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Research Journal of Environmental Toxicology
  Year: 2017 | Volume: 11 | Issue: 2 | Page No.: 62-71
DOI: 10.3923/rjet.2017.62.71
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Health Risk Assessment of Selected Dumpsites in Amata-Akpoha Community Using Cultivated Edible Plants
Nwogo Ajuka Obasi , Stella Eberechukwu Obasi, Getrude Obianuju Aloh and Emmanuel Okewe Nnachi

Background and Objective: In Nigeria, explosion in population growth and technological advancement has led to increase in the generation of high quantity of industrial and domestic solid wastes. These solid wastes are poorly managed in rural and urban communities and in most cases are indiscriminately dumped at arable farm lands where they constitute environmental pollution. The solid wastes undergo decompositions and are burnt in open air during dry seasons. The composts formed are often used by dwellers as manures for cultivation of edible plants. This study investigated the uptake of heavy metals by edible plants cultivated in the vicinity of selected dumpsites in Amata-Akpoha, Afikpo North, Ebonyi State, Nigeria to extrapolate the associated ecological and health risks. Materials and Methods: The soil and plant samples were obtained from farmlands in the vicinity of Ezi Mba, Amaozara and Evoekpiri dumpsites in Akpoha and a nearby farm land at Edaka where there was no dumping of waste in the vicinity (control site). The samples were processed and analyzed using standard protocols. Data obtained were analyzed using one way analysis of variance (ANOVA) by SPSS version 9.2 (Inc., Chicago, USA) and significant differences were established at p<0.05 using Duncan multiple range test. Results: The results obtained showed that the total extractable metals varied significantly (p<0.05) from one dumpsite to another and were generally higher in the dumpsites compared to control site. Results of speciation indicated that all the metals studied had more than 65% non-residual fractions except Cu. The mean order of mobility and bioavailability of the metals were: Fe>Zn>Mn>Cd>Pb>Cr>Ni>Cu in the sites. Total mean metal concentration in Amaranthus hybridus, Telfairia occidentalis and Talinum triangulare were significantly higher (p<0.05) in the dumpsites samples compared to control site. The different soil-plants transfer indices varied and indicated that the plants have varied potentials for phytoextraction and phytostabilization of the metals. Conclusion: The high level of metals in the waste soils indicated anthropogenic inputs and the soil-plants transfer coefficients for the edible plants indicated increased ecological and health risks implications. Hence, there is urgent need for enacting and enforcing policies on regulatory standards.
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How to cite this article:

Nwogo Ajuka Obasi, Stella Eberechukwu Obasi, Getrude Obianuju Aloh and Emmanuel Okewe Nnachi, 2017. Health Risk Assessment of Selected Dumpsites in Amata-Akpoha Community Using Cultivated Edible Plants. Research Journal of Environmental Toxicology, 11: 62-71.

DOI: 10.3923/rjet.2017.62.71


14 July, 2017
Ragip Adiguzel :
I will send this resarch article to the environmental engineer researchers and make them aware of the consequences. Thus, researchers can refer to this article in similar studies.






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