Distribution and ecological risk assessment of herbicide residues in water, sediment and fish from Anyim River, Ebonyi State, Nigeria

Nwinyimagu, Amaechi Joshua; Eyo, Joseph Effiong; Nwonumara, Godwin Nkwuda

doi:10.1016/j.etap.2023.104131

Cited by 9 publications

(4 citation statements)

References 24 publications

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“…However, when compared to the values recommended by the European Union and the World Health Organization, which allow a maximum limit concentration of 0.1 µg/L for any pesticide in drinking water and a total sum of pesticides not exceeding 0.5 µg L/1, it is observed that surface water from the sampled subcatchment did not meet potable water standards. Unfortunately, similar ndings were reported byNwinyimagu et al (2023) andDauda (2020) in other rivers with similar land use. Consequently, there is an urgent need to strengthen the monitoring and regulation of pesticide use to address this critical issue.…”

supporting

confidence: 89%

“…Several studies have extensively investigated pesticide contamination in the freshwaters of Nigeria (Nwinyimagu et al, 2023;Nuntah et al, 2020;Dauda 2020), speci cally in North Central Nigeria (Unyimadu et al, 2018). However, scanty information is known about the linkage of LULC change and the incidences of organic pollution, especially pesticides, in rivers in north-central Nigeria.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the Relationship Between Land Use and Pesticide Contamination in a Tropical Rural Catchment: A Case Study of River Chanchaga

Ikayaja,

Tshimanga,

Ndatimana

et al. 2024

Preprint

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Freshwater ecosystems are vulnerable to various land uses, resulting in concern for aquatic organisms and humans. Understanding the occurrence of pesticide contamination is necessary to safeguard aquatic biodiversity and human health. Against this background, our study aimed to assess the effect of various land uses on pesticide contamination by evaluating three selected sites according to land use class: a control site (CON), an agricultural area (S1), and an urban area (S2). Various classes of land use around the catchment were determined using ArcGIS 10.8 GIS software, while analysis of pesticide residues was carried out using the liquid-liquid extraction method, followed by gas chromatography-mass spectrometry (GC/MS). A total of 10 herbicides and 12 insecticides were recorded in each sampled sub-catchment, with a statistically significant difference across the sampled sub-catchment. Sampled sites located in agricultural and urban areas recorded higher concentrations of pesticide residues compared to sites located in natural areas, with less anthropogenic influence, reflecting differences in pesticide usage. Redundancy analysis (RDA) revealed crops and urbanized land use were the main sources of pesticide contamination in the water, as pesticides are predominantly used on farms and in various households. Their presence in the water may have potentially detrimental effects on aquatic biodiversity because pesticides have been associated with various health issues. It was evident that all sampled sub-catchments had pesticide concentrations exceeding the WHO permissible limit for human consumption. Implementing alternative methods for managing pests and weeds without relying on pesticides is crucial for sustainable agriculture and environmental preservation.

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supporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Exploring the Relationship Between Land Use and Pesticide Contamination in a Tropical Rural Catchment: A Case Study of River Chanchaga

Ikayaja,

Tshimanga,

Ndatimana

et al. 2024

Preprint

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“…According De et al [8], cited by Sharma et al [9], herbicides are the most pesticides uses around the world, 47.5% of the total pesticides. They heavy use in cropping system eventually made them ubiquitous, with adverse effects on environment, particularly on nontarget organisms and human health [10,11]. Triazine herbicides and substituted urea herbicides are among the most uses.…”

Section: Introductionmentioning

confidence: 99%

“…Triazine herbicides and substituted urea herbicides are among the most uses. Their severe adverse for aquatic biota are reported by many studies [10,12].…”

Section: Introductionmentioning

confidence: 99%

Seasonal contamination level of the waters from the Déganobo lake system by fourteen herbicides residues and their ecological and health implication

Kouadio Fabrice Arthur KONAN,

Marcel Konan YAO

2023

GSC Adv. Res. Rev.

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The aim of this study was to assess the seasonal contamination level of the waters from the Déganobo lake system by 9 triazine herbicides and 5 substituted urea herbicides and, their ecological and risks implications. It was conducted during one year (from August 2021 to July 2022). The waters samples, collected monthly, were analysed according M.A. 403-Pest 3.1 standard with some modifications. The ecological and health risks were assessed by using the Directive 2013/39/EU, the MDDP water quality guidelines, the SEQ-Eau V2 water quality guidelines and, the Quotient Risk. Simazine was the herbicide residue the most important, whereas atrazine, chlorotuluron and, terbutryn were the least important in all season. Diuron, fenuron, monuron and, Terbuthylatrazine were not detected in these waters in all seasons. The hydroclimate, as well the temperature, transparency and, dissolved oxygen of these waters, were influenced significantly the seasonal dynamic of the herbicide residues detected in these waters. All the water quality guidelines used in this study and the quotient risk were highlighted the relative high pollution of these waters with likely severe health risks for its biota and for human in all season, because of its high seasonal concentrations in simazine.

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Human health risk assessment on pesticide residues in fishes of kuttanad wetland, a globally important agricultural heritage system

K.V.,

Nazar,

A.S.

et al. 2024

Environ Monit Assess

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Distribution and ecological risk assessment of herbicide residues in water, sediment and fish from Anyim River, Ebonyi State, Nigeria

Cited by 9 publications

References 24 publications

Exploring the Relationship Between Land Use and Pesticide Contamination in a Tropical Rural Catchment: A Case Study of River Chanchaga

Exploring the Relationship Between Land Use and Pesticide Contamination in a Tropical Rural Catchment: A Case Study of River Chanchaga

Seasonal contamination level of the waters from the Déganobo lake system by fourteen herbicides residues and their ecological and health implication

Human health risk assessment on pesticide residues in fishes of kuttanad wetland, a globally important agricultural heritage system

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