Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City, 807, Taiwan.
Department of Medicinal and Applied Chemistry, Kaohsiung Medical University (KMU), Kaohsiung City, 807, Taiwan; Research Center for Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital (KMUH), Kaohsiung City, 807, Taiwan; Department of Chemistry, National Sun Yat-sen University (NSYSU), Kaohsiung City, 807, Taiwan.
Chemosphere. 2021 Mar;267:129274. doi: 10.1016/j.chemosphere.2020.129274. Epub 2020 Dec 11.
Parahydroxybenzoates (parabens) are considered as emerging environmental contaminants because of their extensive usage in our daily life products, causing parabens contamination into environmental water systems and lead to toxic effects on environmental health. This study describes a greener extraction method using a new cationic polymer poly (ethyleneimine) functionalized acid-treated carbon nanofibers (PEI-CNFs) coated cellulose paper (CP) as solid-phase extraction (SPE) sorbent material for the extraction of parabens from environmental water samples. The fabrication of PEI-CNFs modified CP was confirmed using field-emission scanning electron microscope, transmission electron microscopy, and fourier-transformer infrared spectroscopy techniques. Various factors affecting the adsorption and desorption of parabens on PEI-CNFs@CP and its extraction efficiencies were studied using HPLC-UV analysis. Under the optimal experimental conditions, maximum extraction efficiencies were achieved for four target parabens, and PEI-CNFs@CP/HPLC-UV method exhibited excellent linearities ranged from 0.5-50 ng mL with regression coefficient values were between 0.9952-0.9970. The presented method showed good sensitivity with quantification limits between 0.5-0.75 ng mL and detection limits between 0.1-0.25 ng mL. The developed technique was applied for the real sample analysis (river, lake, domestic sewage water, and drinking tap water). The spiked recovery revealed good recoveries between 86.8-116.0% with RSD less than 8.8% for all the water samples. These results proved that it a simple, fast, efficient, low-cost, and eco-friendly method for the extraction and determination of parabens in environmental water samples and can be applied as a routine analytical tool in environmental monitoring and quality control laboratories.
对羟基苯甲酸酯（parabens）因其在日常生活产品中的广泛使用而被认为是新兴的环境污染物，这导致对羟基苯甲酸酯污染了环境水系，并对环境健康造成了毒性影响。本研究描述了一种使用新型阳离子聚合物聚乙烯亚胺（PEI）功能化酸处理的碳纳米纤维（PEI-CNFs）涂覆纤维素纸（CP）作为固相萃取（SPE）吸附剂材料的绿色提取方法，用于从环境水样中提取对羟基苯甲酸酯。使用场发射扫描电子显微镜、透射电子显微镜和傅里叶变换红外光谱技术证实了 PEI-CNFs 改性 CP 的制备。使用 HPLC-UV 分析研究了影响对羟基苯甲酸酯在 PEI-CNFs@CP 上的吸附和解吸及其萃取效率的各种因素。在最佳实验条件下，四种目标对羟基苯甲酸酯的最大萃取效率均得到实现，并且 PEI-CNFs@CP/HPLC-UV 方法表现出优异的线性度，范围为 0.5-50ngmL，回归系数值在 0.9952-0.9970 之间。该方法表现出良好的灵敏度，定量限在 0.5-0.75ngmL 之间，检测限在 0.1-0.25ngmL 之间。所开发的技术已应用于实际样品分析（河流、湖泊、生活污水和饮用水龙头水）。加标回收率显示，所有水样的回收率均在 86.8-116.0%之间，RSD 小于 8.8%。这些结果证明，该方法简单、快速、高效、低成本且环保，可用于环境水样中对羟基苯甲酸酯的提取和测定，并可作为环境监测和质量控制实验室中的常规分析工具。
