Seasonal variations in heavy metals in water and sediment samples from River Tano in the Bono, Bono East, and Ahafo Regions, Ghana

Nyantakyi, A. J.; Akoto, Osei; Fei‐Baffoe, Bernard

doi:10.1007/s10661-019-7744-1

Cited by 36 publications

(34 citation statements)

References 31 publications

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“…It begins from the river which is Tuobodom in the Techiman North District of the Bono East Region and runs through the Bono and the Ahafo Regions to the point where it joins the Ashanti Region of Ghana. There are several communities with population of about 1,276,444 people with diverse anthropogenic activities such as agriculture, commercial, wood processing, auto mechanics, food processing and mining within the catchment [23]. In terms of relief and land cover, the area is characterized by both flat and peak surfaces with wet evergreen and moist-semi deciduous ecological zones [8,24].…”

Section: Study Areamentioning

confidence: 99%

“…In terms of relief and land cover, the area is characterized by both flat and peak surfaces with wet evergreen and moist-semi deciduous ecological zones [8,24]. The buffer zone of the river bank within the study area has been compromised through human activities leaving few shrubs, tree canopy cover and bare area in some cases [23]. The rainfall pattern is characterized by dry and rainy seasons.…”

Section: Study Areamentioning

confidence: 99%

“…The concentrations of eleven (11) physicochemical parameters namely, temperature, pH, dissolved oxygen (DO), total suspended solids (TSS), total dissolved solids (TDS), biochemical oxygen demand (BOD), chemical oxygen demand (COD), electrical conductivity (EC), turbidity, redox potential and colour as well as five (5) nutrients namely, nitrogen: nitrate (N-NO 3 ), ammonia (N-NH 3 ), ammonium (N-NH 4 + ) and nitrite (N-NO 2 ) as well as total phosphorus (TP) were studied in water samples. The sampling locations starting from the source to downstream were named S 1 , S 2 , S 3 , S 4 , S 5 , S 6 , S 7 , S 8 and S 9 [23]. The selected sampling sites were mapped and geo-referenced with the help of a handheld Garmin 62SC Geographical Positioning System (GPS) gadget ( Table 1 and Figure 1).…”

Section: Study Design and Selection Of Sampling Sitementioning

confidence: 99%

“…Before sampling, sample bottles were treated as previously described by [27]. At the sampling site, the cleaned bottles were again rinsed with the river water for the container to equilibrate with water before sampling [23]. Collection of water samples were done by immersing the sampling bottles to a depth of about 20 cm from the surface of the River with the mouth pointing against direction of flow of the River as previously described by [23].…”

Section: Sampling and Sample Treatmentmentioning

confidence: 99%

“…About 1 L of water was collected in each of the plastic bottles [2]. Collected samples were corked, labelled and kept in an ice chest loaded with ice [23]. This procedure was repeated at all the nine (9) sampling sites.…”

Section: Sampling and Sample Treatmentmentioning

confidence: 99%

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Seasonal Variations in Physicochemical and Nutrient Water Quality of River Tano in Ghana

Nyantakyi¹,

Fei‐Baffoe²,

Akoto³

2020

IJEC

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Increasing anthropogenic activities within the catchment of River Tano continues to threaten the river water quality but data is limited. Seasonal variations in some physicochemical and nutrients water quality parameters of River Tano were studied between November, 2016 and October, 2017 using electrometric and standard methods. The objective was to assess changes in physicochemical parameters and nutrient concentrations with the season and to generate useful information for water quality managers and policy makers to ameliorate the problem. The results showed significantly higher rainy season values for all the nutrients and the physicochemical parameters studied. The source of River Tano recorded pH levels lower than WHO minimum permissible level for both seasons but got corrected after 7.2 km from the source. The river was also challenged in terms of colour (61.0±4.6 NTU), total phosphorus content (0.376±0.3 mg/L), total suspended solids (69.7±24 mg/L), turbidity (96.2±21 mg/L) and electrical conductivity (252±33 µS/cm) since the levels of these parameters exceeded the permissible levels for WHO. Some physicochemical parameters and nutrients correlated strongly to indicate a possible common source to the water body. Cluster analysis extracted two clusters of the seasonal sampling sites for physicochemical parameters and three clusters for nutrients also confirming their respective possible common sources to the river. It is recommended that the buffer zone policy must be enforced to avert further deterioration of the river water quality. Industries must be compelled to treat their effluent before discharging into water bodies

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Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Section: Study Design and Selection Of Sampling Sitementioning

confidence: 99%

Section: Sampling and Sample Treatmentmentioning

confidence: 99%

Section: Sampling and Sample Treatmentmentioning

confidence: 99%

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Seasonal Variations in Physicochemical and Nutrient Water Quality of River Tano in Ghana

Nyantakyi¹,

Fei‐Baffoe²,

Akoto³

2020

IJEC

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Spatio-temporal variability of trace metals and major ions in a small tropical river, southwest coast of India

Nishitha

Praveenkumarreddy

Khare

et al. 2019

Environ Monit Assess

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Assessment of heavy metal pollution and ecological risk in river water and sediments in a historically metal mined watershed, Northeast Japan

Bian

Tsuchiya

2021

Environ Monit Assess

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the outlet of the tributary within each sub-watershed was also sampled to capture the diffusional pollution status. The distributions of Zn, Cu, Cd, Pb and As in river water and sediments, as well as their pollution characteristics and ecological risks, were analysed under different hydrological conditions. Our findings provide evidence of the ecological risk in surface water induced by Zn, Cu and Pb pollution in the Kosaka River system. In a high proportion of the sub-watershed, there was moderate to strong enrichment in Cd, Cu and Zn in the river sediments. The sub-watersheds with high pollution levels and ecological risk were highly consistent with the subwatersheds encompassing abandoned mine sites. Suspended particles carried large amounts of Pb and Cu, especially on rainy days. The heavy metal contents in river water were very sensitive to occasional rainfall events; rainy days posed the most risk to organisms in the Kosaka River, followed by the lowwater-level season and the high-water-level season.

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Seasonal variations in heavy metals in water and sediment samples from River Tano in the Bono, Bono East, and Ahafo Regions, Ghana

Cited by 36 publications

References 31 publications

Seasonal Variations in Physicochemical and Nutrient Water Quality of River Tano in Ghana

Seasonal Variations in Physicochemical and Nutrient Water Quality of River Tano in Ghana

Spatio-temporal variability of trace metals and major ions in a small tropical river, southwest coast of India

Assessment of heavy metal pollution and ecological risk in river water and sediments in a historically metal mined watershed, Northeast Japan

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