EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Preparation of qualitative standard mixtures of poly chlorinated di benzo p dioxins and di benzo furans by uv and gamma irradiation of the octa chloro compounds






Journal of Chromatography 129: 303-308

Preparation of qualitative standard mixtures of poly chlorinated di benzo p dioxins and di benzo furans by uv and gamma irradiation of the octa chloro compounds

High-resolution gas chromatography using an OV-17 glass capillary column and mass spectrometry were used to analyze UV- and .gamma.-irradiated octachlorodibenzo-p-dioxin and octachlorodibenzofuran. Under the conditions investigated, dechlorination of these compounds to lower chlorinated dibenzo-p-dioxins and dibenzofurans appears to be the major reaction pathway. The resulting mixtures of penta-, hexa- and heptachloro compounds can be used as easily and safely prepared qualitative reference samples to determine gas chromatographic, mass spectrometric and other properties of individual components for which pure standards are not available. [Polychlorinated dibenzo-p-dioxins and dibenzofurans, some of which are highly toxic, are contaminants of widely used chlorinated phenols; highly sensitive and specific analytical techniques are required to ensure that these contaminants are not present at intolerable concentration levels.].


Accession: 006173754



Related references

Anonymous, 1982: Mechanistic aspects of the thermal formation of halogenated organic compounds including poly chlorinated di benzo p dioxins 2 thermochemical generation and destruction of di benzo furans and di benzo p dioxins

Anonymous, 1983: Poly chlorinated di benzo p dioxins and poly chlorinated di benzo furans in emissions from an urban incinerator 2 correlation between concentration of micro pollutants and combustion conditions

Cavallaro A.; Bandi G.; Invernizzi G.; Luciani L.; Mongini E.; Gorni A., 1980: Sampling occurrence and evaluation of poly chlorinated di benzo p dioxins and poly chlorinated di benzo furans from incinerated solid urban waste. The sampling procedure of solid and gaseous pollutants from flue gas emitted into the atmosphere by solid waste incinerating furnaces was investigated. Because of their toxicological properties, polychlorinated dibenzo-p-dioxins (PCDD) and dibenzo...

Gizzi, F.; Reginato, R.; Benfenati, E.; Fanelli, R., 1982: Poly chlorinated di benzo p dioxins and poly chlorinated di benzo furans in emissions from an urban incinerator 1. average and peak values. Gas chromatography-low resolution mass spectrometry was used to quantitate PCDD [polychlorinated dibenzo-p-dioxin] and PCDF [polychlorinated dibenzofuran] emitted from an urban incinerator. The amounts were determined in 17 samples collected over...

Liberti A.; Ciccioli P.; Brancaleoni E.; Cecinato A., 1982: Determination of poly chloro di benzo p dioxins and poly chloro di benzo furans in environmental samples by gas chromatography mass spectrometry. An analytical procedure was developed for the simultaneous determination at parts-per-trillion (1012) level of tri-, tetra-, hexa-, hepta- and octachlorodibenzo-p-dioxins (PCDD) and polychlorodibenzofurans (PCDF) in solid environmental samples and...

Albro P.W.; Corbett B.J., 1977: Extraction and clean up of animal tissues for subsequent determination of mixtures of chlorinated di benzo p dioxins and di benzo furans. Chemosphere 6(7): 381-385

Buser, H.R., 1976: High resolution gas chromatography of poly chlorinated di benzo p dioxins and di benzo furans. Glass capillary columns with different stationary phases (OV-101, OV-17 and Silar 10c) were used to study the separation of polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF). Thin-film, narrow bore glass capillary columns (22 m .ti...

Hutzinger O.; Olie K.; Lustenhouwer J.W.A.; Okey A.B.; Bandiera S.; Safe S., 1981: Poly chlorinated di benzo p dioxins and di benzo furans a bio analytical approach. Products formed from the combustion of organic compounds depends on temperature, residence time in combustion chamber and nature of the organics. Polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) are found in flue gas and fly ash o...

Bosshardt H P., 1978: Formation of poly chlorinated di benzo p dioxins and di benzo furans by burning or heating chlorophenates. Chemosphere: 269-281

Ryan J.J.; Pilon J.C., 1982: Poly aromatic hydro carbons as high performance liquid chromatographic calibration standards for the low level determination of chlorinated di benzo p dioxins and chlorinated di benzo furans in biological samples. A series of polyaromatic hydrocarbons (PAH) was used to calibrate the retention times of chlorinated dibenzo-p-dioxins (dioxins) and chlorinated dibenzofurans (furans) on high-performance liquid chromatography (HPLC) in the ultratrace analysis of...