1982
DOI: 10.1016/s0021-9673(01)88394-1
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Linear retention index system for polycyclic aromatic compounds

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Cited by 243 publications
(62 citation statements)
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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%
“…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%
“…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%
“…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%