Partitioning Study of Major and Trace Elements Between Dissolved and Particulate Phases in Bouregreg River (Morocco)

H. Bounouira; A. Choukri; S. Chakiri; O.K. Hakam; Z. Bejjaji

doi:10.15866/ireche.v8i2.12976

Partitioning Study of Major and Trace Elements Between Dissolved and Particulate Phases in Bouregreg River (Morocco)

H. Bounouira⁽¹⁾, A. Choukri^(2*), S. Chakiri⁽³⁾, O.K. Hakam⁽⁴⁾, Z. Bejjaji⁽⁵⁾

^(*) Corresponding author

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Abstract

This study focuses on the distribution of the major and trace elements in the dissolved and particulate phases of the Bouregreg river in Morocco. Water samples were analysed only by Inductively Coupled Plasma Mass Spectrometry (ICP-MS); however the suspended matter samples have been analyzed by ICP-MS and by Instrumental Neutron Activation Analysis (INAA). Measurements were carried out on three phases (<0.22µm, [0.22-0.45µm] and >0.45µm) obtained by filtration at the first time on a cellulose nitrate filters of porosity 0,45µm and of diameter 47mm and second time on filters of same nature but of porosity 0,22µm. The partitioning of element concentrations between dissolved and particulate phases for 0.22 µm and 0.45 µm filter was studied for each site. The concentrations of elements used in this study represent the mean values of the concentrations measured during three campaigns of sampling (winter 2004, summer 2004 and winter2005). The obtained results show that: (i) As, Ba, Cd, Li, Mn, Rb, Sb, Sr, U and Zn are present in the dissolved phase with concentrations superior to 50 % for the both filters, (ii) Al, Ce, Dy, Eu, Fe, Ho, La, Lu, Nd, Tb, Th, Tm, Yb and Zr are present in the particulate phase with concentrations superior to 50 % for the both filters and (iii) the concentrations distribution of Ca, Cr, Cs, Cu, Fe, Hf, Ni, Pb, Pr, Sn, Ta, Ti, V, W and Y change the tendency in the dissolved and particulate phases according to the used filter.
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Keywords

Dissolved Phase; Particulate Phase; 0.45 µm Filter; 0.22 Filter; Partitioning of Major and Trace Elements; River Water

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