Institute of Food Safety, Animal Health and Environment, BIOR, Lejupes iela 3, Riga, LV-1076, Latvia.
Institute of Food Safety, Animal Health and Environment, BIOR, Lejupes iela 3, Riga, LV-1076, Latvia.
Chemosphere. 2018 Apr;197:680-690. doi: 10.1016/j.chemosphere.2018.01.105.
Fifteen halogenated flame retardants (HFRs) including seven emerging brominated flame retardants (EBFRs) and eight dechlorane-related compounds (DRCs) were analyzed in eels (Anguilla anguilla) sampled from five Latvian lakes. Out of the seven EBFRs, hexabromocyclododecane (HBCD) and decabromodiphenyl ethane (DBDPE) were found in eels in quantifiable concentrations, up to 6.58 and 33.0 ng g lipid weight (l.w.), respectively. The mean total concentration of DRCs (∑) in the samples was 0.62 ng g l.w. and the geographical distribution of DRC contamination was nearly uniform among the selected lakes. Dechlorane 602 (Dec 602) was the predominant component, whereas the composition of mixture containing syn- and anti-Dechlorane Plus (DP) stereoisomers showed a pronounced enrichment of the anti-DP isomer and was close to the composition of OxyChem DP commercial product. The determined concentrations of HFRs were lower than in other studies of aquatic biota from Europe and Asia, and the obtained results reflect the acceptable environmental status of Latvian lakes with regard to the total content of HBCD (∑), considering the environmental quality standards (EQS) stated in the Directive 2013/39/EU. The highest ∑ levels were observed in eels from lakes corresponding to the industrialization of those areas, while the results of principal component analysis (PCA) showed that the concentration of HBCD depended on the particular sampling lake, reflecting non-uniform contamination of the Latvian environment with this EBFR.
从拉脱维亚的五个湖泊中采集的鳗鱼（Anguilla anguilla）中分析了十五种卤代阻燃剂（HFRs），包括七种新兴溴代阻燃剂（EBFRs）和八种脱氯烷相关化合物（DRCs）。在七种 EBFRs 中，六溴环十二烷（HBCD）和十溴二苯乙烷（DBDPE）在鳗鱼中被发现有可量化的浓度，分别高达 6.58 和 33.0ng/g 脂质重量（l.w.）。样本中 DRCs（∑）的平均总浓度为 0.62ng/g l.w.，所选湖泊之间 DRC 污染的地理分布几乎均匀。脱氯烷 602（Dec 602）是主要成分，而含有顺式和反式脱氯烷加（DP）立体异构体的混合物组成显示出反 DP 异构体的明显富集，并且接近 OxyChem DP 商业产品的组成。测定的 HFR 浓度低于欧洲和亚洲其他水生生物群的研究，获得的结果反映了拉脱维亚湖泊的可接受环境状况，就 2013/39/EU 指令中规定的环境质量标准（EQS）而言，HBCD（∑）的总含量。在与这些地区工业化相对应的湖泊中，鳗鱼中观察到的最高∑水平，而主成分分析（PCA）的结果表明 HBCD 的浓度取决于特定的采样湖泊，反映了拉脱维亚环境中这种 EBFR 的非均匀污染。
