▎ 摘　　要

NOVELTY - A modified electrode comprises laser-induced graphene and silver-trans-1,2-cyclohexanediaminetetraacetic acid (CyDTA) modified on its surface. USE - Modified electrode is used for detecting trivalent yttrium ions in water environment (claimed). ADVANTAGE - The modified electrode has increased surface area and reaction active site, enhanced conductivity, improved current response of about 15 times, which is more than an order of magnitude compared with the electrode before modification, improved hydrophilicity, wide linear range of 5μg/L to 10 mg/L, and excellent repeatability and stability, and is economically prepared by simple process, and capable of on-site real-time detection of yttrium(III) ion in the water to be detected. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for detecting yttrium(III) ions in water environment using the modified electrode.