Effect of pH and concentration on the complexation of calcium ions with humic acid extracted from composted oil palm bunches
P. O. Oviasogie1* and P.O.Okolo2
1Chemistry Division, Nigerian Institute for Oil Palm Research, (NIFOR), P. M. B. 1030, Benin City, Nigeria
2Chemistry Department, University of Benin, P. M. B. 1154 Benin City, Nigeria.
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