Side-chain fluorinated polymer surfactants in biosolids from wastewater treatment plants.,Journal of Hazardous Materials

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Side-chain fluorinated polymer surfactants in biosolids from wastewater treatment plants.
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.jhazmat.2020.122044
Robert J Letcher ₁ , Shaogang Chu ₁ , Shirley-Anne Smyth ₂

Affiliation

High concentrations of the main components in Scotchgard™ fabric protector products (pre-2002 and post-2002; side-chain fluorinated polymer surfactants, S1 and S2, respectively) were detected in biosolids samples from twenty pan-Canadian wastewater treatment plants (WWTPs). Based on mass spectrometric analysis, S1 and S2 can be named as side-chain perfluorooctane sulfonamide-urethane polymer and side-chain perfluorobutane sulfonamide-urethane polymer, respectively. S1 (with C8F17 side-chain) concentrations ranged from 1.08-105 ng/g d.w. and S2 (with C4F9 side-chain) concentrations ranged from 37.5-2051 ng/g d.w., which were much higher than that of other commonly monitored perfluoroalkyl substances (PFAS). S1 and S2 concentrations were significantly correlated (p < 0.001; r2 = 0.6142) indicating similar source origins. A negative linear correlation was observed (p < 0.05) between concentrations of S1 (or S2) with the volume of WWTP treated wastewater per day per person (m3/person/day). The total concentration of 22 other PFAS ranged from 4.93 to 92.6 ng/g d.w., and approximately thirty times lower than S1 and S2 concentrations. The calculated elemental fluorine concentrations of ƩFS1&S2 were generally much higher than the sum of the other PFAS. PFAS concentrations in biosolids are likely underestimated without consideration of S1 and S2.

中文翻译：

废水处理厂生物固体中的侧链氟化聚合物表面活性剂。

在来自20个泛加拿大废水处理厂（WWTP）的生物固体样品中检测到高浓度的Scotchgard™织物保护剂产品中的主要成分（2002年前和2002年之后；侧链含氟聚合物表面活性剂，分别为S1和S2）。。基于质谱分析，S1和S2可以分别称为侧链全氟辛烷磺酰胺-氨基甲酸酯聚合物和侧链全氟丁烷磺酰胺-氨基甲酸酯聚合物。S1（带有C8F17侧链）的浓度范围为1.08-105 ng / g dw，S2（带有C4F9侧链）的浓度范围为37.5-2051 ng / g dw，这远远高于其他通常监测的全氟烷基物质（PFAS）。S1和S2浓度显着相关（p <0.001; r2 = 0.6142），表明来源相似。S1（或S2）的浓度与每人每天WWTP处理的废水量（m3 /人/天）之间存在负线性相关（p <0.05）。其他22种PFAS的总浓度为4.93至92.6 ng / g dw，比S1和S2浓度低约30倍。计算得出的ƩFS1和S2的元素氟浓度通常远高于其他PFAS的总和。如果不考虑S1和S2，可能会低估生物固体中的PFAS浓度。计算得出的ƩFS1和S2的元素氟浓度通常远高于其他PFAS的总和。如果不考虑S1和S2，可能会低估生物固体中的PFAS浓度。计算得出的ƩFS1和S2的元素氟浓度通常远高于其他PFAS的总和。如果不考虑S1和S2，可能会低估生物固体中的PFAS浓度。

更新日期：2020-01-11

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