Enantioselective degradation of α-hexachlorocyclohexane and cyclodiene insecticides in roe-deer liver samples from different regions of Germany

Pfaffenberger, Bernd; Hardt, Ingo H.; Hühnerfuß, Heinrich; König, Wilfried Α.; Rimkus, Gerhard; Glausch, Alexandra; Schurig, Volker; Hahn, Jürgen

doi:10.1016/0045-6535(94)90284-4

Cited by 34 publications

(20 citation statements)

References 19 publications

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“…Hühnerfuss et al mentioned interferences from the sample matrix (analysis with GC/ECD) which were not observed on an achiral column, although an additional clean-up step had been introduced (134). In some cases the determination of ERs in multicomponent mixtures was possible by application of multidimensional gas chromatography (determination of atropisomeric PCBs (116)) or single reaction monitoring experiments in MS/MS (determination of chiral CTTs (135)).…”

Section: Vettermentioning

confidence: 99%

Enantioselective Fate of Chiral Chlorinated Hydrocarbons and Their Metabolites in Environmental Samples

Vetter

2001

Food Reviews International

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Gas chromatographic enantioseparation of chiral organochlorines (α-HCH, cis-and trans-chlordane, heptachlor, heptachlor epoxide, oxychlordane, o, p -DDT, compounds of technical toxaphene, stable atropisomeric PCBs and methylsulfonyl-PCBs) has been achieved during the last decade. For this purpose chiral stationary phases based on cyclodextrin derivatives have been applied in combination with GC/ECD, GC/MS, MDGC, and MS/MS. With these techniques methods have been developed which have been used to study the enantioselective fate of the chiral organochlorines. Changes in the enantioratios and conclusions drawn are reviewed. phenomenon of plane-polarized light (Malus, 1809) and optical rotation (Biot,113

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Section: Vettermentioning

confidence: 99%

Enantioselective Fate of Chiral Chlorinated Hydrocarbons and Their Metabolites in Environmental Samples

Vetter

2001

Food Reviews International

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“…The temperature program which simultanously separated the enantiomers of cis-and transchlordane, oxychlordane, a-HCH, a-PDHCH, p-and y-PCCH partly resolved the heptachlorexopides (see Table 1 and Hardt et al baseline separated standard solutions of heptachlor and cis-heptachlorepoxide on heptakis(2,6-di-O-methyl-3-O-npenty1)-P-cyclodextrin [33]. Recently, the chiral separation of cis-heptachlorepoxide in biota was obtained on the heptakis(2-O-methyl-3,6-di-O-n-pentyl)-~-cyclodextrin by Pfaffenberger et al [34]. Though Pfaffenberger et al.…”

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confidence: 98%

Gas chromatographic separation of chiral organochlorines on modified cyclodextrin phases and results of marine biota samples

Vetter

Klobes

Hummert

et al. 1997

J. High Resol. Chromatogr.

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SummaryFour chiral stationary phases containing modified cyclodextrins diluted in or chemically bonded to a non-chiral phase were used to resolve chiral organochlorine compounds such as a-hexachlorocyclohexane (a-HCH), perdeuterated a-HCH (a-PDHCH), p-and y-pentachlorocyclohexene (PCCH), oxychlordane, cis-and transchlor-dane, cis-and trans-heptachlorepoxide, PCB 95, PCB 132, PCB 149, and chiral toxaphenes. The elution order was determined by analyzing standards with known enantiomeric excesses. Furthermore, an internal standard was used to even out slight variations in the ratio of peak heights of enantiomers which were determined from injection to injection. None of the chiral stationary phases resolved all chiral organochlorine compounds. However, the P-TBDM (35% heptakis (6-0-t- butyldimethylsilyl-2,3-di-0-methyl)-~-cyclodextrin in OV 1701)column allowed the separation of all compounds under investigation except for PCB 95 and chiral toxaphenes. Emphasis was placed on the separation of as many as possible enantiomers on a chiral phase by application of one temperature program and with respect to unambiguous quantitation of biological samples such as blubber and liver of marine and terrestrial mammals.

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“…[12][13][14] HHCB and AHTN are chiral compounds. Enantioselective degradation or selective accumulation has been observed in the case of environmental pollutants such as ␣-HCH, 15,16 chlordane type pesticides, 17 bromocyclen, 18 chlorinated bis(propyl) ethers, 19,20 atropisomeric PCB methyl sulfones, 21 and others. 22 Until now, no information about the stereochemical biotransformation of chiral polycyclic musks in biota is available.…”

mentioning

confidence: 98%

Enantiomeric composition of the polycyclic musks HHCB and AHTN in different aquatic species

et al. 1999

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Enantioselective degradation of α-hexachlorocyclohexane and cyclodiene insecticides in roe-deer liver samples from different regions of Germany

Cited by 34 publications

References 19 publications

Enantioselective Fate of Chiral Chlorinated Hydrocarbons and Their Metabolites in Environmental Samples

Enantioselective Fate of Chiral Chlorinated Hydrocarbons and Their Metabolites in Environmental Samples

Gas chromatographic separation of chiral organochlorines on modified cyclodextrin phases and results of marine biota samples

Enantiomeric composition of the polycyclic musks HHCB and AHTN in different aquatic species

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