Contribution to the identification and quantitation of aroclor mixtures. Aroclor 1248 is 56% tetrachloro congeners four chlorines, and aroclor 1262 is 47% heptachloro congeners seven chlorines. Identification and quantitation of pcb aroclor mixtures in a single run using the agilent 7000b triple quadrupole gcms authors dale r. Aroclor 1254 is a widely studied commercial polychlorinated biphenyl pcb mixture which, by definition, contains 54% chlorine by weight. Comparison of the compositions of aroclor 1242 and aroclor. Pcb congener composition of aroclors a detailed analyses of the pcb congener distributions present in aroclors 1016, 1242, 1248, 1254, and 1260. It is composed of mono to heptachlorinated homologs. Alteration of aroclor 1248 in foundry waste by volatilization. Aroclor 1248 solution certified reference material, 200. Development of advisory levels for polychlorinated. Aroclor 1248, the aroclor used onsite and recovered from the floor inside the foundry r2 0.
Persistence and degradability aroclor 1248 standard persistence and degradability may cause longterm adverse effects in the environment. The wrw al of 12 4 ppm is for aroclors 1221, 1232, 1242, 1248, 1254, and 1260. Comparison of composition of aroclor mixtures tested. The hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. Sections i health hazard assessments for noncarcinogenic effects and. Liver of rats that received aroclor 1254 on either day 7 or on day 28 contained in increased level of gammaglutamyltranspeptidase. Production, importexport, use, and disposal chemical company produced aroclors 1221, 1232, 1242, 1248, 1254, 1260, 1262, and 1268. A polychlorinated biphenyl pcb is an organic chlorine compound with the formula c 12 h 10. The concentration in the sample is calculated using the sample weight or volume and the extract volume. Description, aroclor 1248 is a commercial mixture of pcbs with an average chlorine.
The new aroclor 1016 was made by distilling aroclor 1242. The information in cameo chemicals comes from a variety of data sources. For more information about the substance, you may click one of the links below to take you to the relevant section. It plays a role in how your page is seen by search engine crawlers, and how it appears in serps. Frame 1997 also reported data on the composition of aroclor 1232 and 1248, analysed by one of the participating laboratories in his study referred to as jwc. Aroclor 1242 had approximately 150 ppb of chlorinated dibenfurans, of which 43% was the toxic 2,3,7,9tetrachloro isomer. Analyzing pcbs in source materials and environmental media.
Congenerspecific compositions of example marketed aroclors. Spex certiprep is accredited by a2la for organic and inorganic certified reference materials. Pcb1248 polychlorinated biphenyl mixture with 48% chlorine. Towards a global historical emission inventory for. Analysis of the commercial feed used for this study revealed contamination with congeners specific for aroclor 1248, present in the parts per billion range. Differences between the pcb aroclors oreilly, talbot. Although one might expect some 140 to 150 separate congeners in an aroclor, the actual analysis of aroclor 1248, for example, identified less than 50 peaks using highresolution gas chromatog. Epa region 4 technical services section issue paper for. Pcbs made in the united states were marketed under the trade name aroclor and most are identified by a fourdigit numbering code in which the first two digits indicate that the parent molecule is a biphenyl and for the 1200 series aroclors the last two digits indicate the chlorine content by weight. Acute ingestion of transformer oil may cause abdominal pain, nausea, and vomiting. Recent reports indicate substantial differences in the congener composition among aroclor lots and hence their biologic effects.
Aroclor 1248 is a commercial mixture of pcbs with an average chlorine content of 48%. A meta description is an html tag in the html code of your website, which allows you to customize a section of text that describes the page itself. Predicted data is generated using the us environmental protection agencys episuite. Acute exposure of liquid or vapor may cause irritation.
Us epa, oswer, office of resource conservation and recovery. Example of documented pcb dechlorination processes and. This light yellow viscous liquid is a particularly highly chlorinated pcb mixture which, by definition, contains 54% chlorine by weight. Cas number iupac name type 36363 polychlorinated biphenyl pcb category. Pairs of different lots of aroclors 1248 and 1254 displayed markedly different. Dale published november 2007 to be presented a1 wm 2008 phoenix wm symposia, inc.
Congenerbased aroclor quantification and speciation. Aroclor 1016 is a commercial mixture of polyclorinated biphenyls pcbs devoid of chlorinated dibenzofurans barsotti and van miller, 1984. This test method describes the use or aroclors 1016, 1221, 1232, 1242, 1248, 1254, 1260, 1262, and 1268, as reference standards, but others could also be included. Aroclor 1248 is a light yellow to yellowgreen colored, commercially available polychlorinated biphenyl product liquid mixture, that consists of tri, tetra, and pentachloro congeners. Aroclor 1254 was admin to each rat 7, 28, and 49 days after the dena, and some rats were killed 21 days after each dose of aroclor. Aroclor 1242 produced no ill effects on basis of mortality, growth, pathology, organ enlargement, liver function, or hematological changes. Note that the progression of weathering resulted in altering aroclor 1242 to resemble standard aroclor 1248. Example aroclors produced included aroclor 1242, 1248, 1254, and 1260, among other aroclors. Dale walker agilent gcms applications engineer t427 vs ar1248 standard.
Pcb congener composition of aroclors 1248 top and 1260 bottom 19. Polychlorinated biphenyls were once widely deployed as dielectric and coolant fluids in electrical apparatus, carbonless copy paper and in heat transfer fluids because of their longevity, pcbs are still widely in use, even though their manufacture has declined drastically since the 1960s. Separate analyte names, cas numbers, or element abbreviations with a hard return enter key, or paste list directly into the box. In addition to being registered as an iso 9001 facility, spex certiprep is accredited by a2la as complying with the requirements of isoiec 17025 and iso 17034. The byproduct of this distillation was subjected to an additional chlorination step and sold as aroclor 1254.
Aroclor 1254 is one of several commercial pcb mixtures that were marketed between the 1930s and 70s. A comparison of the strengths, weaknesses, and proper use of two alternative approaches. Polychlorinated biphenyls pcbs are a group of 209 synthetic organic compounds with 110 chlorine atoms attached to biphenyl. Soil, water and air jim occhhialini jim okun patricia mcisaac. Identification and quantitation of pcb aroclor mixtures in. Pcb congener composition in a sediment sample collected on the west 4c2 and east sb23 side of hunters point shipyard south basin, and the pcb composition in a mixture of aroclors 12541260 and only aroclor.
Congenerbased aroclor quantification and speciation techniques. This study evaluates aroclor 1260, a pcb mixture with congener composition mimicking that of human adipose tissue, and selected congeners, as potential ligands for these receptors utilizing human hepatomaderived hepg2 and primatederived cos1. Aroclors 1016 and 1242 have similar capillary gas chromatography gc. Walker and fred feyerherm agilent technologies, inc. In addition, data for aroclor 1016, 1242, 1254 and 1260 from a previous study schulz et al. Aroclor 1242 high level pcb1242h organic standards. The complete polychlorinated biphenyl compositions of two american products, aroclor 1242 and its more modern replacement, aroclor 1016, have been determined by gasliquid chromatography glc on twelve liquid phases of differing selectivities. Aroclor 1248 solution certified reference material, 500 mg. Usa home product directory analyticalchromatography analytical standards additional standards chromatography environmental standards aroclors, pcbs, and dioxins aroclors analytical chromatography home.
Supelco aroclor standard mix 1, aroclor standard 200 ugml dichloromethane 1x1ml, aroclor standard 200 ugml hexane 1x1ml. Aroclor 1016 was a refined version of aroclor 1242 that contained a lower percentage of higher and lower chlorinated congeners. Aroclor 1254 produced no harmful effects regarding growth or mortality, but did produce enlarged livers with microscopic evidence of hepatic cellular injury. Program and regulatory information about this substance, including links to epa applicationssystems, statuesregulations, or other sources that track or regulate this substance. One of the three patterns matched unaltered aroclor 1248. Small amounts of oil aspirated during ingestion or vomiting may cause lung damage. Comparison of the compositions of aroclor 1242 and aroclor 1016. Pcb data set 1 is provided in the supplementary material on this books. Refer to chapter one and the manufacturers instructions for. Pcb congener composition in a sediment sample collected on the west 4c2 and east sb23 side of hunters point shipyard south basin, and the pcb composition in a.
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