dioxin

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dioxin

[dī′äk·sən]
(organic chemistry)
A member of a family of highly toxic chlorinated aromatic hydrocarbons; found in a number of chemical products as lipophilic contaminants. Also known as polychlorinated dibenzo-para-dioxin.
References in periodicals archive ?
Contaminants: Chloropropanols; Polychlorinated dibenzodioxins, polychlorinated dibenzofurans and coplanar polychlorinated biphenyls.
When introduced to the GC/MS with a SPI injector, highly active compounds such as phenols and triazines (solvent focus), low volatile substances such as 6-ring polyaromatic hydrocarbons, high molecular weight fatty acid methyl esters and PCBs and polychlorinated dibenzodioxins (solute focus) and thermally labile materials such as carbamates and nitroaromatics (solvent focus) exhibit excellent chromatography and spectrometry.
Saytex BT-93, in a comparable 82 wt% bromine matrix, produces no detectable brominated dibenzodioxins and little, if any, 2,3,7,8-substituted brominated dibenzofurans on pyrolysis.
In: Halogenated Biphenyls, Terphenyls, Naphthalenes, Dibenzodioxins and Related Products (Kimbrough RD, Jensen AA, eds).
According to Ferro, test evaluations indicate that at detection levels of less than one part per billion, the product produces no polybrominated dibenzodioxins and dibenzofurans.
Polychlorinated dibenzodioxins (PCDDs), dibenzofurans (PCDFs), and biphenyls (PCBs) constitute a group of widespread and persistent organic pollutants with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD, dioxin) being the most toxic member of this group (Birnbaum 1994b, 1995a, 1995b).
05); the sum of polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and DL-PCBs (OR=1.
Polychlorinated dibenzodioxins and dibenzofurans in butter from different states in Australia.
Persistent organic chemicals such as polychlorinated biphenyls (PCBs) and chlorinated dibenzodioxins and dibenzofurans may cause human health effects as a result of exposure that occurred years before effects manifest (Colin et al.
Relevance of BFRs and thermal conditions on the formation pathways of brominated and brominated-chlorinated dibenzodioxins and dibenzofurans.
Polychlorinated dibenzodioxins (PGDDs), poly-chlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) are unintended by-products of certain chemical processes involving chlorine and incineration processes.