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IJCRR. 2014; 6(21): 01-05


ANALYSIS OF MANGANESE CONCENTRATION IN SOME TREE BACKS AND SOILS FROM YOBE STATE NIGERIA

R.O.Akinsola, M.I.Mohammed, D.I.Malami.

Abstract
Khaya senegalensis, and Azadirachta indica from Yobe State, north east, Nigeria, and the soils around these trees were analysed for their Manganese concentrations using atomic absorption spectrophotometry. The results of the analysis indicate various concentration levels obtained from soil solution through mineral uptake by plants. The mean values of Mn ranges between 4.59 - 33.32µgg-1 in the bark and 4.69 - 28.95µgg-1 in the soil. All the values obtained correlate well with the anthropogenic activities in the study area and are below the recommended safe limits for heavy metals by WHO, FAO, EU, and NESREA guidelines. The statistical comparison of the values between the bark and soil shows correlation at P < 0.01 and significant difference at P < 0.05. The study further demonstrates the suitability of some of the trees as a good bioindicator.

Key words: Khaya senegalensis, Azadirachta indica, Manganese, Soil



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