Interactions of per- and polyfluoroalkyl substances with polypropylene plastic and borosilicate glass: Resolving key uncertainties for accurate analysis

IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL Journal of hazardous materials advances Pub Date : 2024-09-07 DOI:10.1016/j.hazadv.2024.100463
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Abstract

This study addresses critical uncertainties regarding the interactions of per- and polyfluoroalkyl substances (PFAS) with plastic (e.g., polypropylene, PP) and borosilicate glass materials, which are either recommended or advised against by prevalent analytical methods. Our results indicate that borosilicate glass minimally adsorbs short-chain, moderate-chain, and some long-chain PFAS with <11 perfluorinated carbons, maintaining the integrity of PFAS solutions. The ratios of PFAS concentrations in solutions contained in borosilicate glass compared to those in solutions unaffected by laboratory ware interaction showed minimal deviation, with most compounds displaying values within the established acceptable limits of 87 % to 107 % for C3‒C10 PFAS. Similarly, PP tubes, syringes, and pipette tips also demonstrated minimal or moderate interactions: perfluorooctanoate (PFOA) and perfluorooctanesulfonate (PFOS) showed relatively consistent recoveries in PP syringes and pipette tips, ranging from 96 % to 107 % and minimal adsorption to PP centrifuge tubes during a 105-h contact period. Both materials, however, showed significant adsorption of the longest-chain PFAS in this study (C11), pointing to enhanced adsorption due to their hydrophobic nature. However, microfilters demonstrate significant adsorption of long-chain PFAS, including PFOA and PFOS. We developed a Gradient Flush Syringe Method to mitigate adsorption losses on syringe filters, achieved a significant reduction in C11 PFAS retention on filters from >90 % to nearly 0.01 %. Methanol-induced matrix effects were also studied, showed that increasing methanol concentrations led to artificially increasing the analyzed concentration of short-chain PFAS from the true concentration.

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全氟和多氟烷基物质与聚丙烯塑料和硼硅玻璃的相互作用:解决准确分析的关键不确定性
这项研究解决了全氟和多氟烷基物质(PFAS)与塑料(如聚丙烯、聚丙烯)和硼硅酸盐玻璃材料之间相互作用的关键不确定性问题。我们的研究结果表明,硼硅玻璃对短链、中链和某些长链全氟碳化物的吸附量很小,能保持全氟碳化物溶液的完整性。与未受实验室器皿相互作用影响的溶液相比,硼硅玻璃所含溶液中的全氟辛烷磺酸浓度比率偏差极小,大多数化合物的数值都在 C3-C10 全氟辛烷磺酸 87% 至 107% 的既定可接受范围内。同样,聚丙烯管、注射器和移液器吸头也表现出极小或中等程度的相互作用:全氟辛酸(PFOA)和全氟辛烷磺酸(PFOS)在聚丙烯注射器和移液器吸头中的回收率相对稳定,在 96% 到 107% 之间,在 105 小时的接触期内对聚丙烯离心管的吸附极小。不过,在本研究中,这两种材料都对最长链的全氟辛烷磺酸(C11)有明显的吸附作用,这表明它们的疏水性增强了吸附能力。不过,微过滤器对包括全氟辛烷磺酸和全氟辛烷磺酸在内的长链 PFAS 有明显的吸附作用。我们开发了一种梯度冲洗注射器方法来减少注射器过滤器上的吸附损失,从而将过滤器上的 C11 PFAS 保留率从 90% 显著降至近 0.01%。此外,还研究了甲醇引起的基质效应,结果表明,甲醇浓度的增加会导致短链全氟辛烷磺酸的分析浓度与真实浓度相差甚远。
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来源期刊
Journal of hazardous materials advances
Journal of hazardous materials advances Environmental Engineering
CiteScore
4.80
自引率
0.00%
发文量
0
审稿时长
50 days
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