Benzene hexachloro

Ground water t/2 = 8640-17520 h, based on essentially no biodegradation observed for hexachloro-benzene in soil die-away tests (Griffin Chou 1981 quoted, Howard et al. 1991). 

Halogenated aromatics (o-chloroanisole hexachloro-benzene) accumulator column 10 56-100... 

Another application, as mentioned earlier in this Chapter and in Chapter 8.1.4, is in the decontamination, mainly from organochlorpesticides, of ginseng. The initial concentrations in the raw materials investigated were in the range of 3.1 to 4.4 ppm for hexachloro-benzene (HCB) and 45 - 64 ppm for quintozen. As both are similar in structure, in addition, another... 

Schecter, A., Furst, P., Furst, C., Meemken, H.A., Groebel, W., Constable, D., 1989a. Levels of polychlorinated dibenzofurans, dibenzodioxins, PCBs, DDT and DDE, hexachloro-benzene, dieldrin, hexachlorocyclohexanes and oxychlordane in human breast milk from the United States, Thailand, Vietnam, and Germany. Chemosphere 18, 445-454. 

R. Myers and V. J. Stella, Factors affecting the lymphatic transport of penclomedine (NSC-338720), a lipophilic cytotoxic drug comparison to DDT and hexachloro-benzene. Int. J. Pharm. 80 51-62 (1992). 

Sackmauereva et al. [520] have described the method for the determination of chlorinated insecticides (BHC isomers, DDE, DDT and hexachloro benzene) in potable waters. 

Beck, J., Hansen, K.E. (1974) The degradation of quintozene, pentachlorobenzene, hexachloro-benzene and pentachloroaniline in soil. Pest. Sci. 5, 41 -8. 

Fig. 9. Relationship between the steady-state bioconcentration factors on a lipid basis (BCFl) of chemicals in different fish species and the n-octanol/water partition coefficient (Kqw) (log/log scale). ( ) Solid circles are chemicals with known endocrine-disrupting properties. Abbreviations of the chemicals p,p -DDT 2,2-bis-(p-chlorophenyl)-l,l,l-trichloroethane. OCDD octachlorodibenzo-p-dioxin. TCDD tetrachlorodibenzo-p-dioxin. HCB hexachloro-benzene. PCA pentachloroanisole. PeCB pentachlorobenzene. MX musk xylene. TeCB tetrachlorobenzene. NP nonylphenol. TCB tetrachlorobenzene. y-HCH y-hexachlorocyclo-hexane (Lindane). PCP pentachlorophenol. DCB dichlorobenzene. BPA bisphenol-A. PCBs polychlorinated biphenyls...

Griffin RA, Chou SFJ (1981) Attenuation of polybrominated biphenyls and hexachloro-benzene by earth materials. Washington, DC. US Environmental Protection Agency (EPA-600/2-81-186)... 

PENTANETHIOL HEXACHLORO-BENZENE HEXAFLUORO-BENZENE O-DICHLORO-BENZENE M-DICHLORO-BENZENE P-DICHLORO-BENZENE M-DIFLUORO-BENZENE O-DIFLUORO-BENZENE P-DIFLUORO-BENZENE BROMOBENZENE CHLOROBENZENE FLUOROBENZENE lODOBENZENE BENZENE PHENOL BENZENETHIOL... 

K. Ballschmiter, R. Wittlinger, Interhemisphere exchange of hexachlorocyclohexanes, hexachloro-benzene, polychlorobiphenyls and l,l,l-trichloro-2,2-bis (/>-chlorophenyl)ethane in the lower troposphere, Environ. Sci. Technol, 25 (1991), 1103-111. 

Polyhalogenated aromatic hydrocarbons TCDD (2,3,7,8-tetrachlorodibenzo p dioxin), PBB (polybromated biphenyls), PCDF (polychlorinated dibenzofuran), PCBs (polychlorinated biphenyls), hexachloro benzene, 2,4- dichlorophenol Appears to correlate with carcinogenic effect. Case studies for PCB and organochlorine pesticides resulted infections associated with immunosuppression... 

Lane DA, Johnson MJJ, Hanley WH. (1992). Gas- and particle-phase concentrations of alpha-hexachlorocyclohexane, gamma-hexachlorocyclohexane, and hexachloro-benzene in Ontario air. Environmental Science Technology 26 126-133. 

For more or less all non-genotoxic carcinogens, a threshold limit value exists where there is no real risk of cancer. Taking this into account, some scientific associations have defined additional categories of carcinogenic substances which have no real carcinogenic potential below their occupational exposure limit. Well-known examples of such substances include sulfuric acid aerosols, hexachloro-benzene, trichloromethane, tetrachloromethane, lindane, dioxane, and 2,3,7,8-tet-rachlorodibenzodioxin (TCDD). 

Litz [100] assessed the ecotoxicity of 44 organic contaminants in biosolids and provided an overview of the compounds found to be of primary relevance (Table 7). Toluene, 1,4-dichlorobenzene, 1,2,4-trichlorobenzene, hexachloro-benzene, 1,1,1-trichloroethene, tetrachloroethene, DDT (incl. DDE, DDD), lindane, 2,4-dichlorophenol, pentachlorophenol, Ugilec, bromophosethyl, silicones, and phenols were proposed as substances of secondary relevance. Litz [100] stated a need for additional information for the following substances clofibrin acid, chloroparaffins, EDTA, musk xylene, tris-(chloroethyl) phosphate, deca-, penta- and octabromodiphenyl ethers, 2,4,6-trichlorophenol, 2,4-dimethyl phenol, ethynyl estradiol, polyacrylic acid sodium salt, polyacrylamides (cationic), and DNBP (di-n-butyl phthalate). 

LPME proved to be an extremely simple, low cost, and virtually solvent-free sample-preparation technique, which provides a high degree of selectivity and enrichment by additionally eliminating the possibility of carryover between runs [219-225]. LPME overcomes the drawback of the droplet fall. An alternative LPME was performed in a hollow fiber of 2 cm, which is sealed and immersed in the sample to extract the analytes. With this approach, higher enrichment factors are obtained for penta- and hexachloro-benzene and can be used for slurry, real environmental, and biological samples [226]. 

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