Quintanilla Ivonne, Perelló Carlos, Merlo Francesca, Profumo Antonella, Fontàs Clàudia, Anticó Enriqueta
Department of Chemistry, Universitat de Girona, C/Maria Aurèlia Capmany 69, 17003 Girona, Spain.
Department of Chemistry, University of Pavia, Via Taramelli 12, 27100 Pavia, Italy.
Polymers (Basel). 2023 Jan 7;15(2):314. doi: 10.3390/polym15020314.
It is essential to monitor organic pollutants to control contamination levels in environmental water bodies. In this respect, the development of new materials based on functionalised polymeric films for the measurement of toxic compounds is of interest. In this study, we prepare new films based on polymer cellulose triacetate modified with multi-walled carbon nanotubes for the monitoring of selected compounds: a fungicide (chlorpyrifos) and two emerging contaminants, the musk tonalide and the bactericide triclosan, which are used in the formulation of personal care products. The films, upon contact with water samples and following the principles of thin film microextraction, allow the determination of organic pollutants at low concentration levels. The contact time of the film with a predetermined volume of water is fixed at 60 min, and the compounds are eluted with a small volume (1 mL) of organic solvent for GC-MS analysis. Parameters such as repeatability for different films and detection limits are found to be satisfactory. Applying the method to river water demonstrates its suitability and, in the cases of chlorpyrifos and tonalide, the absence of a significant matrix effect.
监测有机污染物以控制环境水体中的污染水平至关重要。在这方面，开发基于功能化聚合物薄膜的新材料用于测量有毒化合物很有意义。在本研究中，我们制备了基于用多壁碳纳米管改性的三醋酸纤维素聚合物的新型薄膜，用于监测选定的化合物：一种杀菌剂（毒死蜱）以及两种新兴污染物，即用于个人护理产品配方中的麝香酮和杀菌剂三氯生。这些薄膜在与水样接触并遵循薄膜微萃取原理后，能够测定低浓度水平的有机污染物。薄膜与预定体积水的接触时间固定为60分钟，然后用少量（1毫升）有机溶剂洗脱化合物用于气相色谱 - 质谱分析。发现不同薄膜的重复性和检测限等参数令人满意。将该方法应用于河水表明了其适用性，并且在毒死蜱和麝香酮的情况下，不存在显著的基质效应。
