“…Functional bio-recognition elements are the key components, which define the affinity (low detection limit), specificity (low interference), dynamic range, response time and lifetime of the biosensing system. Although, currently most of the developed biosensor-based methods are not able to compete with traditional methods in terms of precision or reproducibility, they offer the opportunity of continuous on-site and real-time monitoring of a contamination and may provide timely information about potential contamination (Kivirand & Rinken 2019) (Fig. 1).…”