Interactions in chromatographic separati
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Ø Midttun; O.M Kvalheim
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Article
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2001
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Elsevier Science
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English
⚖ 191 KB
Resins were extracted from crude oils by adsorption onto various particles followed by desorption using various solvent combinations in a two-step desorption procedure. The extracted resins were analyzed using infrared spectroscopy, followed by local principal component analysis on the polar and aro