Wildlife and Landscape Science Directorate, Science and Technology Branch, Environment and Climate Change Canada, National Wildlife Research Centre, Carleton University, Ottawa, ON K1A 0H3, Canada.
Wildlife and Landscape Science Directorate, Science and Technology Branch, Environment and Climate Change Canada, National Wildlife Research Centre, Carleton University, Ottawa, ON K1A 0H3, Canada.
Sci Total Environ. 2017 Dec 31;607-608:262-270. doi: 10.1016/j.scitotenv.2017.06.252. Epub 2017 Jul 27.
Side-chain fluorinated polymer surfactants are the main components of fabric protector sprays and used extensively on furniture and textiles. The composition of these commercial protector products has changed, but there is currently a total dearth of information on these novel fluorinated polymers in the environment. Using a developed analytical approach, two complementary studies examined the distribution of Scotchgard™ fabric protector components in aquatic sediment and in agricultural soils where wastewater treatment plant (WWTP) sourced biosolid application occurred, and in samples from sites in the Laurentian Great Lakes basin of North America. The main components in the pre- and post-2002 Scotchgard™ fabric protectors were identified by MS/MS and Q-TOF-MS to contain a perfluorooctane sulfonamide (S1) and perfluorobutane sulfonamide (S2) based side-chain, respectively, and bonded to a polymer backbone. In fifteen sediment samples collected in 2012-2013 from western Lake Erie and Saginaw Bay (Lake Huron), S1 was in all sediment samples (0.18 to 461.59ng/g dry weight (d.w.)); S2 was in 80% of the sediment samples (<0.03 to 24.08ng/g d.w.). Thirteen soil samples were collected (2015) from a biosolid applied and two non-biosolid applied farm field sites in southern Ontario (Canada). S1 was detected in 100% of the soil samples from biosolid-augmented agricultural sites (mean 236.36ng/g d.w.; range 41.87 to 622.46ng/g d.w.), and at concentrations much greater than in the aquatic sediment samples. The concentration of S1 and S2 in soil and sediment samples were also much greater than the total concentration of other per-and poly-fluoroalkyl substances (PFASs) that were measured. The ratio of S1 concentration versus ∑PFAS concentration was up to 1616 in sediment samples from Lake Erie. This results helps to explain why known PFASs account for low percentages of the total extractable organic fluorine (EOF) content in sediment.
侧链全氟聚合物表面活性剂是织物保护喷雾的主要成分，广泛用于家具和纺织品。这些商业保护产品的成分已经发生了变化，但目前环境中这些新型含氟聚合物的信息完全缺乏。使用开发的分析方法，两项互补研究检查了斯考奇加德（Scotchgard）织物保护剂成分在水生沉积物和污水处理厂（WWTP）来源的生物固体应用发生的农业土壤中的分布情况，以及在北美大湖流域的几个地点的样本中。通过 MS/MS 和 Q-TOF-MS 鉴定了 2002 年前和 2002 年后斯考奇加德（Scotchgard）织物保护剂的主要成分，分别含有全氟辛烷磺酰胺（S1）和全氟丁烷磺酰胺（S2）为侧链，并与聚合物主链相连。在 2012-2013 年从伊利湖西部和萨吉诺湾（休伦湖）采集的 15 个沉积物样本中，所有沉积物样本（干重 0.18 至 461.59ng/g）中均存在 S1；80%的沉积物样本（干重 0.03 至 24.08ng/g）中存在 S2。2015 年，在加拿大安大略省（加拿大）的一个生物固体应用和两个非生物固体应用的农田采集了 13 个土壤样本。在生物固体增强农业地点的土壤样本中，S1 的检出率为 100%（干重平均浓度 236.36ng/g；范围 41.87 至 622.46ng/g），且浓度远高于水生沉积物样本。土壤和沉积物样本中 S1 和 S2 的浓度也远高于测量的其他全氟和多氟烷基物质（PFAS）的总浓度。在伊利湖的沉积物样本中，S1 浓度与∑PFAS 浓度的比值高达 1616。这一结果有助于解释为什么已知的 PFASs 在沉积物中总可提取有机氟（EOF）含量中只占很小的比例。
