dioxin

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dioxin

 [di-ok´sin]
a highly toxic and teratogenic chlorinated hydrocarbon that is a trace contaminant in the herbicides2,4,5-T and agent orange.

di·ox·in

(dī-oks'in),
1. A ring consisting of two oxygen atoms, four CH groups, and two double bonds; the positions of the oxygen atoms are specified by prefixes, as in 1,4-dioxin.
2. Abbreviation for dibenzo[b,e][1,4]dioxin which may be visualized as an anhydride of two molecules of 1,2-benzenediol (pyrocatechol), thus forming two oxygen bridges between two benzene moieties, or as a 1,4-dioxin with a benzene ring fused to catch each of the two CH=CH groups.
3. A contaminant in the herbicide, 2,4,5-T; it is potentially toxic, teratogenic, and carcinogenic.

dioxin

/di·ox·in/ (-ok´sin) any of the heterocyclic hydrocarbons present as trace contaminants in herbicides; many are oncogenic and teratogenic.

dioxin

(dī-ŏk′sĭn)
n.
Any of several carcinogenic, mutagenic, and teratogenic polychlorinated heterocyclic aromatic hydrocarbons that can occur as impurities in petroleum-derived herbicides and as byproducts of manufacturing chemicals and burning fuels and waste.

dioxin

[dī·ok′sin]
a contaminant of the herbicide 2,4,5-trichlorophenoxyacetic acid, widely used throughout the world in forestry, on grassland, against woody shrubs and trees on industrial sites, and for rice and sugarcane weed control. Because of its toxicity it is no longer manufactured in the United States. Exposure to dioxin is associated with chloracne and porphyria cutanea tarda. Dioxin was a contaminant of the jungle defoliant Agent Orange sprayed by the U.S. military aircraft over areas of Southeast Asia from 1965 to 1970. Also called 2,3,7,8-tetrachlorodibenzo-para-dioxin.
Any of a family of highly toxic chlorinated hydrocarbons in which 2 benzene rings are linked by 2 O2 atoms, which includes dibenzodioxins and dibenzofurans
Lab Increased PT, increased lipid levels

dioxin

Toxicology Any of a family of highly toxic chlorinated hydrocarbons Clinical In humans, intense chronic exposure causes weight loss, myalgias, insomnia, dyspnea, cold intolerance, irritability, peripheral neuropathy, hepatomegaly, hemorrhagic cystitis, chloracne, actinic elastosis, loss of libido, impotence Lab ↑ PT, ↑ lipid levels. See Agent Orange, Times Beach.

di·ox·in

(dī-ok'sin, dī-ok'sin)
1. A ring consisting of two oxygen atoms, four CH groups, and two double bonds; the positions of the oxygen atoms are specified by prefixes, as in 1,4-dioxin.
2. A contaminant in the herbicide, 2,4,5-T; its potential toxicity, carcinogenicity, and teratogenicity are controversial.

dioxin

a chemical byproduct of the manufacture of certain herbicides and bactericides, particularly tetrachlorodibenzo-paradioxin (TCDD), which is extremely toxic.

Dioxin

A toxic chemical found in weed killers that has been linked to the development of endometriosis.
Mentioned in: Endometriosis

dioxin

a highly toxic and teratogenic chlorinated hydrocarbon that is a trace contaminant in the herbicide 2,4,5-T. Acute poisoning causes vomiting, abortion, anestrus. Chronic poisoning causes liver damage, especially in dogs. Congenital defects caused include cranio-facial deformity and anasarca. It is excreted in the milk.
References in periodicals archive ?
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.
The company says that it produces no polybrominated dibenzodioxins or dibenzofurans (below ppb levels of detection) either by itself or when compounded into HIPS.
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.
Polychlorinated dibenzodioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are unintended by-products of certain chemical processes involving chlorine and incineration processes [Agency for Toxic Substances and Disease Registry (ATSDR) 1994, 1998].
The authors concluded that PBDEs, being non-coplanar organohalogens, are very poor AhR inducers and that most of previously reported AhR-inducing properties of PBDE mixtures can be explained by the presence of polybrominated dibenzofurans (PBDF) and polybrominated dibenzodioxins (PBDD) in the mixtures.
KEY WORDS: children, diet, environment, epidemiology, polychlorinated biphenyls, polychlorinated dibenzodioxins, polychlorinated dibenzofurans.
The determination of chlorinated biphenyls, chlorinated dibenzodioxins, and chlorinated dibenzofurans by GC-MS.