Integrated supercritical fluid extraction, bioassay and chemical screening methods for analyzing vapor-phase compounds of an environmental complex mixture: Diesel exhaust

Kado, Norman Y.; Okamoto, Robert A.; Kuzmicky, Paul A.; Rathbun, C.; Hsieh, Dennis P. H.

doi:10.1016/0045-6535(96)00200-7

Cited by 17 publications

(8 citation statements)

References 7 publications

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“…These extracts include PAH and many oxygenated PAH. Several of these compounds are found distributed between both the gaseous and particulate phases [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Sampling and Analysis of Polycyclic Aromatic Hydrocarbons (PAH) and Oxygenated PAH in Diesel Exhaust and Ambient Air

Leotz-Gartziandia

Tatry

Carlier

2000

Polycyclic Aromatic Compounds

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Abstract. Polycyclic Aromatic Hydrocarbons (PAH) and their oxygenated derivatives occur in particles or in the vapour phase in the atmosphere. Some of these compounds, particularly the PAH, are known as strong carcinogens and/or mutagens. Emissions from diesel engines are an important source of these contaminants in urban air. In this work, the chemical composition of diesel particles was studied from two different perspectives: the gaz/particule partitioning and the different size fractions of these compounds. A dilution tunnel, with a diesel car connected, was built for the purpose of this study. Measurements were carried out near a motorway in Paris for comparison to the tunnel test results. The results show, firstly, that the gaseous phase of the PAH is predominant (up to 20 times) with respect to the particulate phase, and that the PAH and their derivatives are mainly adsorbed in the very fine particulate fraction (for particle size under 0.4 urn). Secondly, the oxygenated PAH, neglected in the majority of previous studies, are predominant with respect to the PAH.

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“…These extracts include PAH and many oxygenated PAH. Several of these compounds are found distributed between both the gaseous and particulate phases [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Sampling and Analysis of Polycyclic Aromatic Hydrocarbons (PAH) and Oxygenated PAH in Diesel Exhaust and Ambient Air

Leotz-Gartziandia

Tatry

Carlier

2000

Polycyclic Aromatic Compounds

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“…Most of the papers published have studied spiked samples. Only a few published reports have investigated the authentic samples [67].…”

Section: Sfe In Food and Pharmaceutical Analysismentioning

confidence: 99%

Super-Critical Fluid: An Overview on Analytical Applications

Kadri

Xavier

Patel

et al. 2021

CGC

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Abstract:: Super Critical Fluid is the emerging technique that consists of super solvent, which is considered a boon over many other conventional solvents. The main component utilized in it is Carbon Dioxide [CO2], which possesses dual state properties such as effusion through solid and other dissolving materials like liquid which results in unique applications bidden with no limitations. The varying temperature and pressure are the important parameters optimized and thus enhance its solvent properties. Higher Co-efficient of diffusion, reduction in time, higher compressibility, etc., is some of the major advantages of SCF-CO2 over the conventional solvents. Over and above, it is a green approach and a super solvent. Here we have discussed the multifarious applications of the SCF-CO2 extraction in fields and areas extended, but not limited to, Food, Environmental, Analysis, Metal-Cation Extraction, as well as Extractions, Forensics, Pharmaceuticals, Toxins, and Botanical Samples.

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“…The solvent extraction technique has many disadvantages, such as, the use of large volumes of toxic organic solvent, wastage of time, and the need for a clean-up process. Most studies reported are on spiked samples, only a few on real sample [22,23]. Supercritical fluids have the same solvent power as liquids but their mass transfer characteristics are better than those of liquid solvents.…”

Section: Originalmentioning

confidence: 99%

Analysis of atmospheric semi-volatile organic pollutants by adsorptiveenrichment and off-line supercritical fluid extraction—Gas chromatography

1999

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Methods have been developed for determination of semivolatile organic pollutants in air. Extraction efficiencies for test compounds are > 83 %, and rsd's are < 3.4 % (n = 3). Atmospheric samples were collected from a variety of sites in Lanzhou, China by an adsorptive enrichment method. Over 50 organic pollutants were extracted by SFE with CO2 modified with methanol. Extracts were subjected to GC and GC-MS analysis. The results showed that one of the most serious polluted regions was an oil refinery, in which total concentration of pollutants amounted to 285.75 #g.m -3. The relationships between the total concentration of pollutants and sampling time and weather were also investigated. Results showed that pollution on sunny days is more serious than that on rainy days, while pollution is most serious during the evening.

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Integrated supercritical fluid extraction, bioassay and chemical screening methods for analyzing vapor-phase compounds of an environmental complex mixture: Diesel exhaust

Cited by 17 publications

References 7 publications

Sampling and Analysis of Polycyclic Aromatic Hydrocarbons (PAH) and Oxygenated PAH in Diesel Exhaust and Ambient Air

Sampling and Analysis of Polycyclic Aromatic Hydrocarbons (PAH) and Oxygenated PAH in Diesel Exhaust and Ambient Air

Super-Critical Fluid: An Overview on Analytical Applications

Analysis of atmospheric semi-volatile organic pollutants by adsorptiveenrichment and off-line supercritical fluid extraction—Gas chromatography

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