Bioavailability and Assessment of Metal Contamination in Surface Sediments of Rades-Hamam Lif Coast, around Meliane River (Gulf of Tunis, Tunisia, Mediterranean Sea)

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Fractions</td><td class="align_center">Methods</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">F1: exchangeable fraction</td><td class="align_center">Exchangeable fraction from sediment sample with MgCl<sub>2</sub> solutions</td></tr><tr><td class="align_left">F2: metals bound to carbonates</td><td class="align_center">The metals bound to carbonates were extracted with a NaOAc solution from the residue of the previous fraction</td></tr><tr><td class="align_left">F3: Fe/Mn oxides fraction (reducible fraction)</td><td class="align_center">The metals bound to this fraction were extracted from the residue of the previous fraction with NH<sub>2</sub>OH, HCl, and HOAc solutions</td></tr><tr><td class="align_left">F4: organic matter and/or sulfide fraction (oxidizable fraction)</td><td class="align_center">Metals bound to this fraction were extracted from the residue of stage (2) with HNO<sub>3</sub>, H<sub>2</sub>O<sub>2</sub>, and NH<sub>4</sub>OAc solutions</td></tr><tr><td class="align_left">F5: residual fraction</td><td class="align_center">Metals were extracted by digestion of the remaining residue of the previous stages by HF and HClO<sub>4</sub></td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Heavy metals sequential procedures.</div>

Journal of Chemistry

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Table 2

Table 2: Bioavailability and Assessment of Metal Contamination in Surface Sediments of Rades-Hamam Lif Coast, around Meliane River (Gulf of Tunis, Tunisia, Mediterranean Sea) 

Table 2 | Bioavailability and Assessment of Metal Contamination in Surface Sediments of Rades-Hamam Lif Coast, around Meliane River (Gulf of Tunis, Tunisia, Mediterranean Sea) 