Apr 1, 2004 · The headspace-solid phase microextraction GC-MS (HS-SPME-GC-MS) technique has already been successfully applied to the characterization of polymers and the identification of VOCs from expanded PS
The purge and trap technique (6040 C), applicable to both water and wastewater, can concentrate volatile organic compounds by bubbling an inert gas through a sample, collecting it in a sorbent trap, and then desorbing the compound for analysis. The extract may be analyzed by GC or GC/MS methods. Solid-phase microextraction (SPME) techniques for
Author: Anita Peterson, Ph.D. Enhanced Sorptive Extraction by TF-SPME Miniaturized and solventless sorptive extraction techniques like stir bar sorptive extraction (SBSE) and solid phase microextraction (SPME) have become common choices for sample extraction techniques in the past few decades. These techniques are simple to perform, do not require further concentration steps, are
preparation is solid-phase microextraction (SPME). It was invented by Pawliszyn and co-workers3,4 in 1989 in an attempt to redress limitations inherent in SPE and LLE. SPME integrates sampling, extraction, concentration and sample introduction into a single solvent-free step. Analytes in the sample are directly extracted and concentrated to the
The vials used for the preparation of breath samples for automated solid-phase microextraction–gas chromatography–mass spectrometry analysis are crimped with septa. These septa often emit specific volatile organic compounds (VOCs) confounding the measurement results of breath samples.
SPME is a solvent-less extraction procedure that involves the exposure of a coated fused silica fiber to a gaseous or liquid sample or the headspace above a liquid or solid sample. The fiber coating is typically an immobilized polymer, a solid adsorbent or a combination of the two. Published articles, many of which are referenced in our SPME
Oct 10, 2013 · Solid-phase microextraction (SPME) is a simple, fast, portable sampling and sample preparation method that uses smaller volumes of solvent and is solvent-free in some cases. Since its introduction in early 1990s [4], SPME has been developed in different types, including coated fibers and in-tube devices. Due to the fairly unspecific absorption
Soft silicone with clean formulation for minimal interference. Thinner seal suitable for solvent washing, solvent extraction, and solid phase microextraction (SPME) applications with some resealing. Not for direct headspace applications.
Jan 1, 2020 · Solid phase microextraction (SPME) is a solvent-free, cost-effective, robust, versatile, and high-throughput sample preparation technique. It integrates all steps of extraction, such as sampling, isolation, and analysis, into a single step.
Jul 13, 2016 · 1. Introduction. Introduced in the early 1990s, solid-phase microextraction (SPME) proved to be a simple, sensitive, time-efficient and solvent less sample preparation technique that established the basis for the development of many subsequent equilibrium-based methods [1], [2], [3].
Jan 1, 2018 · SPME Procedure. Approximately 50 mg of the solid sample was sealed in a 20-mL headspace glass vial with an aluminum-coated silicone rubber septum. The septum of the vial was pierced with the needle of the SPME device, and the fiber was exposed approximately 10 mm above the solid sample.
Dec 18, 2020 · A novel sample preparation method based on the use of the Arrow solid-phase microextraction device was used to extract and preconcentrate volatile organic compounds (VOCs) from milk samples prior to their determination by gas chromatography–mass spectrometry (GC-MS). The experimental parameters of the solid-phase microextraction (SPME) Arrow method were evaluated in terms of fiber type
Jan 11, 2023 · In this work, a solid-phase microextraction (SPME) Arrow method combined with comprehensive two-dimensional gas chromatography–mass spectrometry (GC × GC–MS) was developed for the elucidation of the volatile composition of honey samples. The sample preparation protocol was optimized to ensure high extraction efficiency of the volatile organic compounds (VOCs) which are directly associated
Solid phase microextraction (SPME) Solid phase microextraction (SPME) is a solvent-free sample preparation technology. Based on the principle of adsorption or absorption and desorption, SPME uses a coated fiber or Arrow to concentrate volatile and semivolatile compounds from a sample. In SPME, analytes establish equilibria among the sample
4.4.2.3 Headspace Solid-Phase Microextraction. HS-SPME appears to be an essential clean-up step of the procedure. To the hair extract in the headspace vials, 1 mL phosphate buffer (0.1 M, pH 7.4) and 0.5 g NaCl are added in order to retain free fatty acids from evaporation and to use the salting-out effect. However, it was shown that salt-free
