Heavy Metals Contamination and Potential Human Health Risk via Consumption of Vegetables from Selected Communities in ONELGA, Rivers State, Nigeria

Ogbo, Ahiakwo Bright; Patrick-Iwuanyanwu, Kingsley C.

doi:10.9734/ejnfs/2019/v9i230053

Cited by 8 publications

(5 citation statements)

References 27 publications

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“…"The range of ILCR and ∑ILCR from consumption of all the evaluated samples as highlighted above, which raises the level of health concern for the consumer population as they may contribute to the population cancer burden is similar" to what was reported by Gebeyehu and Bayissa [45], in vegetables from Mojo Ethiopia, the ILCR and ∑ILCR reported from consumption meat and sea food samples from Xiamen, China [57]. The ILCR and ∑ILCR in Vegetables from Pearl River Delta South China [58], in fruits and vegetables from Jamaica [59], in vegetables from a Pb/Zn smelter in Central China [60] in vegetables grown in Patuakhali province Bangladesh [61] and in fruit, root and leafy vegetables, and fruits in a study conducted in a sub urban industrial area of Bangladesh [47].are also in line with the result of the present study. But the results differ from the results for vegetables from some selected communities from ONELGA Rivers State, Nigeria that reported non carcinogenic cancer risks from the vegetable samples in the study [62].…”

Section: Discussionsupporting

confidence: 77%

Heavy Metals and Health Risk Burden, How Safe is the Consumer Population?: A Study on the Heavy Metal Content of Soybeans Cultivated in Katsina State, North West Nigeria

Yaradua

Bungudu

Shuaibu

et al. 2022

AJACR

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The level of heavy metals in soybeans samples were evaluated to ascertain their likely health risks to the Katsina State populace. Atomic absorption spectrometry method was employed for the evaluation, while the three senatorial zones of the state were used for sampling. Using methods adapted from the United States Environmental Protection Agency (US EPA), the health risks to the population from the heavy metals in the samples were determined. The results have revealed the mean concentration (mg/kg) in decreasing order of concentrations to be for Zn (range: 1.204-1.432), Pb (range: 0.658-0.998), Fe (range: 0.563-0.687), Cr (range: 0.128-0.151) and Cd (range: 0.041-0.046), with the concentrations of Mn and Ni below the level of detection. The computed non-carcinogenic health risks from consumption of the samples were below 1 (THQ and HI>1). The cancer risk to the population lies beyond the threshold limit with the heavy metal Pb being the major contributor to the violation. It may be presumed that the Soybean samples in the study may add to the cancer manifestations in the population.

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Section: Discussionsupporting

confidence: 77%

Heavy Metals and Health Risk Burden, How Safe is the Consumer Population?: A Study on the Heavy Metal Content of Soybeans Cultivated in Katsina State, North West Nigeria

Yaradua

Bungudu

Shuaibu

et al. 2022

AJACR

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“…The risk assessment for carcinogenic exposure effect has revealed that the incremental lifetime cancer risk (ILCR) and the cumulative lifetime cancer risks (∑ILCR) were all within the safe limit for cancer in the children and the adults population for all the vegetable samples evaluated (Tables 6 and 7). The results are similar to the results for vegetables from some selected communities from ONELGA Rivers State, Nigeria that reported non carcinogenic cancer risks from the vegetable samples in the study (Ogbo and Patrick-Iwuanyanwu, 2019), but differ from carcinogenic risk vegetables reported in earlier studies from Katsina state, Nigeria (Yaradua et al, 2019a, b;Yaradua et al, 2020).…”

Section: Resultssupporting

confidence: 87%

Health risk indices associated with heavy metals from vegetables cultivated in Tsagero District, Rimi Local Government Area, Katsina State, Nigeria

Usman¹,

Isiyaku²,

Abdullahi³

et al. 2022

Bayero J. Pure App. Sci.

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Local preservation of vegetables involves drying to enhance shelf life. The drying processes could, in turn, contaminate the vegetables with environmental heavy metals. Ingestion of foods contaminated with heavy metals may lead to an increase in the chances of incurring cancer and other health disorders in the consumer population. This study investigated heavy metals contaminations and health risks associated with the consumption vegetables from Turaji, Tsagero District, Rimi Local Government Katsina State, North west Nigeria. The vegetables were three samples of Solanum lycopersicum L. (tomato) as fresh tomato, tomatoes sun-dried along tarred road side, and tomatoes air-dried on farmland soil; three samples of Capsicum annuum (sweet pepper) as fresh sweet pepper, sweet pepper sun-dried along tarred road side and sweet pepper air-dried on farmland soil. The samples were grinded, ashed and digested with HNO3 and HCl separately using standard methods. The heavy metals (Cu, Ni, Fe, Cr, Cd, Mn, Zn, and Pb) contents of the samples were analyzed using atomic absorption spectrophotometry. Daily intake, non-carcinogenic and carcinogenic risks as well as hazard indices of the heavy metals were determined. Results of the study showed that the vegetables analyzed generally have low levels of the heavy metals, with Ni being below detection level (BDL) in all the samples. All of the detected heavy metals concentrations were below the maximum permissible limits as set by the regulatory agencies. The calculated target hazard quotient (THQ) Health risk indices (HRIs) of the evaluated heavy metals in all the samples were therefore, less than 1. The Incremental Life time Cancer Risk (ILCR) to the population from consumption of the samples lies within the safe limit (≤10-4). From the results, these vegetables are hence, safe for human consumption.

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“…Studies have shown that Fe is the predominant metal in the soil of Southeast ecological region of Nigeria [31]. Activities of welders and the wind [25] effect in the dispersion of the ferralitic soil to several locations including the classrooms can contribute to Fe pollution in the environment. Iron is one of the essential metals for humans.…”

Section: Metal Concentrationsmentioning

confidence: 99%

Concentration and risk assessment of toxic metals in indoor dust in selected schools in Southeast, Nigeria

Ugwu

Ofomatah

2021

SN Appl. Sci.

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The health risk of students’ exposure to some potentially toxic metals in classroom dusts in Southeast, Nigeria was assessed. Dust particles were collected from classrooms in some public high schools and digested with aqua regia before analysis for selected metals by atomic absorption spectrophotometry. The geoaccumulation index, contamination factor and the pollution load index were assessed from the metal concentrations of the dust. Hazard quotient and cancer risk index were used to estimate the potential health risk of students’ exposure to the metals in the dust. The metal concentrations (mg/kg) were in the ranges of 1.57–175.38 (Cr); 0.93–463.28 (Cu); 31.94.76–6623.41 (Fe); 4.96–143.98 (Ni); 2.64–375.27 (Zn); and 2.35–53.96 (Pb).The geo-accumulation index values showed that all the dust samples were polluted with Fe and Cr; and unpolluted with other metals with few exemptions. The contamination factor values showed that all the schools but one had a low contamination status due to Ni and Cu. There was moderate contamination by Pb at all the schools but two. All the schools had high contamination of Cr and Fe. The pollution load index indicated that the quality of all the classrooms was deteriorated. The calculated values of hazard quotient indicated that ingestion of dust at most of the classrooms would have no significant risk of non-carcinogenic effects on the health of the students. Dermal contact with the dust at all the classrooms would expose students to adverse effects of Fe. There will be adverse effect due to Pb for dermal contact with dust at most of the schools. Ingestion of dust particles at classrooms in all the schools would have carcinogenic effect due to Ni. Correlation analysis indicated that the sources of the metals varied. This study provided baseline data for relevant bodies to use in monitoring and controlling pollution so as to protect students from toxic metals.

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Heavy Metals Contamination and Potential Human Health Risk via Consumption of Vegetables from Selected Communities in ONELGA, Rivers State, Nigeria

Cited by 8 publications

References 27 publications

Heavy Metals and Health Risk Burden, How Safe is the Consumer Population?: A Study on the Heavy Metal Content of Soybeans Cultivated in Katsina State, North West Nigeria

Heavy Metals and Health Risk Burden, How Safe is the Consumer Population?: A Study on the Heavy Metal Content of Soybeans Cultivated in Katsina State, North West Nigeria

Health risk indices associated with heavy metals from vegetables cultivated in Tsagero District, Rimi Local Government Area, Katsina State, Nigeria

Concentration and risk assessment of toxic metals in indoor dust in selected schools in Southeast, Nigeria

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