Akademik Veri Yönetim Sistemi
6th INTERNATIONAL CONGRESS on ANALYTICAL and BIOANALYTICAL CHEMISTRY, Antalya, Türkiye, 26 - 29 Mart 2026, ss.24, (Özet Bildiri)
Qualitative or quantitative determination of certain analytes present at low concentrations in food, environmental, and biological samples is of importance for the environment and public health. To determine the selected analyte at sufficiently low concentrations using conventional techniques such as gas or liquid chromatography, certain pre-separation and concentration techniques are required. Sample preparation before instrumental analysis is one of the most important and critical steps. The main objectives of sample preparation methods are (1) separation of the analyte from the matrix medium and/or (2) enrichment of the analyte at low concentrations. One of the methods frequently used in analytical applications for this purpose is the solid-phase extraction (SPE) method. SPE is a well-known sample preparation technique, which allows for isolation of the analytes from the sample or removal of the interferents from the matrix without using huge amounts of organic solvents. One of the major advantages of SPE technique is the availability of wide range of different materials. In addition to commercially available sorbents such as silicabased sorbents (modified with C8, C18, -phenyl, -NH2 and –CN groups), carbon-based sorbents (graphitized carbon black, porous graphitic carbon) and porous polymeric sorbents, which are commonly used in the SPE method, numerous studies have been reported in recent years on the synthesis of micro or nano-sized sorbents with superior properties (selectivity, affinity and increased surface area, removal of sorbent by application of magnetic field, etc.) and their use as SPE materials, in parallel with developments in materials science1 . The common aim of these studies is to achieve better reproducibility and selectivity in analyte determination, to reach lower detection limits, and to reduce costs by reusing the sorbent without losing its effectiveness2 . Many pollutants that threaten the environment and human health (endocrine disruptors, antibiotics, etc.) can be successfully determined by chromatographic techniques by enriching them in the sample preparation step with SPE procedures applied with new generation sorbents. Because, there is still a huge interest in searching for new materials characterized by high selectivity and capacity, which could provide an alternative to typical ones used in SPE. The basic principles of SPE as well as current and possible future applications in Analytical Chemistry will be presented and briefly discussed during the lecture.