Understanding and Enhancing PFAS Phytoremediation Mechanisms Using Novel Nanomaterials

摘要 每 国际吧 环境 有前途 依赖 有效性 小说 假设 定制 水 轨道 提供 合成 磺酸 GenX） 成像 谱 在 通过 成像 植物修复 和 数千 项目 的 调动 过程 和多氟烷基物质（PFAS）在环境中无处不在，对健康构成威胁 存在超过7500种PFAS，并且都具有强的C-F键，使得它们在 因此，迫切需要有效的PFAS清洁替代品。植物修复是一种 污染土壤原位修复技术。然而，植物对PFAS的吸收非常高， 分子的氟化链部分的长度。因此，植物修复有限 对于较大的全氟辛烷磺酸，如全氟辛烷磺酸（PFOS）。我们建议开发定制 纳米材料（NNM）促进PFAS进入大麻植物的内化和移动性。我们 碳量子点（CD）和超多孔介孔二氧化硅纳米颗粒（UMN） 增加对PFAS的亲和力将增强PFAS的摄取和转运， 和土壤变成大麻植物这些新材料的发光特性将使我们能够直观地 PFAS对颗粒的吸附和纳米颗粒进入和穿过植物的移动， 关于我们的植物修复系统的机械信息。在具体目标1中，我们将设计， 并测试定制CD和UMN对两种传统（全氟辛烷）混合物的亲和力 酸，PFOS;全氟辛酸，PFOA）和两种新的（全氟丁磺酸，PFBS;和 PFAS。纳米颗粒-PFAS复合物将通过19 F核磁共振进行评估， 技术，而吸附速率将通过液相色谱高分辨率质量 具体目标2将测试我们的NNM是否促进水培植物的植物修复。 同时，我们将利用这个简化的植物生长系统来阐明NNM的吸收机制 和植物内的易位。我们将分析植物组织中NNMs的吸收和定位， 和光谱技术。具体目标3将测试NNM增强的疗效 在从PFAS污染的土地获得的田间土壤中。我们将定量分析25个PFAS 评估它们的吸收和转运，并应用非靶向分析技术来筛选 PFAS可能存在于土壤和植物测试。在此期间开发的纳米材料 将推进植物修复作为一种经济和可持续的技术， 土壤中的PFAS。此外，该项目的研究结果将有助于更好地了解NNM如何 植物-土壤系统中的污染物，可用于优化植物修复的信息 与其他植物物种、污染物类别和纳米材料的关系。 L

ABSTRACT Per- worldwide. environment. promising dependent effectiveness novel hypothesize customized water track providing synthesize sulfonic GenX) imaging spectroscopy. At by imaging phytoremediation and thousands project of mobilize processes and polyfluoroalkyl substances (PFAS) are ubiquitous in the environment and represent a health threat More than 7500 PFAS exist, and all have strong C-F bonds that render them persistent in the Therefore, effective alternatives for clean-up of PFAS are urgently needed. Phytoremediation is a technique for in-situ restoration of contaminated soil. However, plant uptake of PFAS is highly on the length of the fluorinated chain portion of the molecule. As such, phytoremediation has limited for larger PFAS, such as perfluorooctane sulfonic acid (PFOS). We propose to develop custom nanomaterials (NNMs) that facilitate internalization and mobility of PFAS into hemp plants. We that carbon dots (CDs) and ultraporous mesostructured silica nanoparticles (UMNs) to have an increased affinity for PFAS will enhance PFAS uptake and translocation from and soil into hemp plants . The luminescent properties of these novel materials will allow us to visually both PFAS sorption to the particles and nanoparticle movement into and throughout the plants, thus mechanistic information about our phytoremediation system. In Specific Aim 1 we will design, and test the affinity of customized CDs and UMNs for a mixture of two legacy (perfluorooctane acid, PFOS; perfluorooctanoic acid, PFOA) and two new (perfluorobutane sulfonic acid, PFBS; and PFAS. The nanoparticle-PFAS complex will be evaluated by 19 F nuclear magnetic resonance and techniques, while the sorption rate will be measured by liquid chromatography high resolution mass Specific Aim 2 wil test if our NNMs promote phytoremediation in hydroponically-grown plants. the same time, we will use this simplified plant growth system to elucidate the mechanisms of NNM uptake and translocation within plants. We will analyze the uptake and localization of NNMs in plant tissues by and spectroscopy techniques. Specific Aim 3 will test the efficacy of NNM-enhanced in field soils obtained from PFAS-contaminated land. We will quantitatively analyze 25 PFAS evaluate their uptake and translocation, and also apply non-targeted analysis techniques to screen for of PFAS that may be present in the soils and plants tested. The nanomaterials developed in this will advance phytoremediation as an economical and sustainable technique for removing a wide range PFAS from soil. In addition, findings from this project will result in a better understanding of how NNMs contaminants in plant-soil systems, information that can be translated to optimize phytoremediation with other plant species, contaminant classes, and nanomaterials. l