Stapleton Heather M, Keller Jennifer M, Schantz Michele M, Kucklick John R, Leigh Stefan D, Wise Stephen A
Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.
Anal Bioanal Chem. 2007 Apr;387(7):2365-79. doi: 10.1007/s00216-006-1054-5. Epub 2007 Jan 6.
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).
标准参考物质（SRMs）是开发和验证分析方法以提高质量保证标准的宝贵工具。美国国家标准与技术研究院（NIST）长期以来一直提供具有有机和无机污染物认证浓度的环境标准参考物质。在此，我们报告了七种不同标准参考物质中27种多溴二苯醚（PBDE）同系物的新认证浓度和参考浓度，这七种标准参考物质分别是：鱼肝油、鲸脂、鱼类组织（两种物质）、贻贝组织和沉积物（两种物质）。对这些标准参考物质中的多溴二苯醚进行了测量，贻贝组织（SRM 1974b）中的浓度最低，而从纽约/新泽西水道采集的沉积物（SRM 1944）中的浓度最高。比较样品中多溴二苯醚同系物的相对浓度，我们发现生物群标准参考物质主要含有四溴和五溴二苯醚，而沉积物标准参考物质主要含有十溴二苯醚（BDE 209）。还发现鱼肝油（SRM 1588b）和鲸脂（SRM 1945）物质中含有可测量浓度的两种甲氧基化多溴二苯醚（MeO-BDEs）。报告了在生物群标准参考物质中测量的12种多溴二苯醚同系物的认证浓度和参考浓度，并且有两种甲氧基化多溴二苯醚的参考值。两种沉积物标准参考物质（1941b和1944）有沉积物实验室间多溴二苯醚比对实验结果。
