UPTAKE OF NUTRIENTS AND HEAVY METALS INTO PLANTS AROUND OKPARA MINE: COMPARISON WITH SURFACE WATER CHEMISTRY IN ENUGU, SOUTHEASTERN NIGERIA

  • DAN C. Ozoko Department of Geology and Mining, Enugu State University of Science and Technology, P.M.B 01660, Enugu State, Nigeria - +2348033285798
  • UCHECHUKWU A. EZEH Department of Geology and Mining, Enugu State University of Science and Technology, P.M.B 01660, Enugu State, Nigeria -- +2347032614002

Abstract

The aim of this study was to determine the extent of heavy metal in natural waters and the uptake by plants that grow in the AMD zones/non-AMD zones in Okpara coal mine. The study areas were classified into zones A, B and c, Water samples from all the three zones were analyzed in the laboratory,Fifteen [15] water samples and six [6] plant leaves samples were collected from the area.The species of plant leaves collected include Polypodiaceae Pteridium Aquilinum, Anacardiaceae Mangifera Indica and Euphorbiaceae Alchornea Cordifolia. Results revealed that Zone A has low pH value of 3.2 and high SO4 (52.30mg/l – 54.42mg/l), Na+ (105.7mg/l – 108.0mg/l) and Fe3+ (7.08mg/l - 13.24mg/l) concentrations, indicating that AMD forming in the zone. In zone B, the pH value ranged from 3.5 to 4.67 and the SO4 (24.02mg/l – 49.55mg/l), Na+ (30.14mg/l – 72.35mg/l) and Fe3+ (0.02mg/l – 9.74mg/l) concentrations indicating the influence of AMD from zone A. Meanwhile, in zone C, the pH ranged from 5.4 – 6.8 and the SO4 (0.83mg/l 26.81mg/l), Na+ (12.05mg/l – 171.0mg/l) and Fe3+ (0.00mg/l – 0.01mg/l) concentrations indicating AMD-free in the zone. Furthermore, the results revealed that plant leaves within the mine are taking up heavy metals but the level of absorption has no effect on their system.

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Published
2016-12-15
How to Cite
OZOKO, DAN C.; EZEH, UCHECHUKWU A.. UPTAKE OF NUTRIENTS AND HEAVY METALS INTO PLANTS AROUND OKPARA MINE: COMPARISON WITH SURFACE WATER CHEMISTRY IN ENUGU, SOUTHEASTERN NIGERIA. Arabian Journal of Earth Sciences, [S.l.], v. 3, n. 2, p. 39-50, dec. 2016. ISSN 2409-4730. Available at: <http://asrongo.org/journals/index.php/AJES/article/view/41>. Date accessed: 17 june 2019.

Keywords

Okpara mine; Acid mine drainage; Plant leaves; Heavy metals