▎ 摘　　要

NOVELTY - Method (M1) for determining and measuring deltamethrin involves measuring deltamethrin concentration amperometrically with a biosensor comprising acetylcholinesterase immobilized on a magnetic bead as a biorecognition element. USE - The method is useful for (a) determining and measuring deltamethrin in insects, or (b) immobilizing acetylcholinesterase to magnetic beads functionalized with protein G as the biorecognition element. The process is useful for preparing an amperometric biosensor (all claimed). ADVANTAGE - The method rapidly determines and measures deltamethrin in insects in a simple manner. The sensors are precise and easy to use. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) an acetylcholinesterase based amperometric biosensor; (2) a method (M2) for immobilizing acetylcholinesterase to magnetic beads functionalized with protein G as the biorecognition element; (3) a process for preparing an amperometric biosensor; and (4) a method (M3) for determining and measuring deltamethrin in insects.