Title: Superhydrophobic Nanosilica Decorated Electrospun Polyethylene Terephthalate Nanofibers for Headspace Solid Phase Microextraction of 16 Organochlorine Pesticides in Environmental Water Samples
Journal: Polymers
Author: 1.Hamid Najarzadekan, 1.Hassan Sereshti 2.Irfan Ahmad,3.Syed Shahabuddin 4.Hamid Rashidi Nodeh and 5.Nanthini Sridewi
Year: 2022
Address: 1.School of Chemistry, College of Science, University of Tehran, Tehran 1417614411, Iran 2.Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia 3.Department of Chemistry, School of Technology, Pandit Deendayal Energy University, Raisan 382426, Gujarat, India 4.Food Technology and Agricultural Products Research Center, Standard Research Institute, Karaj 3174734563, Iran 5.Department of Maritime Science and Technology, Faculty of Defence Science and Technology, National Defence University of Malaysia, Kuala Lumpur 57000, Malaysia
Abstract: A new solid phase micro extraction (SPME) fiber coating composed of electrospun polyethylene terephthalate (PET) nanofibrous mat doped with superhydrophobic nanosilica (SiO2) was coated on a stainless-steel wire without the need of a binder. The coating was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectrometer (FTIR) techniques and it was used in headspace-SPME of 16 organochlorine pesticides in water samples prior to gass chromatography micro electron capture detector (GC-µECD) analysis. The effects of main factors such as adsorption composition, electrospinning flow rate, salt concentration, extraction temperature, extraction time, and desorption conditions were investigated. Under the optimum conditions, the linear dynamic range (8–1000 ng L−1, R2 > 0.9907), limits of detection (3–80 ng L−1), limits of quantification (8–200 ng L−1), intra-day and inter-day precisions (at 400 and 1000 ng L−1, 1.7–13.8%), and fiber-to-fiber reproducibility (2.4–13.4%) were evaluated. The analysis of spiked tap, sewage, industrial, and mineral water samples for the determination of the analytes resulted in satisfactory relative recoveries (78–120%).
Keywords: electrospun nanofibers; polyethylene terephthalate; superhydrophobic nanosilica; solid-phase microextraction; organochlorine pesticides
Application: Extraction
Product Model 1: Electroris
Product Model 2: Syringe Pump
URL: #https://www.mdpi.com/2073-4360/14/17/3682#