Citation Rankings
Highly Cited Researchers

Exponent Inc Highly Cited Researchers CitationNatural Sciences / Chemical Sciences Rankings 2025

Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation IndexUniversities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025

* Total Citation Counts Rankings
Ranking Based On Selection :1
United States
Paul D Boehm
Environmental chemistry
natural resource damage assessment
environmental forensics
ecological risk
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,616
1,079
0.142
* Total Citation Counts Rankings
Ranking Based On Selection :2
United States
William G Hardin
Reliability Engineering
Failure Analysis
Strategic Problem Solving
Catalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,284
2,255
0.687
* Total Citation Counts Rankings
Ranking Based On Selection :3
United States
Josue F Martinez Hardigree
Human Factors
Surfaces & Interfaces
Optoelectronics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,080
712
0.659
* Total Citation Counts Rankings
Ranking Based On Selection :4
United States
Brian D Drollette
Environmental Forensics
Environmental Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
797
497
0.624
* Total Citation Counts Rankings
Rankings
130,166
United States
50,205
1
Ranking Based On Selection: 1
Paul D Boehm
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,616
1,079
0.142
Environmental chemistry
natural resource damage assessment
environmental forensics
ecological risk
* Total Citation Counts Rankings
Rankings
291,883
United States
99,038
12
Ranking Based On Selection: 2
William G Hardin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,284
2,255
0.687
Reliability Engineering
Failure Analysis
Strategic Problem Solving
Catalysis
* Total Citation Counts Rankings
Rankings
638,663
United States
192,329
38
Ranking Based On Selection: 3
Josue F Martinez Hardigree
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,080
712
0.659
Human Factors
Surfaces & Interfaces
Optoelectronics
* Total Citation Counts Rankings
Rankings
747,528
United States
218,883
52
Ranking Based On Selection: 4
Brian D Drollette
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
797
497
0.624
Environmental Forensics
Environmental Chemistry