Analysis of polynuclear aromatic hydrocarbons in automobile exhaust by supercritical fluid chromatography

Jentoft, R. E.; Gouw, T. H.

doi:10.1021/ac50008a036

Cited by 45 publications

(11 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results obtained with and without the splitter are shown in Figure 12 for SFC direct injection. 69 1 1 E It should also be noted that even though the tetracosane has no appreciable solubility in CO2 at the injection density, there was no precipitation of sample in the loop.…”

Section: Mobile Phasementioning

confidence: 97%

Capillary supercritical fluid chromatography

Fjeldsted¹,

Lee²

1984

Anal. Chem.

115

View full text Add to dashboard Cite

Section: Mobile Phasementioning

confidence: 97%

Capillary supercritical fluid chromatography

Fjeldsted¹,

Lee²

1984

Anal. Chem.

115

View full text Add to dashboard Cite

“…The most used techniques for the analysis of PAHs are gas chromatography [4,5], high-performance liquid chromatography (HPLC) [6,7] and supercritical fluid chromatography [8]. Usually, the concentration of PAHs in environmental samples is very low so extraction and preconcentration steps are frequently necessary.…”

Section: Introductionmentioning

confidence: 99%

Efficient extraction of PAHs in aqueous organised media assisted by focused microwaves

Vallejo-Pecharromán¹,

Ayuso

Castro

2001

Chromatographia

View full text Add to dashboard Cite

Key WardsColumn liquid chromatography Micellar medium Microwave extraction, PAHs in soil SummaryA novel method for the extraction into an aqueous medium of PAHs in soil is described, where sodium dodecyl su Iphate (SDS)is used as micelle former. After optimisation of this step using a multivariate approach, recoveries of the target analytes from spiked soil ranging bel',,veen 98.3% -99.7% were obtained when the samples were subjected to extraction with 25 mL of an aqueous SDS solution (2.9 10 -2 mol L 1) while irradiated with focused microwaves at 240W for 40 min. The overall method involving determination of the extracted compounds consists of three steps: 1) extraction of the analytes into the aqueous micellar medium assisted by focused microwaves; 2) trapping of the analytes on a Cls cartridge for clean up and preconcentration and; 3) HPLC separation with fluorimetric detection. The method was validated using the certified reference material CRM 524 and the results found were in agreement with the certified values.

show abstract

“…About 99 % organics including PAHs, PCBs (Jentoft and Gouw 1976), DDT and toxophene and highly polar compounds have been successfully extracted out. Commercial process to separate oils from refinery sludge and contaminated soil and extraction of heavy metals has been developed.…”

Section: Special Applicationsmentioning

confidence: 99%

Supercritical Fluid Chromatography: A Green Approach for Separation and Purification of Organic and Inorganic Analytes

Datta

Auddy

2013

Green Chromatographic Techniques

View full text Add to dashboard Cite

'Supercritical fluid' describes a gas or liquid at conditions above its critical point. A greater range of solvent properties can be achieved with Supercritical fluid as a single solvent by careful manipulation of temperature and pressure at the supercritical state. Supercritical fluids are attractive media for several chemical reactions having better control over the reaction rates in different areas of biochemistry, polymer chemistry and environmental science. Supercritical fluid extraction (SFE), a rapid, convenient, efficient, and selective method has been used successfully for the separation of analytes prior to supercritical fluid chromatography (SFC), which is a relatively recent chromatographic technique and is commercially available since 1982. SFC significantly reduces the usage of organic solvents and wastes by using supercritical CO 2 as the mobile phase. The important principles of green chemistry that are applicable to green chromatography includes prevention of waste, use of safer solvents and increasing energy efficiency. All these factors are taken care of in SFC which combines some of the best features of HPLC as well as GC. Analytes that cannot be vaporized for analysis by gas chromatography or have no functional groups for detection by the usual liquid chromatography techniques, can be separated and detected using SFC. By now SFC has been applied to wide variety of materials including natural products, pharmaceuticals, foods, pesticides, herbicides, surfactants, polymers and polymer additives, heavy metals, fossils fuels, petroleum, explosives and propellants. SFC has now become an attractive alternative for chiral drug separation.

show abstract

Analysis of polynuclear aromatic hydrocarbons in automobile exhaust by supercritical fluid chromatography

Cited by 45 publications

References 7 publications

Capillary supercritical fluid chromatography

Capillary supercritical fluid chromatography

Efficient extraction of PAHs in aqueous organised media assisted by focused microwaves

Supercritical Fluid Chromatography: A Green Approach for Separation and Purification of Organic and Inorganic Analytes

Contact Info

Product

Resources

About