Construction of the molecularly imprinted adsorbent based on shaddock peel biochar sphere for highly sensitive detection of ribavirin in food and water resources

• Published in: Environmental research 2023-11, Vol.236, p.116756-116756, Article 116756
• Main Authors: Chai, Jinyue, Zheng, Junlei, Tong, Yukui, Chai, Fang, Tian, Miaomiao
• Format: Article
• Language: English
• Subjects: Biochar; Boronate affinity; Molecularly imprinted polymers; Ribavirin
• ISSN: 0013-9351; 1096-0953
• DOI: 10.1016/j.envres.2023.116756

Ribavirin (RBV) that is not metabolically released into the environment can contaminate the environment and even make organisms resistant to it. Therefore, it is of great significance to establish a simple and effective method for adsorbing RBV in the environment. In this study, a novel biochar-based boronate affinity molecularly imprinted polymers (C@H@B-MIPs) were synthesized. This is the first time that shaddock peel biochar sphere was used as a carrier for specific recognition of RBV. The polymerization conditions were optimized and the binding properties of RBV were studied. Benefiting from the synergistic effect of boronate affinity and surface imprinting, the C@H@B-MIPs showed rapid equilibrium kinetics of 15 min, high adsorption capacity of 18.30 mg g-1, and excellent reusability for RBV. The linear range was 0.05–100 mg L-1, and the detection limit was 0.023 mg L-1. This method was triumphant applied to the selective adsorption of RBV in food and water resources with recovery rates of 81.4–97.7%. This study provides a practical platform for the manufacture of efficient biomass-based adsorbents. •The carbon in the shaddock peel is converted into carbon resource that can be reused.•The self-polymerization ability of APBA simplifies the imprinting process.•The adsorbent C@H@B-MIPs can be used for the enrichment ribavirin in complex samples.•The C@H@B-MIPs have stable adsorption properties and wide detection range.