Spatial and seasonal variation in physicochemical parameters and heavy metals in Awash River, Ethiopia

Eliku, Temesgen; Leta, Seyoum

doi:10.1007/s13201-018-0803-x

Cited by 67 publications

(46 citation statements)

References 40 publications

(29 reference statements)

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“…It is reported that iron is a major inorganic water quality problem and is mainly transported in groundwater in the reduced form as Fe2+ [59]. Amadi[60], Eliku and Leta[51] reported lower Fe concentrations (0.011 to 2.897 and 1.11 to 4.12 mg/L) in water from Sosiani river (Kenya) and Awash river (Ethiopia) than is reported in Nyabarongo and Nyabugogo rivers in this study. Elevated levels of Fe in water (12.6 to 15.51 mg/L) comparable to that reported in this study were reported in Mara river of Tanzania by Kihampa and Wenaty…”

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confidence: 39%

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Physicochemical Quality of Water and Health Risks Associated with the Consumption of the Extant African Lung Fish (<i>Protopterus annectens</i>) from Nyabarongo and Nyabugogo Rivers, Rwanda

Omara¹,

Nteziyaremye²,

Akaganyira³

et al. 2019

Preprint

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Water is an indispensable natural resource that is often prodigiously threatened by anthropomorphic activities. This study evaluated the physicochemical properties of water and selected heavy metals in edible muscles of a piscivorous fish (Protopterus annectens) from Nyabarongo and Nyabugogo rivers of Rwanda. Edibility health risk was evaluated using the target hazard quotient method. Water samples were taken in triplicate from Ruliba station and Kirinda bridge on Nyabarongo river and Giticyinyoni on Nyabugogo river. Fish samples were obtained from the sampling stations on Nyabarongo river. All samples were analyzed following standard methods and analytical results indicated that the average temperature, pH, total dissolved solids and electrolytic conductivity of water from the rivers were within WHO acceptable limits. The statistical mean concentrations of the ionic components of the water samples were 1.61 ± 0.03, 0.53 ± 0.002, 0.24 ± 0.02 and 0.051 ± 0.01 mg/L for Fe, Mn, Cu and Pb respectively at Ruliba station and 0.63 ± 0.02, 0.02 ± 0.002, 0.09 ± 0.01, 0.06 ± 0.002 and 0.75 ± 0.02 mg/L for Fe, Mn, Zn, Cr and Pb respectively at Kirinda bridge. Water from Giticyinyoni had 1.57 ± 0.02, 0.49 ± 0.03, 0.29 ± 0.058, 0.43 ± 0.058, 0.15 ± 0.00 and 0.59 ± 0.058 mg/L of Fe, Mn, Cu, Zn, Cr and Pb respectively. Zinc, Cu, Cr and Cd were below detection limits in samples from Ruliba station and Kirinda bridge (Nyabarongo river). Edible muscles of P. annectens from Nyabarongo river contained 272.8 ± 0.36, 292.2 ± 0.25, 8.8 ± 0.36, 135.2 ± 0.15, 148.0 ± 0.21 and 432. 0 ± 0.50 mgkg-1 for Fe, Mn, Cu, Zn, Cr and Pb at Ruliba station and 336.0 ± 0.70, 302.6 ± 1.22, 6.4 ± 0.26, 44.7 ± 0.20, 138.2 ± 0.17 and 302.4 ± 1.50 mgkg-1 for Fe, Mn, Cu, Zn, Cr and Pb respectively at Kirinda bridge. Health risk assessment indicated that consumption of the edible muscles of P. annectens may lead to deleterious health effects as reflected by values of target hazard quotients being greater than one. Therefore, the Rwandese government should lay strategies to reduce pollution of the rivers. Further research should evaluate the heavy metal content of metabolically active organs of P. annectens from Nyabarongo river as well as the microbiological profile of water from the rivers.

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confidence: 39%

“…High TDS affects the aesthetic quality of water, interfere with washing operations and can be corrosive to plumbing fixtures [47]. [50,51]. Excess amount of TN in water may lead to low levels of dissolved oxygen and negatively alter various plant life and organisms.…”

Section: Electrical Conductivity and Total Dissolved Solidsmentioning

confidence: 99%

Physicochemical Quality of Water and Health Risks Associated with the Consumption of the Extant African Lung Fish (<i>Protopterus annectens</i>) from Nyabarongo and Nyabugogo Rivers, Rwanda

Omara¹,

Nteziyaremye²,

Akaganyira³

et al. 2019

Preprint

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“…Laboratory analyses of nineteen physico-chemical parameters were generally performed following standard protocols [10] [11]. Colour was measured using the platinum-cobalt standard method using HACH DR/2010 spectrometer [3].…”

Section: Physico-chemical Parameter Measurementsmentioning

confidence: 99%

“…This deterioration has been attributed to both natural processes such as weathering of underlying crustal materials, erosion, precipitation and anthropogenic activities which are triggered by climate change, agricultural land use, industrial and sewage effluent discharge [1] [2]. Anthropogenic activities are major contributors of pollutants to surface water resources in developing countries such as Uganda, the most important being urban sewage, agriculture and industrial effluents which are well known for nutrient loading and heavy metal pollution of water bodies [3] [4] [5]. Moreover, river water resources are important in promoting human development as they serve as domestic water sources; provide water for agriculture, industries and transport.…”

Section: Introductionmentioning

confidence: 99%

“…However, the rivers are turned into dumping ground for wastes, especially in African countries like Uganda. As a result, their water quality is affected significantly by solid and liquid wastes from industries, homesteads, sewage, erosion and waste from agricultural fields [3]. This makes rivers to become susceptible to pollution from urban, industrial and agricultural activities that occur in their water sheds.…”

Section: Introductionmentioning

confidence: 99%

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Spatial Variation in Physicochemical Surface Water Quality in River Rwizi, Western Uganda

Ojok¹,

Wasswa²,

Nakiguli³

et al. 2019

JWARP

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River Rwizi originates from the Buhweju hills. It is a major source of water for the inhabitants of Mbarara Municipality and surrounding environment. In this study, spatial variation of water quality in River Rwizi section within Mbarara Municipality was determined using cluster analysis. Laboratory analysis was conducted on water samples from five sites along the river section using standard methods for: pH, EC, TSS, TDS, turbidity, temperature, total hardness, alkalinity, salinity, colour, NH 3-N, 2 4 SO − , BOD, COD, DO, Ca, Mg, Fe, and Mn. Cluster analysis grouped the study sites into slight pollution (Spencon, GBK), moderate pollution (Katete) and high pollution (BSU, Kakoba) for dry season. For rain season, order was: slight pollution (BSU, Spencon), moderate pollution (GBK) and high pollution (Kakoba, Katete), basing on similarity of water quality variables. These results show that water pollution resulted primarily from domestic waste water, agricultural runoff and industrial effluents. Thus, water from River Rwizi is not suitable for drinking in both dry and wet seasons.

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Teeth reveal juvenile diet, health and neurotoxicant exposure retrospectively: What biological rhythms and chemical records tell us

et al. 2021

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Integrated developmental and elemental information in teeth provide a unique framework for documenting breastfeeding histories, physiological disruptions, and neurotoxicant exposure in humans and our primate relatives, including ancient hominins.Here we detail our method for detecting the consumption of mothers' milk and exploring health history through the use of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) mapping of sectioned nonhuman primate teeth. Calciumnormalized barium and lead concentrations in tooth enamel and dentine may reflect milk and formula consumption with minimal modification during subsequent tooth mineralization, particularly in dentine. However, skeletal resorption during severe illness, and bioavailable metals in nonmilk foods, can complicate interpretations of nursing behavior. We show that explorations of the patterning of multiple elements may aid in the distinction of these important etiologies. Targeted studies of skeletal chemistry, gastrointestinal maturation, and the dietary bioavailability of metals are needed to optimize these unique records of human health and behavior.

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Spatial and seasonal variation in physicochemical parameters and heavy metals in Awash River, Ethiopia

Cited by 67 publications

References 40 publications

Physicochemical Quality of Water and Health Risks Associated with the Consumption of the Extant African Lung Fish (<i>Protopterus annectens</i>) from Nyabarongo and Nyabugogo Rivers, Rwanda

Physicochemical Quality of Water and Health Risks Associated with the Consumption of the Extant African Lung Fish (<i>Protopterus annectens</i>) from Nyabarongo and Nyabugogo Rivers, Rwanda

Spatial Variation in Physicochemical Surface Water Quality in River Rwizi, Western Uganda

Teeth reveal juvenile diet, health and neurotoxicant exposure retrospectively: What biological rhythms and chemical records tell us

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