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 Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
Organic chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
148
132
0.892
* Total Citation Counts Rankings
Ranking Based On Selection :2
environmental toxicology
food chemistry
human nutrition
water treatment
biochar production
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
130
115
0.885
* Total Citation Counts Rankings
Ranking Based On Selection :3
Environmental chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80
72
0.900
* Total Citation Counts Rankings
Ranking Based On Selection :4
inorganic chemistry
organic synthesis and metal based drugs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41
39
0.951
Chintua Igara
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
148
132
0.892
Lawrence Olusegun Ajala
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
130
115
0.885
environmental toxicology
food chemistry
human nutrition
water treatment
biochar production
Ndukwe MK
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80
72
0.900
Ugochukwu B Amadi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41
39
0.951
inorganic chemistry
organic synthesis and metal based drugs