Development of an iron-metal organic Framework-based dispersive solid phase extraction coupled with flame atomic absorption spectrophotometry for the accurate and sensitive determination of copper in lion's claw tea samples

Teki̇n Semerci Z., Karakebap K. Ü., Nur Karaman D., Yilmaz E., DALGIÇ BOZYİĞİT G., Er E. Ö., ...Daha Fazla

Analytical Methods, 2025 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1039/d5ay00272a
  • Dergi Adı: Analytical Methods
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Biotechnology Research Abstracts, CAB Abstracts, Compendex, EMBASE, Food Science & Technology Abstracts, MEDLINE, Veterinary Science Database
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

An iron-based metal organic framework (Fe-MOF) constructed using terephthalic acid as an organic linker was synthesized and characterized for its implementation in a dispersive solid-phase extraction (dSPE) procedure. This strategy was combined with a flame atomic absorption spectrophotometry (FAAS) system and employed for the preconcentration and trace level detection of copper in lion's claw tea samples. Under optimal conditions, the Fe-MOF based dSPE-FAAS method achieved a limit of detection (LOD) of 2.0 μg L−1 and a limit of quantification (LOQ) of 6.7 μg L−1. The determination coefficient (R2) was found to be 0.9984 for the concentration range of 5.0-100 μg L−1, indicating superior linearity for the developed Fe-MOF-dSPE-FAAS method. The sensitivity was enhanced by 88.2 folds. Moreover, acceptable recovery percentages at five different spiked levels within the concentration range of 7.5-75 μg L−1 for the lion's claw tea sample matrix were achieved through the application of a matrix matching strategy.