Chlorinated-dibenzofurans

Habe H, J-S Chung, J-H Lee, K Kasuga, T Yoshida, H Nojiri, T Omori (2001) Degradation of chlorinated dibenzofurans and dibenzo-/)-dioxins by two types of bacteria having angular dioxygenases with different features. Appl Environ Microbiol 67 3610-3617. 

Farrell TJ. 1980. Glass capillary gas chromatography of chlorinated dibenzofurans, chlorinated anisoles, and brominated biphenyls. J Chromatogr Sci 18 10-17. 

Ballschmiter, K., R. Bacher, A. Mennel, R. Fischer, U. Riehle, and M. Swerev, The determination of chlorinated biphenyls, chlorinated dibenzodioxins, and chlorinated dibenzofurans by GC-MS , J. High Res. Chromatogr., 15,260-270 (1992). 

Quantitative Property-S T) Relationship Dickhut et al. [67] developed a QP-5VV(7 )R based on experimental mole fraction solubilities for alkylbenzenes, PAHs, PCBs, chlorinated dibenzofuranes and p-dioxins, and alkyl- and halo-substituted naphthalenes and p-terphenyls in the range 4 to 40°C ... 

A comprehensive review of the metabolism of PCBs was published in 1976 by Sundstrom et al. (ref. 139a) confirming the importance of degree of substitution and location of halogens on toxicity. The lesser chlorinated biphenyls are more readily metabolized. The presence of at least two adjacent hydrogens—preferably in positions 3. 4, 5 or 3, 4, 5 —is required for the rapid metabolism of PCBs. This requirement is satisfied by all mono-, di- and trichlorobiphenyls, and by the tetrachlorobiphenyls with the exception of the 3. 3. 5. 5 -chlorinated PCB. This compound was reported particularly toxic to monkeys, and the intermediate formation of chlorinated dibenzofuran was postulated to account for this toxicity (ref. 139c). 

Bocio, A., Domingo, J.L., 2005. Daily intake of polychlorinated dibenzo-p-dioxins/poly-chlorinated dibenzofurans (PCDD/PCDFs) in foodstuffs consumed in Tarragona, Spain A review of recent studies (2001-2003) on human PCDD/PCDF exposure through the diet. Environ. Res. 97, 1-9. 

In January and March of 1988, Radian Corporation made a comprehensive series of performance measurements on the air pollution control system at Modesto (47). As shown in Table 12, the measurements included chlorinated dibenzo-p-dioxins (CDD), chlorinated dibenzofurans (CDF), polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenols (PCB), total hydrocarbons (THC), ammonia, NOx, sulfur trioxide, sulfur dioxide, hydrochloric acid, carbon monoxide, and particulate matter. 

Govers, H.A.J., van der Wielen, F.W.M., Olie, K. (1995) Derivation of solubility parameters of chlorinated dibenzofurans and dibenzo[p]dioxins from gas chromatographic retention parameters via SOFA. J. Chmmatogr. A, 715, 267-278. 

Oxidation rate constant k, for gas-phase second order rate constants, kOH for reaction with OH radical, kNG3 with N03 radical and k03 with 03 or as indicated, data at other temperatures see reference k0H = (16-22) x 10-12 cm3 molecule 1 s 1 for a mono-chlorinated dibenzofuran, tropospheric lifetime was calculated to be 0.7-1.0 d using a 12-h average daytime OH radical concn of 1.5 106 molecule cm 3 (Atkinson 1991)... 

Air tropospheric lifetime was calculated for a mono-chlorinated dibenzofuran based on the gas-phase reaction with OH radicals to be 0.7-1.0 d (Atkinson 1991) ... 

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