Environmental impact of heavy metals distribution in water and sediments of Ogunpa River, Ibadan area, southwestern Nigeria

Moshood N. Tijani, Kennji Jinno, Yoshinari Hiroshiro

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Geochemical evaluation of distribution of heavy metals in water and sediments of Ogunpa River within Ibadan metropolis in Southwestern Nigeria is presented in respect of anthropogenic contamination from the surrounding urbanized catchment area. The results revealed low contamination or enrichment of the heavy metals (Pb, Zn, Cu, Cd, and As) in the water phase. Also, the sediment phase (<63μm) of the drainage system is anthropogenically enriched in Ph, Zn, Cu, Cd, As and t-Hg with all recording an estimated anthropogenic factor (AF) value above 1. The estimated index of geoaccumulation (Igco) with a value of approximately 2 for Pb, Zn and t-Hg indicates moderate or middle level contamination in the sediments while Igco of <1 recorded for Cu, Cd, and As indicate very low or no contamination. This trend is however, reversed in the water column with Cu and Cd having Igco value of 1.2 and 3.2 respectively, pointing to relative partitioning of the metals between the two media. Quantification of degree of pollution revealed high anthropogenic contribution for Pb (75%), Zn (75%) and t-Hg (60%), indicating enrichment by a factor of at least 5 in the sediment phase, while anthropogenic in-put also accounts for 70% (Cu) and 90% (Cd) in the water column. Furthermore, correlation of electrical conductivity (EC) peaks with the high values of Pb, Zn and t-Hg indicated that the inputs are related to anthropogenic sources along the stretches of the Ogunpa channel. The sources of contamination are attributed to urbanised anthropogenic sources, mostly vehicular emissions and related repair products, domestic sewage and effluents, varied household garbages and refuse dumps including incineration bye-products. Based on the overall evaluation, recommendations in respect of sanitization and contamination control/monitoring strategies in the study area are also presented.

Original languageEnglish
Pages (from-to)73-83
Number of pages11
JournalJournal of Mining and Geology
Volume40
Issue number1
DOIs
Publication statusPublished - Jan 1 2004

Fingerprint

Nigeria
heavy metals
rivers
sediments
contamination
environmental impact
heavy metal
geoaccumulation index
river
sediment
water
anthropogenic source
garbage
water column
incinerators
sewage
evaluation
effluents
refuse
products

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Geophysics
  • Geology
  • Economic Geology

Cite this

Environmental impact of heavy metals distribution in water and sediments of Ogunpa River, Ibadan area, southwestern Nigeria. / Tijani, Moshood N.; Jinno, Kennji; Hiroshiro, Yoshinari.

In: Journal of Mining and Geology, Vol. 40, No. 1, 01.01.2004, p. 73-83.

Research output: Contribution to journalArticle

@article{0bca883dd1c4424d8aa093e7bc5fde26,
title = "Environmental impact of heavy metals distribution in water and sediments of Ogunpa River, Ibadan area, southwestern Nigeria",
abstract = "Geochemical evaluation of distribution of heavy metals in water and sediments of Ogunpa River within Ibadan metropolis in Southwestern Nigeria is presented in respect of anthropogenic contamination from the surrounding urbanized catchment area. The results revealed low contamination or enrichment of the heavy metals (Pb, Zn, Cu, Cd, and As) in the water phase. Also, the sediment phase (<63μm) of the drainage system is anthropogenically enriched in Ph, Zn, Cu, Cd, As and t-Hg with all recording an estimated anthropogenic factor (AF) value above 1. The estimated index of geoaccumulation (Igco) with a value of approximately 2 for Pb, Zn and t-Hg indicates moderate or middle level contamination in the sediments while Igco of <1 recorded for Cu, Cd, and As indicate very low or no contamination. This trend is however, reversed in the water column with Cu and Cd having Igco value of 1.2 and 3.2 respectively, pointing to relative partitioning of the metals between the two media. Quantification of degree of pollution revealed high anthropogenic contribution for Pb (75{\%}), Zn (75{\%}) and t-Hg (60{\%}), indicating enrichment by a factor of at least 5 in the sediment phase, while anthropogenic in-put also accounts for 70{\%} (Cu) and 90{\%} (Cd) in the water column. Furthermore, correlation of electrical conductivity (EC) peaks with the high values of Pb, Zn and t-Hg indicated that the inputs are related to anthropogenic sources along the stretches of the Ogunpa channel. The sources of contamination are attributed to urbanised anthropogenic sources, mostly vehicular emissions and related repair products, domestic sewage and effluents, varied household garbages and refuse dumps including incineration bye-products. Based on the overall evaluation, recommendations in respect of sanitization and contamination control/monitoring strategies in the study area are also presented.",
author = "Tijani, {Moshood N.} and Kennji Jinno and Yoshinari Hiroshiro",
year = "2004",
month = "1",
day = "1",
doi = "10.4314/jmg.v40i1.18811",
language = "English",
volume = "40",
pages = "73--83",
journal = "Journal of Mining and Geology",
issn = "1116-2775",
publisher = "Nigerian Mining and Geosciences Society",
number = "1",

}

TY - JOUR

T1 - Environmental impact of heavy metals distribution in water and sediments of Ogunpa River, Ibadan area, southwestern Nigeria

AU - Tijani, Moshood N.

AU - Jinno, Kennji

AU - Hiroshiro, Yoshinari

PY - 2004/1/1

Y1 - 2004/1/1

N2 - Geochemical evaluation of distribution of heavy metals in water and sediments of Ogunpa River within Ibadan metropolis in Southwestern Nigeria is presented in respect of anthropogenic contamination from the surrounding urbanized catchment area. The results revealed low contamination or enrichment of the heavy metals (Pb, Zn, Cu, Cd, and As) in the water phase. Also, the sediment phase (<63μm) of the drainage system is anthropogenically enriched in Ph, Zn, Cu, Cd, As and t-Hg with all recording an estimated anthropogenic factor (AF) value above 1. The estimated index of geoaccumulation (Igco) with a value of approximately 2 for Pb, Zn and t-Hg indicates moderate or middle level contamination in the sediments while Igco of <1 recorded for Cu, Cd, and As indicate very low or no contamination. This trend is however, reversed in the water column with Cu and Cd having Igco value of 1.2 and 3.2 respectively, pointing to relative partitioning of the metals between the two media. Quantification of degree of pollution revealed high anthropogenic contribution for Pb (75%), Zn (75%) and t-Hg (60%), indicating enrichment by a factor of at least 5 in the sediment phase, while anthropogenic in-put also accounts for 70% (Cu) and 90% (Cd) in the water column. Furthermore, correlation of electrical conductivity (EC) peaks with the high values of Pb, Zn and t-Hg indicated that the inputs are related to anthropogenic sources along the stretches of the Ogunpa channel. The sources of contamination are attributed to urbanised anthropogenic sources, mostly vehicular emissions and related repair products, domestic sewage and effluents, varied household garbages and refuse dumps including incineration bye-products. Based on the overall evaluation, recommendations in respect of sanitization and contamination control/monitoring strategies in the study area are also presented.

AB - Geochemical evaluation of distribution of heavy metals in water and sediments of Ogunpa River within Ibadan metropolis in Southwestern Nigeria is presented in respect of anthropogenic contamination from the surrounding urbanized catchment area. The results revealed low contamination or enrichment of the heavy metals (Pb, Zn, Cu, Cd, and As) in the water phase. Also, the sediment phase (<63μm) of the drainage system is anthropogenically enriched in Ph, Zn, Cu, Cd, As and t-Hg with all recording an estimated anthropogenic factor (AF) value above 1. The estimated index of geoaccumulation (Igco) with a value of approximately 2 for Pb, Zn and t-Hg indicates moderate or middle level contamination in the sediments while Igco of <1 recorded for Cu, Cd, and As indicate very low or no contamination. This trend is however, reversed in the water column with Cu and Cd having Igco value of 1.2 and 3.2 respectively, pointing to relative partitioning of the metals between the two media. Quantification of degree of pollution revealed high anthropogenic contribution for Pb (75%), Zn (75%) and t-Hg (60%), indicating enrichment by a factor of at least 5 in the sediment phase, while anthropogenic in-put also accounts for 70% (Cu) and 90% (Cd) in the water column. Furthermore, correlation of electrical conductivity (EC) peaks with the high values of Pb, Zn and t-Hg indicated that the inputs are related to anthropogenic sources along the stretches of the Ogunpa channel. The sources of contamination are attributed to urbanised anthropogenic sources, mostly vehicular emissions and related repair products, domestic sewage and effluents, varied household garbages and refuse dumps including incineration bye-products. Based on the overall evaluation, recommendations in respect of sanitization and contamination control/monitoring strategies in the study area are also presented.

UR - http://www.scopus.com/inward/record.url?scp=3242880448&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3242880448&partnerID=8YFLogxK

U2 - 10.4314/jmg.v40i1.18811

DO - 10.4314/jmg.v40i1.18811

M3 - Article

AN - SCOPUS:3242880448

VL - 40

SP - 73

EP - 83

JO - Journal of Mining and Geology

JF - Journal of Mining and Geology

SN - 1116-2775

IS - 1

ER -