Isomer-specific determination of polychlorinated dibenzofurans in Japanese and American polychlorinated biphenyls

Wakimoto, Tadaaki; Kannan, Narayanan; Ono, Mitsuhiro; Tatsukawa, Ryo; Masuda, Yoshito

doi:10.1016/0045-6535(88)90254-8

Cited by 95 publications

(45 citation statements)

References 19 publications

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“…This may be due to the reduction in PCDF concentrations, particularly those sources that release more chlorinated PCDF congeners. Greater concentrations of PCDFs relative to PCDDs have been found in sources originat- ing from PCBs (Wakimoto et al 1988;Giesy and Kannan 1998) and chlor-alkali plants ). These sources contain predominantly PCDFs.…”

Section: Pcdd and Pcdf Homolog Compositionmentioning

confidence: 99%

Polychlorinated Dibenzo-p-Dioxins (PCDDs) and Dibenzofurans (PCDFs) in Muscle and Eggs of Salmonid Fishes from the Great Lakes

Giesy

Kannan

Kubitz

et al. 1999

Arch. Environ. Contam. Toxicol.

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Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) were measured in dorsal muscle and eggs of coho salmon, lake trout, and chinook salmon collected from Lakes Superior, Michigan, and Huron (Michigan waters). Absolute and relative concentrations of PCDDs and PCDFs varied among sampling locations (inter- and intralake) and fish species. Fish collected from Bay City (Saginaw Bay) contained the greatest concentrations of PCDDs and PCDFs both in muscle and eggs. Among the three fish species, chinook salmon accumulated greater concentrations than did coho salmon or lake trout. Concentrations of PCDFs were greater than those of PCDDs in all fishes. OCDF and TCDF were the predominant congeners of PCDF, whereas OCDD and TCDD concentrations predominated in PCDDs. Homolog compositions of PCDDs and PCDFs suggested the existence of multiple local sources in various locations. Concentrations of PCDDs and PCDFs in eggs of fishes were significantly correlated with those in muscle.

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Section: Pcdd and Pcdf Homolog Compositionmentioning

confidence: 99%

Polychlorinated Dibenzo-p-Dioxins (PCDDs) and Dibenzofurans (PCDFs) in Muscle and Eggs of Salmonid Fishes from the Great Lakes

Giesy

Kannan

Kubitz

et al. 1999

Arch. Environ. Contam. Toxicol.

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“…In more recent papers tetra-to octaCDF content of several Aroclor and Kanechlor mixtures was between 0.598 and 26 µg/g. [32] In another study tetra-to octaCDF Table 6: Concentration (µg/g) and TCDD TEQs (ng/g) of CDFs in Clophen A60.…”

Section: Chlorodibenzofuransmentioning

confidence: 99%

Clophen A60 Composition and Content of CBs, CNs, CDFs, and CDDs after 2D-HPLC, HRGC/LRMS, and HRGC/HRMS Separation and Quantification

Taniyasu¹,

Falandysz²,

Swietojańska³

et al. 2005

Journal of Environmental Science and Health, Part A

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Chlorobiphenyl (CB) and by-side chlorodibenzofuran (CDF), chlorodibenzo-p-dioxin (CDD), and chloronaphthalene (CN) homologue group and congener composition, and concentrations have been examined in technical CBs mixture Clophen A60. 101 peaks representing 116 CB congeners were quantified in Clophen A60, and most contributing were CBs nos. 138, 153,134/144/149, and 180 with 15.4, 12.3,8.2, and 6.5%, respectively. Di-, tri-, tetra-, penta-, hexa-, hepta-, and octa-CBs constituted, respectively, 0.03, 0.03, 0.32, 9.9, 52.7, and 4.9% of chlorobiphenyls content of the Clophen A60, while mono-, nona-, and decaCB were not quantified. Tetra- to octaCDDs were absent in Clophen A60 at concentration above the method limit of quantification of <0.01 microg/g, while the total CDFs and CNs were found at 12 and 42 microg/g, respectively. Tetra-, penta-, hexa-, and hepta-CDF with 27, 46, 19, and 7% contribution, respectively, dominated in homologue group profile of CDFs, while octa-CDF was absent in Clophen A60. In compositional profile of CDF congeners the most abundant were 1,2,4,7,8-PeCDF, 2,3,4,7,8-PeCDF, and 1,2,3,4,7,8-HxCDF and each had >5% contribution. Amongst the CN homologue groups the profile in descending order followed by hepta-, hexa-, octa-, and penta-CNs with 56, 26, 16, and 2%, respectively. In compositional profile of CNs the most abundant were the congeners such as 1,2,3,4,5,6,7-HpCN (no. 73), 1,2,3,4,6,7-/1,2,3,5,6,7-HxCN (nos. 66/67), and 1,2,3,4,5,6,7,8-OcCN (no. 75) with 55, 21, and 16%, respectively. In terms of dioxin-like toxicity of Clophen A60 the contribution from planar non-ortho and mono-ortho CBs, CDFs, and CNs was 5280, 594.5, and 33.1 ng TCDD TEQ/g, respectively, and the total TEQ of planar analogues was 5908 ng/g.

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“…29,30 Commercial PCB products have previously been used as heat carriers, dielectric oils, plasticizers and so on, and they also contain dioxins. 31,32 In our previous study, indicative congeners for the above-mentioned four major dioxin sources were identified and an estimation method of the WHO-1998 TEQs originated from each source was proposed by using only the concentrations of four indicative congeners. 33 The sum of the TEQ derived from each source estimated by applying the estimation method to various environmental samples in Japan was in good agreement with the actual TEQ; moreover, the method was proved to satisfactorily estimate the TEQ contributions of the four sources.…”

Section: Introductionmentioning

confidence: 99%

A Simplified Determination Method of Dioxin Toxic Equivalent (TEQ) by Single GC/MS Measurement of Five Indicative Congeners

et al. 2011

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Isomer-specific determination of polychlorinated dibenzofurans in Japanese and American polychlorinated biphenyls

Cited by 95 publications

References 19 publications

Polychlorinated Dibenzo-p-Dioxins (PCDDs) and Dibenzofurans (PCDFs) in Muscle and Eggs of Salmonid Fishes from the Great Lakes

Polychlorinated Dibenzo-p-Dioxins (PCDDs) and Dibenzofurans (PCDFs) in Muscle and Eggs of Salmonid Fishes from the Great Lakes

Clophen A60 Composition and Content of CBs, CNs, CDFs, and CDDs after 2D-HPLC, HRGC/LRMS, and HRGC/HRMS Separation and Quantification

A Simplified Determination Method of Dioxin Toxic Equivalent (TEQ) by Single GC/MS Measurement of Five Indicative Congeners

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