▎ 摘　　要

NOVELTY - The chemically modified sensor has a main portion that includes a conductive carbonaceous material that is carbon black, carbon nanotubes, graphite, graphene or combination of carbon black, carbon nanotubes, graphite and graphene. Silver nanoparticles are obtained by a biogenic synthesis from a red, green or brown algae. Restrictions are not present on the use of other components, which contains metallic nanoparticles (NPMs) or metal oxide nanoparticles (NPOMs), inorganic complexes, and conductive polymers, quantities and proportions. A conductivity capacity of the material is guaranteed. USE - Chemically modified sensor for determination of metals. Can also be used for environmental, biological, food, pharmaceutical and fuel. ADVANTAGE - The sensor includes simplicity, fast preparation, easy handling and low cost since it allows the use of metallic nanoparticles that can be derived from algae. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram illustrating a preparation of chlorella extract.