Journal ID : TRKU-21-05-2020-10763
[This article belongs to Volume - 62, Issue - 05]
Total View : 424

Title : HEALTH RISK ANALYSIS OF SOME TRACE METALS CONTAMINATION OF EDIBLE VEGETABLES IN BEKWARA, CROSS RIVER STATE, NIGERIA

Abstract :

The average concentration of trace metals namely; Cd, Co, Cr and Fe in edible vegetables and soil samples collected randomly in Bekwarra Urban Area of Cross River State were determined using flame Atomic Absorption Spectrometer (AAS). The Target Hazard Quotient (THQ) was also calculated based on the amount of the metals in the vegetables to evaluate the possible health risk associated with the consumption of the vegetables. The eight vegetables considered together with the soil samples where they were planted include: Amarathus spp., Corchorus olitorius, Murraya koenijii, Ocimium grattissimum, Solanum melongena, Talinum triangulare, Telfaira occidentalis and Vernonia amygdalina. These values revealed that the average concentration of Cr and Fe in mgkg-1 in the soil ranged between (0.058-0.068) and (0.009-0.043) respectively in the rainy season, and (0.051-0.061) and (0.008-0.038) respectively in dry season. The mean concentration of Cr and Fe accumulated by the vegetables in mgkg-1 was in the range 0.015-0.048 and 0.005-0.027 respectively in rainy season and 0.013-0.047 and 0.004-0.025 respectively in dry season. Cd and Co were string variables as their concentration was not detected in the soil or vegetables. The Target Hazard Quotient (THQ) values of Cr and Fe for all the vegetables were less than 1 implying that there is no health risk associated with the consumption of the vegetables at the time of this study. The values also reveal that there is some level of trace metals pollution of the area and the vegetables, though very low and within the permissible limits of WHO/FAO

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