A poly(o‐phenylenediamine) coated aluminum garter spring micro-solid phase extractor for pyrethroids in chili

• Published in: Food chemistry 2024-02, Vol.434, p.137430-137430, Article 137430
• Main Authors: Lumlong, Kednipa, Siritham, Charinrat, Mak, Wing Cheung, Kanatharana, Proespichaya, Thavarungkul, Panote, Thammakhet-Buranachai, Chongdee
• Format: Article
• Language: English
• Subjects: aluminum; bifenthrin; curry; cyfluthrin; cypermethrin; deltamethrin; fenpropathrin; food chemistry; gas chromatography; lambda-cyhalothrin; permethrin; pyrethrins; sorbents; spring
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2023.137430

An aluminum garter spring coated with poly(o‐phenylenediamine) (PoPD) was developed as a sorbent for the micro‐solid phase extraction of seven pyrethroids, bifenthrin, fenpropathrin, lambda‐cyhalothrin, cyfluthrin, permethrin, cypermethrin and deltamethrin from fresh chili, chili flakes, and curry pastes. The extraction was qualified and quantified by a gas chromatograph coupled with an electron capture detector. Under optimum conditions, the linearity was at a concentration range of 10-3000 µg kg⁻¹. The limits of detection and limits of quantitation of 9.3 to 34.2 μg kg⁻¹, and 11.8 to 48.6 μg kg⁻¹, respectively, were obtained with good sorbent-to-sorbent reproducibility, and outstanding reusability. When applied to determine the seven pyrethroids in chili samples, some pyrethroids were detected up to 30.3 ± 1.2 μg kg⁻¹. This proposed method is simple, with potential applications in the trace analysis of other compounds.