Congener specific determination of compounds of technical toxaphene (CTTs) in different antarctic seal species

Vetter, Walter; Krock, Bernd; Luckas, Bernd

doi:10.1007/bf02466518

Cited by 47 publications

(52 citation statements)

References 34 publications

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“…Recently, congener specific quantitation of CTT residues was possible after synthesis and isolation of more than 20 single CTTs [11][12][13]. In different seal species we identified eleven persistent CTTs by GC-ECNI-MS [14]. Six of the eleven persistent CTTs could be assigned to their structure by injection of single CTT standards [14].…”

Section: Introductionmentioning

confidence: 99%

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Enantiomeric resolution of persistent compounds of technical toxaphene (CTTs) on t-butyldimethylsilylated β-cyclodextrin phases

et al. 1997

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Section: Introductionmentioning

confidence: 99%

“…In different seal species we identified eleven persistent CTTs by GC-ECNI-MS [14]. Six of the eleven persistent CTTs could be assigned to their structure by injection of single CTT standards [14].…”

Section: Introductionmentioning

confidence: 99%

Enantiomeric resolution of persistent compounds of technical toxaphene (CTTs) on t-butyldimethylsilylated β-cyclodextrin phases

et al. 1997

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“…Both B[12012]-(202) and B[12012]-(212) are frequently reported as being dominant peaks in biota samples [2,8,23,24] and also in human tissue [25,26]. In this study both congeners were detected in the hake and dolphin samples and their ER was near Table 3.…”

Section: B[12012]-(202) and B[12012]-(212)mentioning

confidence: 45%

“…4). This congener was reported to be present in very low concentrations in seal samples while its presence was more prominent in fish samples [24,28]. An earlier study [8] more or less the same in the technical mixture.…”

Section: B[30030]-(122)mentioning

confidence: 81%

Determination of Enantiomer Ratios of Bornane Congeners in Biological Samples Using Heart-Cut Multidimensional Gas Chromatography

Geus

Baycan-Keller

Oehme

et al. 1998

J. High Resol. Chromatogr.

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“…Eight of the nine CTTs under investigation are abundant in environmental samples [13,21]; B7-515 (Parlar 32) is an unstable but highly toxic contaminant [22]. The enantiomers of B7-1453 and B8-1412 were also separated on [3-TBDM [13,14].…”

Section: B7-515mentioning

confidence: 99%

Enantioseparation of the compounds of technical toxaphene (CTTs) on 35% heptakis (6-O-tert-butyldimethylsilyl-2,3-di-O-Methyl)-β-cyclodextrin in OV1701

et al. 1998

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SummaryThe separation of the enantiomers of the compounds of technical toxaphene (CTTs) on heptakis(6-O-tertbutyldimethylsilyl-2,3-di-O-methyl)-13-cyclodextrin (13-TBDM) has been studied by gas chromatography with electron-capture detection (GC-ECD). Enantiomers of eight of the nine CTTs under investigation were separated on this chiral stationary phase. Separations of the enantiomers of CTTs have hitherto been achieved on tert-butyldimethylsilylated ~-cyclodextrin (I3-BSCD).The chiral resolution values and separation factors of the CTTs on 13-TBDM have been compared with those obtained on 13-BSCD. Although several components coeluted, enantioselective determination of three CTTs was possible in an extract of seal blubber. For each CTT the first-eluting enantiomer was enantioenriched. Enantioselective accumulation of 2-endo,3-exo,5-endo,6-exo,8,8,9,10-octa-chlorobornane (B8-1412) in biota has been established for the first time.bornanes [2] most of which are chiral [3]. Because of the different behavior of enantiomers in a chiral environment, enantioselective analysis currently plays an important role in environmental chemistry [4J. First reports of the separation of CTT enantiomers were published in 1994 [5,6]; so far resolution of the enantiomers of CTTs has been achieved on tert-butyldimethylsilylated 13-cyclodextrin (13-BSCD) only [4,7]. Chiral stationary phases (CSPs) based on ~-BSCD were introduced by Blum and Aichholz [8]. On this CSP enantioseparation of seven persistent CTTs was achieved in one GC run [7]. The enantiomers of some CTTs could not, however, be separated on 13-BSCD and the lack of a confirmatory CSP for the enantioselective analysis of CTTs in environmental samples was regrettable.

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Congener specific determination of compounds of technical toxaphene (CTTs) in different antarctic seal species

Cited by 47 publications

References 34 publications

Enantiomeric resolution of persistent compounds of technical toxaphene (CTTs) on t-butyldimethylsilylated β-cyclodextrin phases

Enantiomeric resolution of persistent compounds of technical toxaphene (CTTs) on t-butyldimethylsilylated β-cyclodextrin phases

Determination of Enantiomer Ratios of Bornane Congeners in Biological Samples Using Heart-Cut Multidimensional Gas Chromatography

Enantioseparation of the compounds of technical toxaphene (CTTs) on 35% heptakis (6-O-tert-butyldimethylsilyl-2,3-di-O-Methyl)-β-cyclodextrin in OV1701

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