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Novel ultrasound assisted extraction and d-SPE clean-up for the analysis of multiple legacy and emerging organic contaminants in edible fish
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Researchers developed a rapid ultrasound extraction method paired with dispersive solid-phase extraction cleanup that simultaneously detects PCBs, flame retardants, and phthalate esters in edible fish, reducing extraction time by up to 80% and solvent use by up to 97% compared to conventional techniques while validating performance on Mediterranean Sea samples.
Polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), novel brominated flame retardants (NBFRs), phthalate esters (PAEs) are pervasive environmental pollutants, posing threats to both ecosystems and human health. Although several analytical methods were developed for these compounds, they are not performed simultaneously. This study addresses the need for a sustainable, novel, analytical approach capable of simultaneously determining these diverse chemical classes in edible fish muscles. Employing ultrasound extraction coupled with dispersive solid-phase extraction (d-SPE) as a cleanup procedure, the method was compared to conventional techniques, revealing significant improvements. Analytical parameters were thoroughly assessed, and the innovative method demonstrated notable advantages, reducing extraction and purification times by approximately 74-80 % and solvent consumption by around 94-97 %. Applied to Mediterranean Sea fish samples, the results underscore the method's potential as a viable, sustainable alternative to traditional approaches, promising enhanced efficiency and reduced environmental impact.
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Researchers developed an efficient analytical method to detect 25 emerging organic pollutants from the EU Watch List that can be adsorbed onto microplastics in the environment. Using ultrasound-assisted extraction and advanced mass spectrometry, the method achieved high precision in identifying these contaminants on plastic debris. The findings confirm that microplastics act as carriers for various harmful chemicals in aquatic environments.
Present Trends in Analytical Methods for Determination of Multi-groups Environmental Contaminants Polyaromatic Hydrocarbons, Phthalates, Alkylphenol Ethoxylates, Alkylphenols, and Butylated Hydroxytoluene in River Sediments
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This review examines analytical methods for simultaneously detecting multiple classes of environmental contaminants—including PAHs, phthalates, alkylphenols, and BHT—in river sediments, highlighting emerging extraction techniques such as QuEChERS and microwave-assisted extraction as promising approaches that reduce solvent use and increase laboratory throughput.
Analiza polikloriranih bifenilov adsorbiranih na plastičnih granulatih: primerjava ekstrakcijskih tehnik
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This thesis developed and compared four methods for extracting polychlorinated biphenyls (PCBs) from marine plastic resin pellets, finding that pressurized fluid extraction (PFE) offered the best efficiency and repeatability compared to Soxhlet, ultrasonication, and maceration approaches. The work provides a reliable protocol for measuring the toxic organic pollutants that plastic pellets accumulate in ocean environments.
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