Determination of polybrominated diphenyl ethers in environmental standard reference materials |
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Authors: | Heather M Stapleton Jennifer M Keller Michele M Schantz John R Kucklick Stefan D Leigh Stephen A Wise |
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Institution: | (1) Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;(2) Analytical Chemistry Division, Hollings Marine Laboratory, National Institute of Standards and Technology, Charleston, SC 29412, USA;(3) Statistical Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;(4) Present address: Duke University, Nicholas School of the Environment and Earth Sciences, Durham, NC 27708, USA |
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Abstract: | Standard reference materials (SRMs) are valuable tools in developing and validating analytical methods to improve quality
assurance standards. The National Institute of Standards and Technology (NIST) has a long history of providing environmental
SRMs with certified concentrations of organic and inorganic contaminants. Here we report on new certified and reference concentrations
for 27 polybrominated diphenyl ether (PBDE) congeners in seven different SRMs: cod-liver oil, whale blubber, fish tissue (two
materials), mussel tissue and sediment (two materials). PBDEs were measured in these SRMs, with the lowest concentrations
measured in mussel tissue (SRM 1974b) and the highest in sediment collected from the New York/New Jersey Waterway (SRM 1944).
Comparing the relative PBDE congener concentrations within the samples, we found the biota SRMs contained primarily tetrabrominated
and pentabrominated diphenyl ethers, whereas the sediment SRMs contained primarily decabromodiphenyl ether (BDE 209). The
cod-liver oil (SRM 1588b) and whale blubber (SRM 1945) materials were also found to contain measurable concentrations of two
methoxylated PBDEs (MeO-BDEs). Certified and reference concentrations are reported for 12 PBDE congeners measured in the biota
SRMs and reference values are available for two MeO-BDEs. Results from a sediment interlaboratory comparison PBDE exercise
are available for the two sediment SRMs (1941b and 1944). |
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Keywords: | Polybrominated diphenyl ethers Standard reference materials Certified reference materials Fish tissue Sediment Methoxylated polybrominated diphenyl ethers |
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