Mangifera indica AS BIOINDICATOR OF METAL POLLUTION ALONG MAJOR ROADSIDES WITHIN AKWA IBOM STATE....

Within Akwa Ibom State, leaves of Mangifera indica with high aerial exposure were collected from seven (7) local government areas: Ikot Ekpene; Ibiono Ibom, Uyo, Ukanafun, Nsit Ibom, Eket, and Ibeno. Similar samples were taken at each location at a distance of more than 25 km from the roadside and used as controls. The amounts of iron (Fe), copper (Cu), zinc (Zn), lead (Pb), cadmium (Cd), nickel (Ni), and chromium (Cr) in these samples and respective Controls were spectrophotometrically determined (Cr). Except for Pb and Cd, the amounts of these metals in roadside samples were found to be below their permitted limits for plants. The mean amounts of all metals examined in roadside samples were substantially greater than their corresponding values in respective Controls, indicating significant inputs from car emissions, according to this study. As a result, enrichment factor analysis revealed that all of the elements studied were more artificial than natural, with the exception of Zn. Iron had the highest metal content among all metals evaluated in both roadside and Control samples, with the exception of Zn at Ibeno. Specifically, this research has revealed that vehicle emissions can add considerable amounts of harmful metals to our ecosystems.

Please see the link :- https://www.ikprress.org/index.php/JACSI/article/view/3569