| Copper and zinc contents of Nigerian foods and estimates of the adult dietary intakes PC Onianwa, AO Adeyemo, OE Idowu, EE Ogabiela Food chemistry 72 (1), 89-95, 2001 | 312 | 2001 |
| Trace heavy metals composition of some Nigerian beverages and food drinks PC Onianwa, IG Adetola, CMA Iwegbue, MF Ojo, OO Tella Food chemistry 66 (3), 275-279, 1999 | 294 | 1999 |
| Monitoring atmospheric metal pollution: a review of the use of mosses as indicators PC Onianwa Environmental Monitoring and Assessment 71, 13-50, 2001 | 261 | 2001 |
| Cadmium and nickel composition of Nigerian foods PC Onianwa, JA Lawal, AA Ogunkeye, BM Orejimi Journal of Food Composition and Analysis 13 (6), 961-969, 2000 | 153 | 2000 |
| Heavy metal contamination of soil, and bioaccumulation in Guinea grass (Panicum maximum) around Ikeja Industrial Estate, Lagos, Nigeria S Fakayode, P Onianwa Environmental geology 43, 145-150, 2002 | 127 | 2002 |
| Roadside topsoil concentrations of lead and other heavy metals in Ibadan, Nigeria PC Onianwa Soil and Sediment contamination 10 (6), 577-591, 2001 | 113 | 2001 |
| Lead contamination of topsoil and vegetation in the vicinity of a battery factory in Nigeria PC Onianwa, SO Fakayode Environmental Geochemistry and Health 22, 211-218, 2000 | 102 | 2000 |
| Bioaccumulation of heavy metals in soil and selected food crops cultivated in Kogi State, north central Nigeria JE Emurotu, PC Onianwa Environmental systems research 6, 1-9, 2017 | 101 | 2017 |
| Heavy metals contamination of topsoil in the vicinities of auto-repair workshops, gas stations and motor-parks in a Nigerian city PC Onianwa, OM Jaiyeola, RN Egekenze Toxicological & Environmental Chemistry 84 (1-4), 33-39, 2003 | 67 | 2003 |
| Trace metal levels in some Nigerian mosses used as indicators of atmospheric pollution PC Onianwa, A Egunyomi Environmental Pollution Series B, Chemical and Physical 5 (1), 71-81, 1983 | 48 | 1983 |
| Heavy-metal content of roadside gutter sediments in Ibadan, Nigeria PC Onianwa, JO Adoghe Environment international 23 (6), 873-877, 1997 | 44 | 1997 |
| Impact of brewery effluent on water quality of the Olosun river in Ibadan, Nigeria AR Ipeaiyeda, PC Onianwa Chemistry and Ecology 25 (3), 189-204, 2009 | 38 | 2009 |
| Petroleum hydrocarbon pollution of urban topsoil in Ibadan City, Nigeria PC Onianwa Environment International 21 (3), 341-343, 1995 | 38 | 1995 |
| Accumulation patterns of heavy metals in forest mosses from the south-west region of Nigeria PC Onianwa, SO Ajayi, O Osibanjo, A Egunyomi Environmental Pollution Series B, Chemical and Physical 11 (1), 67-78, 1986 | 34 | 1986 |
| Heavy metal contents of epiphytic acrocarpous mosses within inhabited sites in Southwest Nigeria PC Onianwa, SO Ajayi Environment International 13 (2), 191-196, 1987 | 30 | 1987 |
| Lead contamination of soil in the vicinity of a military shooting range in Ibadan, Nigeria EU Etim, PC Onianwa Toxicological & Environmental Chemistry 94 (5), 895-905, 2012 | 29 | 2012 |
| Occurrence of BTEX from petroleum hydrocarbons in surface water, sediment, and biota from Ubeji Creek of Delta State, Nigeria GI Asejeje, AR Ipeaiyeda, PC Onianwa Environmental Science and Pollution Research 28, 15361-15379, 2021 | 27 | 2021 |
| Assessment of Trace Metals Concentration in Tree Barks as Indicator of Atmospheric Pollution within Ibadan City, South‐West, Nigeria IP Ejidike, PC Onianwa Journal of Analytical Methods in Chemistry 2015 (1), 243601, 2015 | 27 | 2015 |
| Pollution effect of food and beverages effluents on the Alaro River in Ibadan City, Nigeria AR Ipeaiyeda, PC Onianwa Bulletin of the Chemical Society of Ethiopia 25 (3), 2011 | 27 | 2011 |
| Proximate and elemental composition and their estimated daily intake in infant formulae from developed and developing countries: A comparative analysis BI Olu-Owolabi, SO Fakayode, KO Adebowale, PC Onianwa JOURNAL OF FOOD AGRICULTURE AND ENVIRONMENT 5 (2), 40, 2007 | 27 | 2007 |
