Nikolla Qafoku

5.9k total citations · 1 hit paper
113 papers, 3.9k citations indexed

About

Nikolla Qafoku is a scholar working on Inorganic Chemistry, Environmental Engineering and Materials Chemistry. According to data from OpenAlex, Nikolla Qafoku has authored 113 papers receiving a total of 3.9k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Inorganic Chemistry, 31 papers in Environmental Engineering and 23 papers in Materials Chemistry. Recurrent topics in Nikolla Qafoku's work include Radioactive element chemistry and processing (53 papers), Groundwater flow and contamination studies (25 papers) and CO2 Sequestration and Geologic Interactions (18 papers). Nikolla Qafoku is often cited by papers focused on Radioactive element chemistry and processing (53 papers), Groundwater flow and contamination studies (25 papers) and CO2 Sequestration and Geologic Interactions (18 papers). Nikolla Qafoku collaborates with scholars based in United States, South Korea and Indonesia. Nikolla Qafoku's co-authors include John M. Zachara, Christopher F. Brown, Jonathan P. Icenhower, Malcolm E. Sumner, Amanda R. Lawter, R. Matthew Asmussen, Odeta Qafoku, Michael F. Hochella, Chongxuan Liu and James E. Szecsody and has published in prestigious journals such as Science, Nature Communications and SHILAP Revista de lepidopterología.

In The Last Decade

Nikolla Qafoku

109 papers receiving 3.8k citations

Hit Papers

align trajectories sort by overperformance

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.

Natural, incidental, and engineered nanomaterials and their impacts on the Earth system

2019 568 citations Michael F. Hochella, David W. Mogk et al. Science profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Nikolla Qafoku United States	33	1.4k	948	835	566	488	113	3.9k
Michaël Descostes France	33	1.6k 1.1×	776 0.8×	492 0.6×	676 1.2×	548 1.1×	115	3.7k
Samuel Shaw United Kingdom	41	1.5k 1.1×	1.2k 1.3×	606 0.7×	882 1.6×	894 1.8×	117	5.7k
John J. Lenhart United States	25	737 0.5×	1.0k 1.1×	453 0.5×	584 1.0×	341 0.7×	45	3.2k
Tiziana Missana Spain	30	1.5k 1.0×	667 0.7×	973 1.2×	254 0.4×	404 0.8×	116	3.2k
Paul L. Gassman United States	30	967 0.7×	685 0.7×	539 0.6×	569 1.0×	437 0.9×	49	3.6k
Odeta Qafoku United States	34	1.0k 0.7×	561 0.6×	1.3k 1.5×	584 1.0×	289 0.6×	121	3.3k
Tsutomu Satō Japan	38	692 0.5×	1.1k 1.2×	370 0.4×	674 1.2×	460 0.9×	212	4.8k
Daniel I. Kaplan United States	44	2.7k 1.9×	1.1k 1.1×	893 1.1×	602 1.1×	937 1.9×	203	5.5k
Michel L. Schlegel France	31	989 0.7×	1.0k 1.1×	317 0.4×	462 0.8×	510 1.0×	88	3.5k
Francis R. Livens United Kingdom	35	2.4k 1.7×	1.1k 1.1×	355 0.4×	428 0.8×	703 1.4×	139	4.1k

Countries citing papers authored by Nikolla Qafoku

Since Specialization

Citations

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

Fields of papers citing papers by Nikolla Qafoku

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Nikolla Qafoku. 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 Nikolla Qafoku. The network helps show where Nikolla Qafoku may publish in the future.

Co-authorship network of co-authors of Nikolla Qafoku

This figure shows the co-authorship network connecting the top 25 collaborators of Nikolla Qafoku. A scholar is included among the top collaborators of Nikolla Qafoku 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 Nikolla Qafoku. Nikolla Qafoku is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Emerson, Hilary P., Nikolla Qafoku, Christian D. Johnson, et al.. (2025). A paradigm shift for evaluating natural attenuation of radioactive iodine in soils and sediments: Species-specific mechanisms and pathways. Journal of Environmental Management. 374. 124101–124101. 1 indexed citations

Lawter, Amanda R., Nikolla Qafoku, Mark Bowden, et al.. (2025). Part II: Sediment Interactions with Layered Bismuth Materials and Implications for Subsurface Contaminant Remediation. ACS Earth and Space Chemistry. 9(11). 2509–2523. 1 indexed citations

Varga, Tamás, Thomas Wietsma, Nicole DiDonato, et al.. (2025). Soil porous microstructure control over soil organic matter mobility: A multimethod workflow for understanding chemistry-dependent organic matter binding in soil. Environmental Technology & Innovation. 40. 104609–104609.

Robinson, J., et al.. (2025). Investigating Soil Organic Matter Complexation in Natural Analog Systems Using Geoelectrical Methods. Environmental Science & Technology. 59(34). 18203–18212. 1 indexed citations

Ο'Shea, Kevin Ε., Nikolla Qafoku, Hilary P. Emerson, et al.. (2023). Impact of chromium (VI) as a co-contaminant on the sorption and co-precipitation of uranium (VI) in sediments under mildly alkaline oxic conditions. Journal of Environmental Management. 349. 119463–119463. 3 indexed citations

Kukkadapu, Ravi, Qian Zhao, & Nikolla Qafoku. (2022). Stability of mineral‐organic matter associations under varying biogeochemical conditions. Soil Science Society of America Journal. 86(2). 159–161. 1 indexed citations

Bagwell, Christopher E., et al.. (2020). Evaluation of gaseous substrates for microbial immobilization of contaminant mixtures in unsaturated subsurface sediments. Journal of Environmental Radioactivity. 214-215. 106183–106183. 1 indexed citations

Hochella, Michael F., David W. Mogk, James F. Ranville, et al.. (2019). Natural, incidental, and engineered nanomaterials and their impacts on the Earth system. Science. 363(6434). 568 indexed citations breakdown →

Saslow, Sarah A., et al.. (2019). Chromate Effect on Iodate Incorporation into Calcite. ACS Earth and Space Chemistry. 3(8). 1624–1630. 16 indexed citations

10.

Bagwell, Christopher E., et al.. (2019). Microbial Methylation of Iodide in Unconfined Aquifer Sediments at the Hanford Site, USA. Frontiers in Microbiology. 10. 2460–2460. 7 indexed citations

11.

Szecsody, Jim E., et al.. (2019). Persistence of chromate in vadose zone and aquifer sediments in Hanford, Washington. The Science of The Total Environment. 676. 482–492. 6 indexed citations

12.

Lawter, Amanda R., Ravi Kukkadapu, Odeta Qafoku, et al.. (2018). Technetium and iodine aqueous species immobilization and transformations in the presence of strong reductants and calcite-forming solutions: Remedial action implications. The Science of The Total Environment. 636. 588–595. 19 indexed citations

13.

Newcomb, Christina J., Nikolla Qafoku, Jay W. Grate, Vanessa Bailey, & James J. De Yoreo. (2017). Developing a molecular picture of soil organic matter–mineral interactions by quantifying organo–mineral binding. Nature Communications. 8(1). 396–396. 215 indexed citations

14.

Asmussen, R. Matthew, Carolyn I. Pearce, Brian W. Miller, et al.. (2017). Getters for improved technetium containment in cementitious waste forms. Journal of Hazardous Materials. 341. 238–247. 27 indexed citations

15.

Veeramani, Harish, Nikolla Qafoku, Gargi Singh, et al.. (2016). Efficacy of acetate-amended biostimulation for uranium sequestration: Combined analysis of sediment/groundwater geochemistry and bacterial community structure. Applied Geochemistry. 78. 172–185. 14 indexed citations

16.

Qafoku, Nikolla, P. Evan Dresel, Eugene S. Ilton, James P. McKinley, & Charles T. Resch. (2010). Chromium transport in an acidic waste contaminated subsurface medium: The role of reduction. Chemosphere. 81(11). 1492–1500. 23 indexed citations

17.

Ilton, Eugene S., Nikolla Qafoku, Chongxuan Liu, Dean A. Moore, & John M. Zachara. (2008). Advective Removal of Intraparticle\nUranium from Contaminated Vadose\nZone Sediments, Hanford, U.S.. Insecta mundi. 24 indexed citations

18.

Campbell, Kate M., Nikolla Qafoku, Ravi Kukkadapu, et al.. (2008). Characterizing the extent and role of natural subsurface bioreduction in a uranium-contaminated aquifer. GeCAS. 72(12). 10 indexed citations

19.

Ranst, Éric Van, Sri Utami, Ann Verdoodt, & Nikolla Qafoku. (2008). Mineralogy of a perudic Andosol in central Java, Indonesia. Geoderma. 144(1-2). 379–386. 20 indexed citations

20.

Saigusa, Masahiko, et al.. (2005). Effects of Gypsum on Amelioration of Subsoil Acidity of Andisols. 2. 69–71. 2 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.

Explore authors with similar magnitude of impact