Comment on 'High-Resolution Gas Chromatography Retention Data as Basis for the Estimation of K{sub}(ow) Values Using PCB Congeners as Secondary Standards'

Jerald L. Schnoor

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Comment on 'High-Resolution Gas Chromatography Retention Data as Basis for the Estimation of K{sub}(ow) Values Using PCB Congeners as Secondary Standards'

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In a recent paper published in this journal, Hackenberg et al. (1) present an approach to determine octanol-water partition coefficients (K{sub}(ow) from capillary gas chromato-graphic (GC) retention data. They claim that this approach is especially useful because it can be applied to substances in the nanogram range and with unknown structure. Based on the Collander equation, they deduce that log K{sub}(ow) can be linearly related to the retention factor k (= t{sub}R/t{sub}M - 1; with T{sub}R being the retention time of the compound and t{sub}M being the dead time in the chromatographic system) obtained from GC measurements: log K{sub}(ow) = a log k + C (1) The regression constants a and C are to be derived from known K{sub}(ow) and GC retention data of secondary standards, in this case polychlorinated biphenyls (PCBs). They suggest that this semi-empirical approach can be extended to estimate the K{sub}(ow) of classes of compounds other than PCBs and that it is useful because normalized GC data are easily available.

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《Environmental Science & Technology: ES&T》 |2004年第7期|2286-2287|共2页
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Jerald L. Schnoor;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种英语
中图分类环境化学;
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1. High-resolution gas chromatography retention data as basis for the estimation of K{sub}(OW) values using PCB congeners as secondary standards [J] . Rudolf Hackenberg, Antonia Schutz, Karlheinz Ballschmiter Environmental Science & Technology: ES&T . 2003,第10期

机译：High-resolution gas chromatography retention data as basis for the estimation of K{sub}(OW) values using PCB congeners as secondary standards
2. High-resolution gas chromatography retention data as a basis for estimation of the octanol-water distribution coefficients (Kow) of PCB: the effect of experimental conditions [J] . Ballschmiter K, Klingler D, Ellinger SHackenberg R Analytical and bioanalytical chemistry . 2005,第8期

机译：High-resolution gas chromatography retention data as a basis for estimation of the octanol-water distribution coefficients (Kow) of PCB: the effect of experimental conditions
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Comment on 'High-Resolution Gas Chromatography Retention Data as Basis for the Estimation of K{sub}(ow) Values Using PCB Congeners as Secondary Standards'

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