ISSN:
1612-1112
Keywords:
Polycyclic aromatic compounds
;
Alkylated PAC
;
Extraction methods
;
Backflush HPLC
;
Evaluation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary Semipreparative HPLC utilizing a polar bonded phase was applied to the isolation of polycyclic aromatic compounds (PAC) from complex samples using a backflush technique. Aminopropyl- and cyanopropyl-modified silica was tested. Aminopropyl-modified silica was found to be superior in achieving rapid, selective and non discriminating isolation of PAC. This was compared with the most commonly used isolation methods, dimethylsulfoxide (DMSO), dimethylformamide (DMF) and nitromethane liquid-liquid extractions, and silica and SephadexLH-20 open column chromatography. Strong discrimination of alkylated PAC and polycyclic aromatic nitrogen heterocyclics (PANH) was found for the liquid-liquid extractions and the LH-20 column chromatography. These comparisions were made using both standard compounds and a sample of used crankcase oil, indicating the necessity of using a real sample for evaluation of extraction methods. Recoveries of 42 PACs are reported.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02261469
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