Heavy metal contamination of surface water and bed-sediment quality for ecological risk assessment of Gomti River, India

Kumar, Ankit; Saxena, Priya; Kisku, Ganesh Chandra

doi:10.1007/s00477-023-02447-8

Cited by 9 publications

(1 citation statement)

References 46 publications

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“…For instance Zhuang et al (2021) reported increased metal(oid) pollution load and ecological risk in Danjiang river in China, Zhi-hua et al (2021) also reported surface water pollution from BOD, COD, heavy metals and antibiotics in yellow river China. Kumar et al (2023) recently reported surface water pollution load by heavy metals and ecological risk in Gomti river in India. Large quantities of wastes have been reported to be discharged into river regimes (Badr et al 2013;Amany et al 2019), alongside complex anthropogenic activities that go on, and more predominantly practiced in Sub-Saharan Africa, South eastern, Nigeria.…”

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confidence: 99%

Environmental pollution loads on surface water chemistry and potentially ecological risks of inland aquatic ecosystem in South-Eastern State, Nigeria

et al. 2023

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The study assessed water chemistry of Nworie inland aquatic ecosystem in South eastern, Nigeria from January, 2020 to December 2022. Water samples were taken from the upper, middle, and lower river at 200 m interval. Data collected were subjected to multivariate analyses. Results of physicochemical tracers indicated mean CaCO3, Ca2+&Chemical Oxygen Demand (COD) to be 172.8 mg/l, 103.1 mg/l, 16.50 mg/l respectively above the World Health Organisation (WHO) critical limits, while turbidity (NTU), dissolved oxygen (DO) mgl−1, chloride (Cl−) mg/l, Magnesium (Mg) mg/l, Sodium (Na) mg/l, sulphate (SO42+) mg/l, nitrate (NO3−) mg/l, potassium (K) mg/l and phosphate (PO34) were below the limits. Heavy metals (mg/l) showed mean values viz: Cd 2+(0.053), Cr2+(0.049), Fe2+(0.443), Ni2+(0.024), and Pb (0.787) which were all above some critical global limits, except for Cu2+ and Zn2+ and in decreasing abundance: Pb2+ ≥ Fe2+ ≥ Cu2+ ≥ Zn2+ ≥ Cd2+ ≥ Cr2+ ≥ Ni2. Physicochemical tracers and elements in water correlated in both positive and negative directions. Principal component analysis (PCA) showed significant loads of PC3; CaCO3, NO3, COD, DO, Ca, PO4, Cu, Fe, Zn, PC2; moderate loads of SO4, Cl, & Na originating from complex human activities. Contamination factor (Cf), recorded high for cadmium while pollution load & ecological risk recorded low in decreasing order: Cr2+ ≥ Zn2+ ≥ Ni2+ ≥ Cd2+ ≥ Pb2+ ≥ Cu2+ ≥ Fe2+ with contamination degree in order of: Lower River (LR) ≥ Upper River(UR) ≥ Middle River(MR) and low risk index. Continuous monitoring of human activities along the whole River is important to mitigate any aquatic ecosystem damage for water quality sustainability.

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Section: Introductionmentioning

confidence: 99%

Environmental pollution loads on surface water chemistry and potentially ecological risks of inland aquatic ecosystem in South-Eastern State, Nigeria

et al. 2023

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Risk assessment for the surface water quality evaluation of a hydrological basin

Brito,

Gonçalves,

Pedra

2024

Stoch Environ Res Risk Assess

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This paper proposes a risk assessment methodology for evaluating the surface water quality of hydrological basins based on physico-chemical parameter concentrations. Considering the Douro River basin in Portugal and monthly recorded dissolved oxygen and conductivity parameter measurements in 18 water sampling stations from January 2002 to December 2013, the work intends to answer the research question of identifying the riskiest periods for water pollution in the year and classifying the water sampling stations in terms of risk for water pollution. The methodology consists first in determining the pollution risk implied by the physico-chemical parameters, based on the monthly water station measurements, using six different risk measures, namely mean, variance, loss probability, entropy, mean excess loss and value at risk. The risk values are ordered according to each risk measure and a final ranking is established through a ranking aggregation method. The final ranking permitted identifying the high risk period as ranging from May to October and the low risk period from November to April. Furthermore, July was classified as riskiest month concerning the dissolved oxygen concentration, and August as riskiest month regarding the conductivity levels. On the other hand, the ranking allowed classifying the water sampling stations, previously grouped in clusters, in terms of similar risk for water pollution: six sampling stations in the west of the basin formed the riskiest cluster in the dry period considering the dissolved oxygen concentrations, and four of those stations formed also the riskiest cluster concerning the conductivity levels.

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Composition of heavy metals in sediment, water, and fish of the Ganga and Yamuna Rivers in two major cities of India

Kumar,

Saxena,

Srivastava

et al. 2024

Environ Monit Assess

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Heavy metal contamination of surface water and bed-sediment quality for ecological risk assessment of Gomti River, India

Cited by 9 publications

References 46 publications

Environmental pollution loads on surface water chemistry and potentially ecological risks of inland aquatic ecosystem in South-Eastern State, Nigeria

Environmental pollution loads on surface water chemistry and potentially ecological risks of inland aquatic ecosystem in South-Eastern State, Nigeria

Risk assessment for the surface water quality evaluation of a hydrological basin

Composition of heavy metals in sediment, water, and fish of the Ganga and Yamuna Rivers in two major cities of India

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