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Temporal Trends (1981-2013) of Per- and Polyfluoroalkyl Substances and Total Fluorine in Baltic cod (Gadus morhua).
Environmental Toxicology and Chemistry ( IF 4.1 ) Pub Date : 2020-01-13 , DOI: 10.1002/etc.4615
Lara Schultes 1 , Oskar Sandblom 1 , Katja Broeg 2 , Anders Bignert 3 , Jonathan P Benskin 1
Affiliation  

Temporal trends from 1981 to 2013 of 28 per- and polyfluoroalkyl substances (PFASs) were investigated in liver tissue of cod (Gadus morhua) sampled near southeast Gotland, in the Baltic Sea. A total of 10 PFASs were detected, with ∑28 PFAS geometric mean concentrations ranging from 6.03 to 23.9 ng/g ww. Perfluorooctane sulfonate (PFOS) was the predominant PFAS, which increased at a rate of 3.4% per year. Most long-chain perfluoroalkyl carboxylic acids increased at rates of 3.9 to 7.3% per year except for perfluorooctanoate (PFOA), which did not change significantly over time. The perfluoroalkyl acid precursors perfluorooctane sulfonamide (FOSA) and 6:2 fluorotelomer sulfonic acid were detected, of which the former (FOSA) declined at a rate of -4.4% per year, possibly reflecting its phase-out starting in 2000. An alternate time trend analysis from 2000 to 2013 produced slightly different results, with most compounds increasing at slower rates compared to the entire study period. An exception was perfluorohexane sulfonate (PFHxS), increasing at a faster rate of 3.7% measured from 2000 on, compared to the 3.0% per year measured starting from 1981. Analysis of the total fluorine content of the samples revealed large amounts of unidentified fluorine; however, its composition (organic or inorganic) remains unclear. Significant negative correlations were found between concentrations of individual PFASs (with the exception of PFOS) and liver somatic index. In addition, body length was negatively correlated with PFOA and perfluorononanoate, but positively correlated with perfluorododecanoate (PFDoDA) and FOSA. Additional studies on endocrine, immunological, and metabolic effects of PFAS in marine fish are essential to assess the environmental risk of these substances. Environ Toxicol Chem 2020;39:300-309. © 2019 SETAC.

中文翻译:

波罗的海鳕鱼中全氟和多氟烷基物质和总氟的时间趋势(1981年至2013年)。

在波罗的海哥得兰岛东南部采样的鳕鱼肝组织中研究了1981年至2013年间28种全氟和多氟烷基物质(PFAS)的时间趋势。总共检测到10种PFAS,其中∑28 PFAS几何平均浓度为6.03至23.9 ng / g ww。全氟辛烷磺酸(PFOS)是主要的PFAS,每年以3.4%的速度增长。除全氟辛酸酯(PFOA)随时间变化不大外,大多数长链全氟烷基羧酸的年增长率为3.9%至7.3%。检测到全氟烷基酸前体全氟辛烷磺酰胺(FOSA)和6:2氟调聚物磺酸,其中前者(FOSA)每年下降-4.4%,这可能反映了从2000年开始逐步淘汰。从2000年到2013年的另一种时间趋势分析得出的结果略有不同,与整个研究期间相比,大多数化合物的增长速度较慢。全氟己烷磺酸盐(PFHxS)是个例外,从1981年开始以每年3.0%的速度测量,从2000年开始以每年3.7%的速度增长。但是,其组成(有机或无机)仍不清楚。发现各个PFAS的浓度(全氟辛烷磺酸除外)与肝脏体细胞指数之间存在显着的负相关性。另外,体长与PFOA和全氟壬酸负相关,而与全氟十二酸酯(PFDoDA)和FOSA正相关。有关内分泌,免疫学,PFAS在海水鱼类中的代谢作用对于评估这些物质的环境风险至关重要。Environ Toxicol Chem 2020; 39:300-309。©2019 SETAC。
更新日期:2020-01-26
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