Evidence map›Paper›PMID 34935079›Full record

ArticleEnvironmental monitoring and assessment2021

Urbanizing with or without nature: pollution effects of human activities on water quality of major rivers that drain the Kumasi Metropolis of Ghana.

Godfred Darko, Seth Obiri-Yeboah, Stephen Appiah Takyi, Owusu Amponsah, Lawrence Sheringham Borquaye, Lydia Otoo Amponsah, Benedicta Y Fosu-Mensah

Abstract read
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In one paragraph

Article in Environmental monitoring and assessment, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

  1. Metal Concentrations in Edible Leafy Vegetables and Their Potential Risk to Human Health.International journal of environmental research and public health · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Improving Water Quality Index Prediction Using Regression Learning Models.International journal of environmental research and public health · 2022
    Article
  7. Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Godfred DarkoDepartment of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana. gdarko.sci@knust.edu.gh.ORCID http://orcid.org/0000-0001-7157-646X
Seth Obiri-YeboahDepartment of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Stephen Appiah TakyiDepartment of Planning, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Owusu AmponsahDepartment of Planning, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Lawrence Sheringham BorquayeDepartment of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Lydia Otoo AmponsahDepartment of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Benedicta Y Fosu-MensahInstitute for Environment and Sanitation Studies, College of Basic and Applied Science, University of Ghana, Legon, Accra, Ghana.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The effects of urbanization such as population upsurge, increased industrialization, urban agriculture, and rural-urban migration of persons exert pressure on the limited water resources in most cities. This study investigated the impact of human activities on the water and sediment quality of the three main rivers (Wiwi, Subin, and Suntre) in Kumasi, the second-largest city in Ghana. The physicochemical parameters and the concentrations of contaminants, including heavy metals, polycyclic aromatic hydrocarbons, pesticide residues, and microbial loads in the rivers, were linked to the specific human activities at the riverbanks. While all the 37 pesticide residues investigated in river sediments had concentrations below the detection limits (0.005 mg/kg for organochlorines, 0.010 mg/kg for organophosphates, and 0.010 mg/kg for synthetic pyrethroids), the study showed that the sediments are polluted with petrogenic and pyrogenic polycyclic aromatic hydrocarbons. River Subin, the most polluted among the three rivers, recorded benzo[e]pyrene concentrations up to 47,169 µg/kg. The geoaccumulation index and concentration factors show that the rivers are highly contaminated with metals such as cadmium, chromium, mercury, and arsenic and are related to human activities. The microbial quality of the rivers was poor, recording specific microbial loads of 6.8, 4.1, and 1.5 × 10

Indexed as

Metals, HeavyPolycyclic Aromatic HydrocarbonsWater Pollutants, ChemicalEnvironmental MonitoringGeologic SedimentsGhanaHuman ActivitiesHumansRiversWater QualityMetals, HeavyPolycyclic Aromatic HydrocarbonsWater Pollutants, ChemicalContaminationEnvironmental impactIndustrializationRural–urban migrationUrbanizationWater pollution

Identifiers

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.