Chitosan-glutaraldehyde graphene oxide aerogel for extraction of polybrominated and -chlorinated carbazoles in lotus
Yanke Lu1, Pengfei Li1, Liuliu Cheng1
1Hebei Key Laboratory of Analytical Science and Technology, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China.
Abstract:
Halogenated carbazoles (HCZs) are prevalent in sediments, pose a risk of entering the human food chain via lotus roots. However, starch, protein, and fat in lotus root complicate determination of HCZs in this food. This study introduces a straightforward, sensitive, and rapid method for detecting four HCZs in lotus roots. The method employs a conical monolithic extraction column (MEC) containing chitosan-glutaraldehyde-graphene oxide aerogel (CS-GA-GOA) material. The CS-GA-GOA - MEC successfully achieved extraction of four HCZs in spiked lotus root samples in under 5 min. The method was rapid (15 min) compared with alternatives, as well as being sensitivity (0.08-0.27 ng/g), accurate (89.7 %-104.2 %), and more cost-effective. This work contributes to the exploration of advanced adsorbents but also broadens the applicability of graphene oxide aerogels in extraction processes, paving the way for the development of rapid and accurate analytical methods for HCZs in foods.
