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在淡水表面微层和天然泡中对和多基基物质 (PFAS) 和溶解有机物质的优先分区

Summer L Sherman-Bertinetti¹, Edward G Kostelnik², Kaitlyn J Gruber³

¹Department of Civil and Environmental Engineering University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.

Environmental science & technology

|July 8, 2024

概括

天然泡在淡水中缩了和多基物质 (PFAS),其较高度与较长的PFAS链和溶解有机碳 (DOC) 有关. 在这项研究中,PFAS的表面微层积累是有限的.

科学领域:

环境化学环境化学
水上科学水上科学
污染物水文学污染物水文学

背景情况:

和多醇基物质 (PFAS) 是在全球范围内发现的持久性合成表面活性剂.
PFAS可以积聚在表面微层 (SML) 和天然泡中,可能增加水生生物的暴露.
水化学对淡水SML和泡中PFAS积累的影响仍然不太清楚.

研究的目的:

调查36 PFAS在淡水SML和天然泡中的积累情况.
为了确定水化学参数 (pH,,溶解有机碳) 对PFAS分区的影响.
评估SML和泡中的PFAS与散装水相对的丰富系数.

主要方法:

来自威斯康星州43条河流和湖泊的水,SML和泡中的量化36个PFAS.
测量了水的化学参数,包括pH,和溶解有机碳 (DOC).
在泡和SML中对PFAS和DOC计算的规范化的丰富系数.

主要成果:

与散装水相比,泡中的PFAS度显著升高 (2300328,200 ng/L),与散装水 (6139 ng/L) 相比,富化因子高达>7000.
将PFAS分成泡的数量随链条长度增加而增加,并且与DOC度呈正相关性.
在SML (1.42.4) 中观察到PFOS和FOSA的适度缩,而其他PFAS和DOC的缩值可以忽略不计.

结论:

自然泡在淡水系统中充当了PFAS的重要蓄积物,不管水的影响如何.
泡中的PFAS积累受PFAS链长度和水中的溶解有机碳含量的影响.
在典型的动荡条件下,淡水中PFAS的表面微层积累是有限的.

关键词:

在DOM DOM中,我们可以使用DOM.在PFAS中,有很多方法.淡水淡水水的情况.天然泡是一种天然泡.表面微层是一种微层.

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