Determination of non-ortho polychlorinated biphenyls in environmental Standard Reference Materials.
The concentrations of three non-ortho ("coplanar") polychlorinated biphenyls, 3,3',4,4'-tetrachlorobiphenyl (IUPAC PCB 77), 3,3',4,4',5-pentachlorobiphenyl (IUPAC PCB 126), and 3,3',4,4',5,5'-hexachlorobiphenyl (IUPAC PCB 169), were determined in five NIST Standard Reference Materials (SRMs) of environmental and biological interest. The measured levels were approximately between (0.2 to 1.3) ng/g in SRM 1588a (Organics in Cod Liver Oil), (0.3 to 9) ng/g in SRM 1944 (New York/New Jersey Waterway Sediment), (0.2 to 0.4) ng/g in SRM 1945 (Organics in Whale Blubber), (1 to 18) ng/g in SRM 2974 (Organics in Freeze-dried Mussel Tissue [Mytilus edulis]), and (0.1 to 0.4) ng/g in candidate SRM 1946 (Lake Superior Fish Tissue). PCB 169 was present at < 0.1 ng/g in SRMs 1944 and 2974.
Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8392, USA.
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D000818:Animals; D049872:Bivalvia; D002250:Carbon Radioisotopes; D002845:Chromatography; D003060:Cod Liver Oil / Q000032:analysis; D005399:Fishes; D005506:Food Contamination / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D015386:Hazardous Substances / Q000032:analysis* / Q000592:standards; D009515:New Jersey; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000592:standards; D012015:Reference Standards; D015203:Reproducibility of Results; D014873:Water Pollutants / Q000032:analysis; D014881:Water Supply / Q000032:analysis
D002250:Carbon Radioisotopes; D015386:Hazardous Substances; D014873:Water Pollutants; D003060:Cod Liver Oil; D011078:Polychlorinated Biphenyls