Total 2,424,675 scientists, country 221, and institutions 24,468 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Anduang O Odiongenyi](https://cdn.adscientificindex.com/pictures/00/4534005.jpg)
ENVIRONMENTAL CHEMISTRY
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
18
0.720
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Emmanuel Ukpong](/user/assets/images/profile/no-profile-photo.png)
Analytical Chemistry
Complexes
Electrochemistry
Electroanalytical chemistry.
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
8
0.381
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Aniefiok E. Ite|Aniefiok E. Ite, Ite, Aniefiok E., AE Ite](https://cdn.adscientificindex.com/pictures/0b/104031.jpg)
Environmental Chemistry
Environmental Science & Technology
International Environmental Law
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
9
0.643
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Ibanga Isaac](https://cdn.adscientificindex.com/pictures/3a/5112096.jpg)
Synthesis of Polymer/Heterocyclic Compounds
and Natural Products Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
8
0.800
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Mayen Ibeh](https://cdn.adscientificindex.com/pictures/f2/5798979.jpg)
Oil and Gas
Economics
Green Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Edidiong E. Ikpe](https://cdn.adscientificindex.com/pictures/52/4631878.jpg)
chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Usoro M. Etesin](https://cdn.adscientificindex.com/pictures/03/4535889.jpg)
Inorganic/ Organic Geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
6
0.667
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Edet W Nsi](/user/assets/images/profile/no-profile-photo.png)
Analytical and Industrial Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Akanimo N. Ekanem|Akanimo Dianabasi Akpan](https://cdn.adscientificindex.com/pictures/88/4811104.jpg)
Environmental Chemistry
Analytical Chemistry
Inorganic Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Imeh J. Okop|Nnabuk Eddy, NnanakeAbasi Offiong, Chrisna Persaud](https://cdn.adscientificindex.com/pictures/25/4683606.jpg)
Analytical Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11
![Ifiok O. Ekwere](https://cdn.adscientificindex.com/pictures/4e/4528675.jpg)
Environmental Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Uwem U. Ubong](https://cdn.adscientificindex.com/pictures/31/4528787.jpg)
Environmental Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
3
0.750
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Clement O. Obadimu](https://cdn.adscientificindex.com/pictures/18/5110298.jpg)
Analytical/Environmental Chemistry
Pollution Studies
Safety & Risk management
Behavioural Sciences
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
1
0.250
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Iniobong S. Enengedi (Inobong D. Idung)](https://cdn.adscientificindex.com/pictures/8a/4528674.jpg)
Industrial Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
1
0.250
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Umoh Fo](https://cdn.adscientificindex.com/pictures/8c/4834425.jpg)
Soil Chemistry & Mineralogy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Itohowo Akpan](https://cdn.adscientificindex.com/pictures/7f/4528788.jpg)
Organic Chemistry (Natural Product/ Pharmaceutical Chemistry)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
* Total i10 IndexRankings
Ranking Based On Selection: 17
![Itoro E Willie](https://cdn.adscientificindex.com/pictures/09/4528673.jpg)
Organic Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
Anduang O Odiongenyi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
18
0.720
Emmanuel Ukpong
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
8
0.381
Analytical Chemistry
Complexes
Electrochemistry
Electroanalytical chemistry.
Aniefiok E. Ite|Aniefiok E. Ite, Ite, Aniefiok E., AE Ite
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
9
0.643
Environmental Chemistry
Environmental Science & Technology
International Environmental Law
Ibanga Isaac
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
8
0.800
Synthesis of Polymer/Heterocyclic Compounds
and Natural Products Chemistry
Mayen Ibeh
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
Oil and Gas
Economics
Green Chemistry
Edidiong E. Ikpe
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
Usoro M. Etesin
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
6
0.667
Edet W Nsi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
Analytical and Industrial Chemistry
Akanimo N. Ekanem|Akanimo Dianabasi Akpan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Environmental Chemistry
Analytical Chemistry
Inorganic Chemistry
Imeh J. Okop|Nnabuk Eddy, NnanakeAbasi Offiong, Chrisna Persaud
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Ifiok O. Ekwere
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Uwem U. Ubong
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
3
0.750
Clement O. Obadimu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
1
0.250
Analytical/Environmental Chemistry
Pollution Studies
Safety & Risk management
Behavioural Sciences
Iniobong S. Enengedi (Inobong D. Idung)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
1
0.250
Umoh Fo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
Itohowo Akpan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000
Organic Chemistry (Natural Product/ Pharmaceutical Chemistry)
Itoro E Willie
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1
0
0.000