: Canada United States Germany

In The Last Decade

André J. Simpson

277 papers receiving 10.6k citations

Peers

Replace Myrna J. Simpson with:

Myrna J. Simpson Canada

Jingdong Mao United States

Heike Knicker Germany

Alessandro Piccolo Italy

Caroline M. Preston Canada

Patrick G. Hatcher United States

Norbert Hertkorn Germany

Quan Shi China

H.‐R. Schulten Germany

M. Schnitzer Canada

André J. Simpson relative to Myrna J. Simpson Canada Myrna J. Simpson's profile →

Citations per field

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Countries citing papers authored by André J. Simpson

Since Specialization

Citations

This map shows the geographic impact of André J. Simpson'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 André J. Simpson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites André J. Simpson more than expected).

Fields of papers citing papers by André J. Simpson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by André J. Simpson. 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 André J. Simpson. The network helps show where André J. Simpson may publish in the future.

Co-authors

The 25 scholars most cited alongside André J. Simpson, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with André J. Simpson Line = papers co-authored together André J. Simpson links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 284 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Microbially Derived Inputs to Soil Organic Matter: Are Current Estimates Too Low? Environmental Science & Technology ·André J. Simpson, Myrna J. Simpson, Emma Smith, Brian P. Kelleher	2007	426
2	Chemical and mineralogical controls on humic acid sorption to clay mineral surfaces Organic Geochemistry ·Xiaojuan Feng, André J. Simpson, Myrna J. Simpson	2005	297
3	Humic Substances in Soils: Are They Really Chemically Distinct? Environmental Science & Technology ·Brian P. Kelleher, André J. Simpson	2006	284
4	NMR spectroscopy in environmental research: From molecular interactions to global processes Progress in Nuclear Magnetic Resonance Spectroscopy ·André J. Simpson, David J. McNally, Myrna J. Simpson	2010	231
5	Increased cuticular carbon sequestration and lignin oxidation in response to soil warming Nature Geoscience ·Xiaojuan Feng, André J. Simpson, Kevin P. Wilson, D. Dudley Williams, Myrna J. Simpson	2008	230
6	Major Structural Components in Freshwater Dissolved Organic Matter Environmental Science & Technology ·Buuan Lam, Andrew J. Baer, Mehran Alaee, Brent Lefebvre, Arvin Moser, Antony Williams, André J. Simpson	2007	222
7	Molecular structures and associations of humic substances in the terrestrial environment Die Naturwissenschaften ·André J. Simpson, William L. Kingery, M.H.B. Hayes, Manfred Spraul, Eberhard Humpfer, Péter Dvortsák, Rainer Kerssebaum, Markus Godejohann, Martin R. Hofmann	2002	206
8	Shifts in microbial community and water-extractable organic matter composition with biochar amendment in a temperate forest soil Soil Biology and Biochemistry ·Perry J. Mitchell, André J. Simpson, Ronald Soong, Myrna J. Simpson	2014	204
9	Physical, chemical, and biochemical mechanisms of soil organic matter stabilization under conservation tillage systems: A central role for microbes and microbial by-products in C sequestration Soil Biology and Biochemistry ·César Plaza, Denis Courtier‐Murias, José M. Fernández, Alfredo Polo, André J. Simpson	2012	199
10	Purge NMR: Effective and easy solvent suppression Journal of Magnetic Resonance ·André J. Simpson, Sarah Anne Brown	2005	164
11	Cross-Coupling of Sulfonamide Antimicrobial Agents with Model Humic Constituents Environmental Science & Technology ·Heidi M. Bialk, André J. Simpson, Joel A. Pedersen	2005	161
12	Determining the molecular weight, aggregation, structures and interactions of natural organic matter using diffusion ordered spectroscopy Magnetic Resonance in Chemistry ·André J. Simpson	2002	158
13	Unraveling the Structural Components of Soil Humin by Use of Solution-State Nuclear Magnetic Resonance Spectroscopy Environmental Science & Technology ·André J. Simpson, Guixue Song, Emma Smith, Buuan Lam, E. H. Novotny, M.H.B. Hayes	2006	148
14	High resolution electrospray ionization mass spectrometry and 2D solution NMR for the analysis of DOM extracted by C18 solid phase disk Organic Geochemistry ·Sung‐Hwan Kim, André J. Simpson, Elizabeth B. Kujawinski, Michael A. Freitas, Patrick G. Hatcher	2003	121
15	The Chemical Ecology of Soil Organic Matter Molecular Constituents Journal of Chemical Ecology ·Myrna J. Simpson, André J. Simpson	2012	114
16	Altered microbial community structure and organic matter composition under elevated CO₂and N fertilization in the duke forest Global Change Biology ·Xiaojuan Feng, André J. Simpson, William H. Schlesinger, Myrna J. Simpson	2009	108
17	Direct 1H NMR spectroscopy of dissolved organic matter in natural waters The Analyst ·Buuan Lam, André J. Simpson	2007	108
18	HILIC-NMR: Toward the Identification of Individual Molecular Components in Dissolved Organic Matter Environmental Science & Technology ·Gwen C. Woods, Myrna J. Simpson, Philip J. Koerner, Antonia Napoli, André J. Simpson	2011	102
19	Insights into the structure of cutin and cutan from Agave americana leaf cuticle using HRMAS NMR spectroscopy Organic Geochemistry ·Ashish P. Deshmukh, André J. Simpson, Christopher M. Hadad, Patrick G. Hatcher	2005	98
20	The Application of ¹H HR-MAS NMR Spectroscopy for the Study of Structures and Associations of Organic Components at the Solid−Aqueous Interface of a Whole Soil Environmental Science & Technology ·André J. Simpson, William L. Kingery, David R. Shaw, Manfred Spraul, Eberhard Humpfer, Péter Dvortsák	2001	92

About André J. Simpson

André J. Simpson is a scholar working on Molecular Biology, Nuclear and High Energy Physics, Spectroscopy, Ecology and Health, Toxicology and Mutagenesis, having authored 284 papers that have together received 10.8k indexed citations. Recurring topics across this work include Metabolomics and Mass Spectrometry Studies (86 papers), NMR spectroscopy and applications (83 papers), Advanced NMR Techniques and Applications (49 papers), Advanced MRI Techniques and Applications (41 papers), Soil Carbon and Nitrogen Dynamics (37 papers), Isotope Analysis in Ecology (31 papers), Environmental Toxicology and Ecotoxicology (26 papers) and Marine and coastal ecosystems (24 papers). The work is most often cited by research in Soil Science (2.5k citations), Environmental Chemistry (1.6k citations), Pollution (1.6k citations), Health, Toxicology and Mutagenesis (1.7k citations) and Nuclear and High Energy Physics (1.4k citations). André J. Simpson has collaborated with scholars based in Canada, United States and Germany. Frequent co-authors include Myrna J. Simpson, Brian P. Kelleher, Ronald Soong, Xiaojuan Feng, Buuan Lam, Patrick G. Hatcher, William L. Kingery, Sarah Anne Brown, Emma Smith and Denis Courtier‐Murias. Their work appears in journals such as Environmental Science & Technology, Analytical Chemistry, Magnetic Resonance in Chemistry, Environmental Toxicology and Chemistry and Environmental Chemistry.

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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