3.3.variation de l’ammonium (NH 4
+
) ………………………………………………………..76
3.4. Variation des phosphates (PO 4
3- ) ………………………………………………………..76
3.5. Variation des silicates (SiO 2 ) ……………………………………………………………77
4. Résultats des hydrocarbures ……………………………………………………………….78
4.1. Variation des hydrocarbures Aliphatiques (HA) ………………………………………..78
4.2. Variation des hydrocarbure polyaromatique (HPA) …………………………………….79
Conclusion ………………………………………………………………………………...82
Références bibliographiques………………………………………………..85
Annexes………………………………………………………………………90