Citation Rankings
Highly Cited Researchers

Natural Sciences / Chemical Sciences Highly Cited Researchers 31 Scientists Citation Rankings - 2025

The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Total Citation Counts Rankings
Ranking Based On Selection: 1
Finland
Markku Leskela
Atomic Layer Deposition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,846
17,255
0.293
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Finland
Pekka Pyykko
Quantum chemistry. Heavy element chemistry. Relativistic effects.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,766
7,343
0.189
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Finland
Dage Sundholm
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,428
4,474
0.333
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Finland
David P Fewer
Microbial diversity
toxic cyanobacteria
water quality
toxins and natural products
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,497
4,609
0.485
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Finland
Nina Sarnela
mass spectrometry
gas phase oxidation
atmospheric nucleation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,388
4,172
0.653
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Finland
Alistair King
Cellulose chemistry and technology
NMR
surface chemistry
ionic liquids
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,050
2,881
0.476
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Finland
Timo Hatanpää
ALD
precursor chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,834
2,849
0.589
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Finland
Jaakko Niinistö
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,610
1,536
0.333
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Finland
Haiyan Li
Atmospheric Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,638
3,331
0.916
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Finland
Yee Jun Tham
Atmospheric Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,970
2,344
0.789
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Finland
Arkke Eskola
Reaction Kinetics
Combustion Chemistry
Atmospheric Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,835
1,326
0.468
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Finland
Lei Yao
Atmospheric Chemistry
Mass Spectrometry
Aerosols
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,440
2,035
0.834
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Finland
Sakari Joenväärä
mass spectrometry
glycopeptides
systems biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,411
1,037
0.430
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Finland
Xu Cheng He|Xucheng He
marine aerosol formation
atmospheric chemistry
mass spectrometry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,281
2,196
0.963
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Finland
Jevgeni Parshintsev
Analytical Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,587
717
0.452
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Finland
Markus Metsälä
Exhaled breath analysis
trace gas detection
laser spectroscopy
chemical ionization mass spectrometry
molecular spectroscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,543
765
0.496
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Finland
Jhon Quiroz
Heterogeneous Catalysis
Materials Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,337
944
0.706
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Finland
Nanna Myllys
Quantum chemistry
Atmospheric chemistry
Aerosol physics
Spectroscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,256
985
0.784
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Finland
Christopher D Daub
Molecular Simulation
Computational Chemistry and Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,235
410
0.332
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Finland
Gordon W Driver
biomass (lignin/cellulose)
ionic liquids
proton chemistry
thermodynamics
NMR relaxation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,114
318
0.285
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Finland
Zahra Safaei|Mahsa Safaei
Chemical Engineering
Sensor Development
Environmental Analysis
Smart Circular Economy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,070
871
0.814
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Finland
Joona Mikkilä
analytical chemistry
atmospheric pressure chemical ionization
enzymatic catalysis
biomaterials
self-assembly
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
963
511
0.531
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Finland
Johannes Pernaa
chemistry education research
CER
educational cheminformatics
chemistry teacher education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
848
534
0.630
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Finland
Nicolai Bork
atmospheric chemistry
ab initio calculations
ionic chemitry
spectroscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
761
241
0.317
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Finland
Thanaporn Liangsupree
Analytical chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
553
544
0.984
* Total Citation Counts Rankings
Rankings
7,907
Finland
32
17
Ranking Based On Selection: 1
Markku Leskela
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,846
17,255
0.293
* Total Citation Counts Rankings
Rankings
15,450
Finland
66
23
Ranking Based On Selection: 2
Pekka Pyykko
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,766
7,343
0.189
Quantum chemistry. Heavy element chemistry. Relativistic effects.
* Total Citation Counts Rankings
Rankings
70,722
Finland
370
117
Ranking Based On Selection: 3
Dage Sundholm
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,428
4,474
0.333
* Total Citation Counts Rankings
Rankings
106,888
Finland
615
191
Ranking Based On Selection: 4
David P Fewer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,497
4,609
0.485
Microbial diversity
toxic cyanobacteria
water quality
toxins and natural products
* Total Citation Counts Rankings
Rankings
164,393
Finland
950
279
Ranking Based On Selection: 5
Nina Sarnela
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,388
4,172
0.653
mass spectrometry
gas phase oxidation
atmospheric nucleation
* Total Citation Counts Rankings
Rankings
173,618
Finland
1,011
294
Ranking Based On Selection: 6
Alistair King
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,050
2,881
0.476
Cellulose chemistry and technology
NMR
surface chemistry
ionic liquids
* Total Citation Counts Rankings
Rankings
216,230
Finland
1,307
371
Ranking Based On Selection: 7
Timo Hatanpää
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,834
2,849
0.589
* Total Citation Counts Rankings
Rankings
226,007
Finland
1,377
393
Ranking Based On Selection: 8
Jaakko Niinistö
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,610
1,536
0.333
* Total Citation Counts Rankings
Rankings
279,876
Finland
1,736
477
Ranking Based On Selection: 9
Haiyan Li
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,638
3,331
0.916
* Total Citation Counts Rankings
Rankings
331,902
Finland
2,093
552
Ranking Based On Selection: 10
Yee Jun Tham
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,970
2,344
0.789
* Total Citation Counts Rankings
Rankings
344,658
Finland
2,175
575
Ranking Based On Selection: 11
Arkke Eskola
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,835
1,326
0.468
Reaction Kinetics
Combustion Chemistry
Atmospheric Chemistry
* Total Citation Counts Rankings
Rankings
387,792
Finland
2,474
646
Ranking Based On Selection: 12
Lei Yao
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,440
2,035
0.834
Atmospheric Chemistry
Mass Spectrometry
Aerosols
* Total Citation Counts Rankings
Rankings
391,424
Finland
2,497
653
Ranking Based On Selection: 13
Sakari Joenväärä
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,411
1,037
0.430
mass spectrometry
glycopeptides
systems biology
* Total Citation Counts Rankings
Rankings
407,714
Finland
2,602
679
Ranking Based On Selection: 14
Xu Cheng He|Xucheng He
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,281
2,196
0.963
marine aerosol formation
atmospheric chemistry
mass spectrometry
* Total Citation Counts Rankings
Rankings
525,360
Finland
3,331
823
Ranking Based On Selection: 15
Jevgeni Parshintsev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,587
717
0.452
* Total Citation Counts Rankings
Rankings
534,924
Finland
3,385
830
Ranking Based On Selection: 16
Markus Metsälä
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,543
765
0.496
Exhaled breath analysis
trace gas detection
laser spectroscopy
chemical ionization mass spectrometry
molecular spectroscopy
* Total Citation Counts Rankings
Rankings
584,354
Finland
3,680
898
Ranking Based On Selection: 17
Jhon Quiroz
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,337
944
0.706
* Total Citation Counts Rankings
Rankings
606,263
Finland
3,817
932
Ranking Based On Selection: 18
Nanna Myllys
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,256
985
0.784
Quantum chemistry
Atmospheric chemistry
Aerosol physics
Spectroscopy
* Total Citation Counts Rankings
Rankings
612,383
Finland
3,860
944
Ranking Based On Selection: 19
Christopher D Daub
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,235
410
0.332
Molecular Simulation
Computational Chemistry and Physics
* Total Citation Counts Rankings
Rankings
649,478
Finland
4,072
999
Ranking Based On Selection: 20
Gordon W Driver
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,114
318
0.285
biomass (lignin/cellulose)
ionic liquids
proton chemistry
thermodynamics
NMR relaxation
* Total Citation Counts Rankings
Rankings
663,669
Finland
4,165
1,012
Ranking Based On Selection: 21
Zahra Safaei|Mahsa Safaei
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,070
871
0.814
Chemical Engineering
Sensor Development
Environmental Analysis
Smart Circular Economy
* Total Citation Counts Rankings
Rankings
701,724
Finland
4,394
1,066
Ranking Based On Selection: 22
Joona Mikkilä
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
963
511
0.531
analytical chemistry
atmospheric pressure chemical ionization
enzymatic catalysis
biomaterials
self-assembly
* Total Citation Counts Rankings
Rankings
747,264
Finland
4,670
1,123
Ranking Based On Selection: 23
Johannes Pernaa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
848
534
0.630
chemistry education research
CER
educational cheminformatics
chemistry teacher education
* Total Citation Counts Rankings
Rankings
785,443
Finland
4,891
1,162
Ranking Based On Selection: 24
Nicolai Bork
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
761
241
0.317
atmospheric chemistry
ab initio calculations
ionic chemitry
spectroscopy
* Total Citation Counts Rankings
Rankings
892,340
Finland
5,438
1,262
Ranking Based On Selection: 25
Thanaporn Liangsupree
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
553
544
0.984