Distribution of Per- and Polyfluoroalkyl Substances in the Rapidly Urbanizing Arroyo Colorado Watershed, Texas

IF 0.9 Q4 WATER RESOURCES
Yina Liu, Michael R. Shields, Sangeetha Puthigai, Lucas F. Gregory, Allen A. Berthold
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Abstract

This study presents the first report of per- and polyfluoroalkyl substances (PFAS) in water samples collected in the Arroyo Colorado (n = 15), irrigation canals (n = 6), stormwater and wastewater retention ponds (n = 7), as well as drinking waters (n = 2) across the Arroyo Colorado watershed. Of the 30 PFAS monitored in this study, 14 were detected in the samples in various combinations. Short-chain PFAS (less than 8 carbon atoms) were observed in most samples. Water collected from the Arroyo Colorado showed significant spatial variabilities, with high total PFAS concentrations observed near possible point sources - a municipal airport and wastewater treatment facilities. PFAS concentrations were generally higher in water samples collected in stormwater and wastewater retention ponds than in the Arroyo Colorado and irrigation canals. PFAS in stormwater retention ponds likely came from roadway runoff. Short-chain PFAS were observed in the two municipal water samples, but they were below the current U.S. EPA regulation limits or are not currently regulated. This study provides useful information for water quality in this region and provides insights into PFAS occurrence in a rapidly urbanizing area.

Abstract Image

全氟和多氟烷基物质在得克萨斯州快速城市化的阿罗约科罗拉多流域的分布情况
本研究首次报告了在科罗拉多河 Arroyo Colorado 流域采集的水样(n = 15)、灌溉渠(n = 6)、雨水和废水保留池(n = 7)以及饮用水(n = 2)中的全氟和多氟烷基物质 (PFAS)。在本研究监测到的 30 种 PFAS 中,有 14 种以不同的组合在样本中被检测到。在大多数样本中都观察到了短链 PFAS(小于 8 个碳原子)。从科罗拉多河阿罗约流域采集的水样显示出明显的空间差异,在可能的点污染源--一个市政机场和废水处理设施--附近观察到的 PFAS 总浓度较高。在雨水和废水蓄水池中采集的水样中,PFAS 的浓度普遍高于科罗拉多河阿罗约河和灌溉渠中的浓度。雨水蓄水池中的 PFAS 可能来自道路径流。在两个市政水样中观察到了短链全氟辛烷磺酸,但其含量低于美国环保局目前的规定限值,或目前不受管制。这项研究为该地区的水质提供了有用的信息,并为了解快速城市化地区的全氟辛烷磺酸发生情况提供了见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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