Linear retention index system for polycyclic aromatic compounds

Vassilaros, Daniel L.; Kong, R. C.; Later, Douglas W.; Lee, Milton L.

doi:10.1016/s0021-9673(01)88394-1

Cited by 243 publications

(62 citation statements)

References 19 publications

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“…It is apparent from eq (4), k= f(to), that it is important to measure dead time accurately, so the dead times should be calculated using n-alkanes [ 101 From the expenmental data, C and D in eq (8) Figure 4, from which it is apparent that eq (5) is not correct for some compounds at the lower temperatures The melting points of the different compounds are hsted in Table 1, from which it is clear that eq (5) does not correctly represent the gas chromatographic process when the oven temperature is below the compounds' melting points The hnear least-squares regression should, therefore, be performed for temperatures above the compounds' melting points and the data obtamed under these conditions used to calculate t *~ from eq (14) Table 2 hsts retention indices calculated using thls method for the temperature program depicted in Figure 2(a), values reported by other authors [3] are hsted for companson Table 3 …”

Section: Resultsmentioning

confidence: 99%

System for calculating the linear temperature‐programmed retention indices of polycyclic aromatic compounds

Chu

1994

J. High Resol. Chromatogr.

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SummaryTheoretical procedures have been used to predict linear temperature-programmed retention indices for polycyclic aromatic compounds. It is possible to calculate such indices for polycyclic aromatic compounds in some practical situations in which the compounds cannot be eluted during a simple linear temperature program. The theory has been tested for a number of polycyclic aromatic hydrocarbon (PAHs) in single-and multi-plateau temperature-programmed gas chromatography with SE-52 as the stationary phase. This method will extend the applicability of linear retention indices for the identification of the isomers of polycyclic aromatic compounds.

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Section: Resultsmentioning

confidence: 99%

System for calculating the linear temperature‐programmed retention indices of polycyclic aromatic compounds

Chu

1994

J. High Resol. Chromatogr.

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“…Vassilaros et al, 1982;Rostad and Pereira, 1986;Ballschmitter et al;1987, Bundt et al, 1991Paschke et al, 1992;Peters and Moldowan, 1993;Wang et al, 1994). For correction of injection time inaccuracies the retention times of the internal standard compounds were used.…”

Section: Identification Of Organic Compoundsmentioning

confidence: 99%

Organic Contaminants in Riverine and Groundwater Systems

2006

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“…Such variations in Ri can be caused by differences in initial oven temperature and isothermal period and temperature programming rate [26]. It is also known that Ri reproducibility for aromatics is lowest when compared to aliphatic and cyclic aliphatics [27].…”

Section: Retention Indicesmentioning

confidence: 99%

“…Pressure drop in the column has been invoked as explanation [27]. As mentioned in reference [26], published Ri values should be viewed rather as information on elution order and intervals; the actual numbers should not be expected to be absolute. For 50% phenyl content stationary phase, Schubert et al [6] indicate a Ri value of 540.1 for DB[ah]P (considered as index marker with z = 6 in this study).…”

Section: Retention Indicesmentioning

confidence: 99%

Approaches to identifying and quantifying polycyclic aromatic hydrocarbons of molecular weight 302 in diesel particulates

Sauvain¹,

Duc

2004

J of Separation Science

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Among the PAH class of compounds, high molecular weight PAH are now considered as relevant cancer inducers, but not all of them have the same biological activity. However, their analysis is difficult, mainly due to the presence of numerous isomers and due to their low volatility. Retention indices (Ri) for 13 dibenzopyrenes and homologues were determined by high-resolution capillary gas chromatography (GC) with four different stationary phases: a 5% phenyl-substituted methylpolysiloxane column (DB-5 ms), a 35% phenyl-substituted methylpolysiloxane column (BPX-35), a 50% phenyl-substituted methylpolysiloxane column (BPX-50), and a 35% trifluoropropylmethyl polysiloxane stationary phase (Rtx-200). Correlations for retention on each phase were investigated by using 8 independent molecular descriptors. Ri has been shown to be linearly correlated to PAH volume, polarisability alpha, Hückel-pi energy on the four examined columns. Ionisation potential Ip is a fourth variable which improves the regression model for DB-5ms, BPX-35, and BPX-50 column. Correlation coefficients ranging from r2 = 0.935 to r2 = 0.952 are then observed. Application of these indices to the identification and quantification of PAH with MW 302 in certified diesel particulate matter SRM 1650a is presented and discussed.

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Linear retention index system for polycyclic aromatic compounds

Cited by 243 publications

References 19 publications

System for calculating the linear temperature‐programmed retention indices of polycyclic aromatic compounds

System for calculating the linear temperature‐programmed retention indices of polycyclic aromatic compounds

Organic Contaminants in Riverine and Groundwater Systems

Approaches to identifying and quantifying polycyclic aromatic hydrocarbons of molecular weight 302 in diesel particulates

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