Gas chromatographic retention characteristics of phenols with Superox-20M

White, Curt M.; Li, Norman C.

doi:10.1021/ac00246a024

Cited by 19 publications

(5 citation statements)

References 31 publications

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“…The peaks were identified by using the 32 767 compound NBS mass spectral library. Tentative identifications were assigned based on the results of the library search in conjunction with relative retention times determined for phenolic and nitrogen compounds on polar columns (20,21). pounds identified for the peaks in Figure 4 along with the quantitation results.…”

Section: Resultsmentioning

confidence: 99%

Mass spectral characterization of petroleum dyes, tracers, and additives

Youngless¹,

Swansiger²,

Danner³

et al. 1985

Anal. Chem.

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Section: Resultsmentioning

confidence: 99%

Mass spectral characterization of petroleum dyes, tracers, and additives

Youngless¹,

Swansiger²,

Danner³

et al. 1985

Anal. Chem.

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“…For example, a listing of the complete carbon number and Z-series distributions for the 200-425" C neutral-aromatic fractions, the simplest fraction discussed here, required 15 pages in another report (133). Expansion of that presentation to include a breakdown of multiple structural types and classes possible for each homolog would have lengthened it significantly.…”

Section: Discussionmentioning

confidence: 99%

“…Fractions boiling below 550" C were subsequently analyzed by mass spectroscopy (MS) . This chapter discusses the saturatelneutral-aromatic separation and presents a summary of the MS findings, which are discussed in detail elsewhere (132,133). --In addit-ion, Saturate fractions from a1 1 boi 1 ing ranges were analyzed by NMR techniques (134).…”

Section: Separation Of Neutrals Into Saturates and Neutral-aromaticsmentioning

confidence: 99%

“…However, a more typical application is determination of preselected components which .constitute a minor portion of the overall sample. The GC characteristics of alkylphenols and some higher ArOH have been determined on several types of GC columns (124)(125)(126)(127)(128)(129)(130)(131)(132)(133). Virtually all the columns investigated contained highly specialized liquid phase coatings designed to minimize peak asymmetry and provide maximum resolution of isomers.…”

Section: T a T I V E I N T E R P R E T A T I O N O F T H A T I R R E mentioning

confidence: 99%

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Analysis of heavy oils: Method development and application to Cerro Negro heavy petroleum

Carbognani¹,

Hazos²,

Sánchez³

et al. 1989

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“…Gas chromatographic analyses (GC) were completed on a Hewlett-Packard model 5840A chromatograph equipped with a flame ionization detector and fitted with an Alpine West 30-m x 0.20-mni silica capillary coated with a 0.1-pm film of Superox 20M. Operating conditions, retention indices, and behavior ofmonohydric phenols on the Superox column are described in detail in the literature [7].…”

Section: Methodsmentioning

confidence: 99%

Fate of contaminants during treatment of H‐coal process wastewaters

et al. 1985

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and a culture adapted to leachate. The build-up of butyrate indicates a breakdown of other, larger organic species in the leachate. This was not observed when a similar experiment was performed using a culture selected for volatile fatty acid degradation. Apparently, the organisms responsible for the formation of butyrate from higher compounds are not present in this culture.Inhibition of methane occurs when the leachate adapted culture is dosed with leachate, presumably because of sulfate reducers. This problem could be eliminated by removing the sulfuric acid step from the pretreatment scheme or selecting a culture from a seed that does not contain sulfate reducers. The rate controlling step is probably acetate removal, hence the formation of methane. This is typical of anaerobic digestion systems [ I ] . Current research is using higher concentrations of leachate to study the effects on the microbial population. The degradation of other compounds in the leachate is being studied also.The ultimate fate of the components present in the process wastewaters produced by coal liquefaction and gasification facilities is of interest to those developing effective treatment strategies. Conversion processes generate wastewaters containing relatively high concentrations of phenol, ammonia, cyanide, and hydrogen sulfide, as well as other organic and inorganic compounds [ I ] . These components are not unique to coal conversion process Reference i n this report to a n y specific commercial product. process, or aervice IS to facilitate understanding and doel not necessarily imply Its endorsement or favoring b y the United States Departnrent of Energy. 26February , 1985 wastewaters and are also found in various combinations in wastewaters of the petroleum, steel, and chemical process industries, among others. The bulk of the contaminants must be removed from the wastewater prior to reuse or discharge to the environment. aper reports the results of a treatability study of H-Coal Yiquefaction process wastewater. Previous investigations have demonstrated the applicability of conventional treatment technology in controlling the wastewater from gasification and li uefaction pilot plants [2, 3, 41. It can be concluded from &es, earlier studies that no single treatment operation is capable of reducing all of the This

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Gas chromatographic retention characteristics of phenols with Superox-20M

Abstract: The phenolic fraction of a SRC-II middle distillate was Isolated and the Individual phenolic constituents further separated and Identified by using gas chromatography and combined gas

Cited by 19 publications

References 31 publications

Mass spectral characterization of petroleum dyes, tracers, and additives

Mass spectral characterization of petroleum dyes, tracers, and additives

Analysis of heavy oils: Method development and application to Cerro Negro heavy petroleum

Fate of contaminants during treatment of H‐coal process wastewaters

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