Understanding and Enhancing PFAS Phytoremediation Mechanisms Using Novel Nanomaterials

摘要 每- 全世界。 环境。 大有希望 依赖于 有效性 小说 假设 定制 水 轨道 提供 合成 磺酸 GEnx) 成象 光谱学。 在… 通过 成象 植物修复 和 数千人 项目 的 动员 流程 和多氟烷基物质(PFAS)在环境中普遍存在，对健康构成威胁 现有7500多个PFA，所有这些都有很强的C-F键，使它们在 因此，迫切需要有效的替代方案来清理全氟辛烷磺酸。植物修复是一种 污染土壤就地修复技术。然而，植物对全氟辛烷磺酸的吸收很高。 分子的氟化链部分的长度。因此，植物修复受到了限制 适用于较大的全氟辛烷磺酸(全氟辛烷磺酸)。我们计划发展客户关系 纳米材料(NNM)，促进全氟辛烷磺酸在大麻植物中的内化和流动。我们 碳点(Cd)和超孔介孔结构二氧化硅纳米颗粒(UMN) 增加对全氟辛烷磺酸的亲和力将增强对全氟辛烷磺酸的摄取和转移 并将土壤转化为大麻植物。这些新材料的发光特性将使我们能够在视觉上 全氟辛烷磺酸对颗粒的吸附和纳米颗粒进入和贯穿植物的运动，因此 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，全氟辛酸；全氟辛酸，全氟辛酸)和两个新的(全氟丁烷磺酸，全氟丁烷磺酸，PFBS)； 全氟辛烷磺酸。纳米粒子-PFAS复合体将通过19F核磁共振和 技术，而吸附速率将用液相色谱高分辨质量法测量 具体目标2将测试我们的NNMS是否促进了水培植物的修复。 同时，我们将利用这种简化的植物生长系统来阐明NNM的吸收机制 和植物内的移位。我们将分析NNMS在植物组织中的摄取和定位 以及光谱学技术。特定目标3将测试NNM增强的效果 在全氟辛烷磺酸污染的土地上获得的田间土壤中。我们将对25个全氟化肥进行定量分析 评估它们的摄取和移位，并应用非靶向分析技术筛选 可能存在于所测试的土壤和植物中的全氟辛烷磺酸。在这种情况下发展起来的纳米材料 将推动植物修复作为一种经济和可持续的技术，以消除大范围的 土壤中的全氟辛烷磺酸。此外，该项目的发现将有助于更好地理解网络管理如何 植物-土壤系统中的污染物，可转化为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。 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