Repozytorium publikacji - Politechnika Gdańska

A hierarchical porouscomposite magnetic sorbent was fabricated and applied tothe dispersive solvent-assisted solid-phase extraction of five polycyclic aromatichydrocarbons. A sorbent was first prepared by incorporating graphene oxide,calcium carbonate, and magnetite nanoparticles into a polyvinyl alcohol cryo-gel. The graphene oxide was converted to reduced graphene oxide using ascorbicacid and a hierarchical porous structure was produced by reacting hydrochlo-ric acid with incorporated calcium carbonate to generate carbon dioxide bubbleswhichcreatedasecondnetwork.Beforeextractingthetargetanalytes,theextrac-tion solvent was introduced into the hierarchical pore network of the sorbent.The extraction was based on the partition between the analytes and introducedextraction solvent and the adsorption of analytes on reduced graphene oxide.Theextraction efficiency was enhanced through π-π and hydrophobic interactionsbetween polycyclic aromatic hydrocarbons and reduced graphene oxide andextraction solvent. The extracted polycyclic aromatic hydrocarbons were deter-mined by using high-performance liquid chromatography coupled with a fluo-rescence detector. The developed method was applied to extract polycyclic aro-matic hydrocarbons in disposable diaper, coffee, and tea samples and recoveriesfrom 84.5 to 99.4% were achieved with relative standard deviations below 7%.The developed sorbent exhibited good reproducibility and could be reused for 10cycles.The developed sorbent exhibited good reproducibility and could be reusedfor 10 cycles.The developed sorbent exhibited good reproducibility and could bereused for 10 cycles.

Autorzy

• Natnaree Rattanakunsong,
• Sirintorn Jullakan,
• dr hab. inż. Justyna Płotka-Wasylka link otwiera się w nowej karcie ,
• Opas Bunkoed