Activated carbon from green walnut shells as the adsorbent for the solid-phase extraction of indigo carmine from food and textiles

Instrumentation Science & Technology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 15

Published: June 20, 2024

Activated carbon from green walnut shells was synthesized; characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and with energy dispersive x-ray analysis (SEM-EDX); used as an adsorbent for the separation preconcentration of indigo carmine. The pH, mass, sample volume, foreign ion effect, eluent type, volume were optimized. factor 20.0 enrichment 19.68. developed SPE method provided a limit detection 40.8 µg L−1 quantification 136.1 L−1. analyte recoveries 92 to 102%. intra-day inter-day relative standard deviations 3.2% 3.8%. protocol employed separation, preconcentration, spectrophotometric determination carmine in water, candies, hair dyes, edible cake decorations, fruit juices, textiles.

Language: Английский

Cellulose- supported sulfated-magnetic biocomposite produced from hemp biomass: Effective removal of cationic dyes from aqueous solution

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 257, P. 128747 - 128747

Published: Dec. 14, 2023

Language: Английский