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
(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.
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
(PGDDs), poly-chlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) are unintended by-products of certain chemical processes involving chlorine and incineration processes.