Using Determination of ( Fe, Mn, Ni ) in Syrian Costal Sand by BCR sequential extraction method.

Abstract

Sequential extraction is a useful method of identifying how toxic trace metals bind to sand particles and the strength of these bonds. Sequential extraction uses a series of extractions on the same sample, by using extraction liquids expected to promote decreasing mobility of metal fractions in the sand . The selected sequence process named BCR (Community Burean of Reference), is consisting of four-steps, but with improvements in the fourth step (so it has become two parts ;the first is: by using the Aqua regia and the second is : by using Hydrofluoric acid).Seven different samples of sand from coastal areas in Syria have been studied. (Fe ,Mn,Ni) have been analyzied and their concentrations have been determined by using Atomic Absorption Spectrometry (AAS),the results have shown that the increasing percentage concentration for Fe, Mn,Ni in the residual fraction, are: for Fe between 0.97277% - 4,11822% , for Mn between 0.022437% - 0.501866%, and for Ni between 0,0009714% - 0.03034%.