Simple method for the chromatographic separation and determination of mono-, di- and tricyclic aromatic hydrocarbons in heavier petroleum fractions

1984 ◽  
Vol 317 (1) ◽  
pp. 37-41 ◽  
Author(s):  
Veda Ramaswamy ◽  
P. Kumar ◽  
P. L. Gupta
Keyword(s):  
Aromatic Hydrocarbons ◽  
Chromatographic Separation ◽  
Simple Method ◽  
Petroleum Fractions

Determination of aromatic hydrocarbons in petroleum fractions by infrared spectroscopy

The Analyst ◽  
1985 ◽  
Vol 110 (12) ◽  
pp. 1477 ◽  
Author(s):  
Abdul-Halim A.-K. Mohammed ◽  
Karim Hankish
Keyword(s):  
Infrared Spectroscopy ◽  
Aromatic Hydrocarbons ◽  
Petroleum Fractions

scholarly journals Adsorption and determination of polycyclic aromatic hydrocarbons in water through the aggregation of graphene oxide

2018 ◽  
Vol 16 (1) ◽  
pp. 716-725 ◽  
Author(s):  
Bingjun Han ◽  
Ya Li ◽  
Bing Qian ◽  
Yan He ◽  
Lixu Peng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Water Samples ◽  
High Efficiency ◽  
Solid Phase ◽  
Simple Method ◽  
Uniform Dispersion ◽  
Polycyclic Aromatic

AbstractIn this study, a simple method was developed for the aggregation of graphene oxide (GO) with the addition of NaCl to concentrate and separate polycyclic aromatic hydrocarbons (PAHs) from water samples, and this method was used as a environmentally friendly method for the determination of PAHs. We demonstrate the uniform dispersion of GO sheets in aqueous samples for the fast high-efficiency adsorption of PAHs. Aggregation occurred immediately upon elimination of electrostatic repulsion by adding NaCl to neutralize the excessive negative charges on the surfaces of the GO sheets. The aggregates of GO and PAHs were separated and treated with hexane to form a slurry. The slurry was filtered and subjected to gas chromatography–mass spectroscopy (GC-MS) analysis. Based on a 40-mL sample volume, limits of detection of 10–30 ng L-1were obtained for 16 PAHs, with correlation coefficients (R2) exceeding 0.99. The method yielded good recovery, ranging from 80 to 111% and 80 to 107% for real spiked water samples at 100 and 500 ng L-1, respectively. Compared to traditional solid-phase extraction and liquid–liquid extraction methods, this method is free of organic reagents in the pretreatment procedure and uses only 1 mL hexane for sample introduction.

Quantitative Determination of Fixed Acids in Wines by Gas-Liquid Chromatographic Separation of Trimethylsilylated Derivatives

1967 ◽  
Vol 50 (2) ◽  
pp. 329-334 ◽  
Author(s):  
Richard L Brunelle ◽  
Robert L Schoeneman ◽  
Glenn E Martin
Keyword(s):  
Quantitative Determination ◽  
Chromatographic Separation ◽  
Simple Method ◽  
Lead Salts ◽  
Liquid Chromatographic Separation ◽  
Glass Column ◽  
Liquid Chromatographic ◽  
Derivatives Of ◽  
Tms Derivatives

Abstract A rapid and simple method was developed for gas-liquid chromatographic (GLC) separation of the trimethylsilylated (TMS) derivatives of the fixed acids present in wine. Acids were precipitated as lead salts to eliminate sugar interference. The TMS derivatives were completely separated on a 6' X 14" o.d. glass column of 3.8% SE-30 on Diatoport S (silanized support) and were measured by reacting the dried lead salts with trimethylchlorosilane and hexamethyldisilazanc in the presence of pyridine. This method permits the simultaneous determination in wine of several acids, such as succinic, malic, tartaric, and citric acids in ca 4 hours. Several other derivatives were observed in the chroniatograms but were not identified

Determination of the amount of aromatic hydrocarbons in petroleum fractions by means of gas-liquid chromatography

1965 ◽  
Vol 1 (7) ◽  
pp. 525-528
Author(s):  
R. I. Sidorov ◽  
A. N. Denisenko ◽  
M. P. Ivanova ◽  
L. A. Polyakova ◽  
I. N. Agapova
Keyword(s):  
Liquid Chromatography ◽  
Aromatic Hydrocarbons ◽  
Gas Liquid Chromatography ◽  
Petroleum Fractions

Determination of Formaldehyde and Other Aldehydes in Industrial Surfactants hy Liquid Chromatographic Separation of Their Respective 2,4-Dinitrophenylhydrazone Derivatives

1988 ◽  
Vol 71 (3) ◽  
pp. 560-563 ◽  
Author(s):  
James R Dahlgran ◽  
Melvin N Jameson
Keyword(s):  
Liquid Chromatography ◽  
Chromatographic Separation ◽  
Direct Injection ◽  
Detection Limits ◽  
Polymeric Materials ◽  
Liquid Chromatograph ◽  
Simple Method ◽  
Liquid Chromatographic Separation ◽  
Liquid Chromatographic

Abstract A rapid and simple method for the determination of formaldehyde, acetaldehyde, and propionaldehyde in surfactants by derivatization with 2,4-dinitrophenylhydrazine (DNPH) has been developed. Samples are prepared in small vials containing a solution of DNPH and acetonitrile. This procedure allows direct injection of an aliquot of the sample into a liquid chromatograph (LC) for analysis. Separation and quantitation of the derivatives can be performed using reversephase liquid chromatography. Detection limits for formaldehyde, acetaldehyde, and propionaldehyde are 0.1, 0.1, and 0.5 pg/g, respectively, for a 1 g sample of the surfactant. The technique has been applied to other ethoxylated and propoxylated polymeric materials with equal success

Synchronous Spectrofluorimetric Determination of Total Amounts of the Six Polycyclic Aromatic Hydrocarbons Officially Designated as Indicators of Drinking Water Quality

1995 ◽  
Vol 78 (2) ◽  
pp. 402-406 ◽  
Author(s):  
Maria J López De Alda-Villaizan ◽  
Soma García-Falcon ◽  
Maria A Lage-Yusty ◽  
Jesús Simal-Lozano
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Surface Waters ◽  
Aromatic Hydrocarbons ◽  
Simple Method ◽  
Quantitation Limit ◽  
Spectrofluorimetric Determination ◽  
Polycyclic Aromatic

Abstract We report a quick, simple method for determination of the joint concentration of the 6 polycyclic aromatic hydrocarbons (PAHs) designated by current legislation as quality indicators for drinking water and for surface waters destined for use as drinking water. Water samples are extracted with hexane, and total indicator PAH concentration is determined by synchronous spectrofluorimetry (optimal instrumental parameters are reported). The detection limit (5.0 ng/L), quantitation limit (8.4 ng/L), precision (coefficient of variation, 3.8%), and accuracy (recovery, 77%) were well within the legal bounds for reference methods.

Sign in / Sign up

Export Citation Format

Share Document