Institution of Russian Academy of Sciences Saint-Petersburg Scientific-Research Centre for Ecological Safety, 18, Korpusnaya str, St. Petersburg, Russia, 197110.
Saint Petersburg University, University Embankment 7/9, St. Petersburg, Russia, 199034.
Environ Sci Pollut Res Int. 2019 Mar;26(8):7375-7389. doi: 10.1007/s11356-018-1945-y. Epub 2018 May 28.
A total of 26 samples of surface sediments collected in the Neva River (including the St. Petersburg city area) and in the Russian part of the Gulf of Finland were analyzed for 17 polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans (PCDD/Fs), 12 dioxin-like polychlorinated biphenyls (dl-PCBs), and 10 polybrominated diphenyl ethers (PBDEs). The concentrations of total PCDD/Fs and dl-PCBs in sediments ranged from < 0.05 to 219 pg g d.w. and from 44 to 246,600 pg g d.w. respectively. The total World Health Organization toxic equivalent (WHO-TEQ) values varied between 0.01 and 59.0 pg g. In the majority of cases, the PCDD/F and dl-PCB concentrations do not exceed the threshold effect level (TEL) recommended by Helsinki Commission (HELCOM) as quantitative target for the sum of PCDD/Fs and dl-PCBs. The congener profile indicates that combustion is the primary source of PCDD/Fs in most of the studied samples. For the PCBs, the historical use of technical PCB products was identified as the major source. ΣPBDE concentrations ranged from 0.004 to 1.8 ng g d.w. The congener profile results show that BDE-47 (tetra-BDE) is the dominant congener in sediment samples. According to the sediment and water quality guidelines established in the EU (PNEC) and in Canada (FEQG), all the samples studied can be classified as lowly contaminated by PBDEs. The sediment concentrations of PCDD/Fs, dl-PCBs, and PBDEs measured in this study were comparable to or lower than those reported for other areas of the Baltic Sea.
共分析了来自涅瓦河（包括圣彼得堡市区）和芬兰湾俄罗斯部分的 26 个表层沉积物样本，这些样本中检测了 17 种多氯二苯并对二恶英、多氯二苯并呋喃（PCDD/Fs）、12 种二恶英类多氯联苯（dl-PCBs）和 10 种多溴二苯醚（PBDEs）。沉积物中总 PCDD/Fs 和 dl-PCBs 的浓度范围分别为<0.05-219 pg g dw 和 44-246,600 pg g dw。世界卫生组织毒性当量（WHO-TEQ）总价值在 0.01-59.0 pg g 之间变化。在大多数情况下，PCDD/F 和 dl-PCB 的浓度没有超过赫尔辛基委员会（HELCOM）推荐的定量目标 TEL，即 PCDD/Fs 和 dl-PCBs 的总和。同系物分布表明，燃烧是大多数研究样本中 PCDD/Fs 的主要来源。对于 PCBs，历史上使用技术 PCB 产品被确定为主要来源。ΣPBDE 浓度范围为 0.004-1.8 ng g dw。同系物分布结果表明，BDE-47（四溴二苯醚）是沉积物样品中的主要同系物。根据欧盟（PNEC）和加拿大（FEQG）制定的沉积物和水质指南，所有研究样本都可被归类为低 PBDE 污染。本研究中测量的 PCDD/Fs、dl-PCBs 和 PBDEs 的沉积物浓度与波罗的海其他地区报告的浓度相当或更低。
