title: Predicting gas chromatographic retention times of 209 polybrominated diphenyls (PBBs) for different temperature programs.
abstract: A method has been developed to predict the retention times of 209 individual polybrominated diphenyl congeners for different temperature programs. The retention equations lnk'=A+B/T of five PBBs in gas chromatography (GC) were used to evaluate the properties of the regression coefficients A and B, which are widely accepted as being highly reliable chromatographic retentions. The quantitative relationships between the A and B values of PCBs and those of PBBs were found. The regression equations derived have coefficients of determination greater than 0.999. The A, B values of any PBB can be predicted by using the A, B values of the PCB according to these relationships. Using these predicted A and B values, the retention times of all PBBs can be predicted. This is an important advance in the identification of PBBs because at present there are only a few PBB standards available.
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116011, P. R. China.
authors.forename: H X
authors.initials: HX
authors.lastname: Zhao
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.forename: X Y
authors.initials: XY
authors.lastname: Xue
authors.forename: X M
authors.initials: XM
authors.lastname: Liang
authors.forename: A
authors.initials: A
authors.lastname: Kettrup
mesh_terms: D002849:Chromatography, Gas / Q000379:methods* / Q000592:standards*; D004785:Environmental Pollutants / Q000032:analysis*; D011075:Polybrominated Biphenyls / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D011237:Predictive Value of Tests; D013997:Time Factors
chemical_list: D004785:Environmental Pollutants; D011075:Polybrominated Biphenyls; D011078:Polychlorinated Biphenyls