This research included determination of chemical composition of al-ahdaab crude oil (kute-Iraq) using liquidsolid chromatography method. The current study involved separation the components of crude oil by column chromatography was packing with alumina (AL 2 O 3) as a stationary-phases and several solvent as a mobile phase. The results of crude oil fractionations were 17.01% Asphaltene, 82.99% Maltene, which separated to Paraffinic (saturated) 44.11%, Aromatic 30.11% and Resin 4.20%. Crude oil fractionations were characterized using Nuclear Magnetic Resonance 1 HNMR and Fourier Transform Infrared Spectrometer FT-IR to determine the chemical composition of each part, which is that represents the first study and novel results. This study also clarified the paraffinic compounds are the main part of materials in the crude oil composition.

Study and separating of crude oil components from Al-Rashidiya field-Eastern Baghdad-Iraq was achieved. Samples were taken and separated into two important parts Asphaltene and Maltin (saturated, aromatic and resin). The separation was done by organic solvent such as n-hexane. Maltin separated by column chromatography technique (liquid-solid) to basic saturated, aromatic and resin components, this technique called (SARA) (saturated, aromatic, resin and asphaltene). Three absorption layers used, alumina layer Al 2 O 3 , silica SiO 2 and combination layer from Al 2 O 3 and SiO 2. All the components were collected dried and weighted. In order to determining the classification types, isolated compounds