
Keywords: طیف سنجی مادون قرمز تبدیل فوریه یا طیف سنجی FTIR; ASTM; American Society for Testing and Materials; BT; benzothiophene; DBT; dibenzothiophene; [CnMIM]Cl; 1-methyl-3-ankylimidazolium chloride; [CnMIM][[HSO4]; 1-methyl-3-alkyl imidazolium; [CnMIM][[CH3COO]; 1-methyl-3-alkyl imidazolium acetate; [BMIM]Cl; 1