Development of Hg²⁺ sensor based on N′-[1-(pyridin-2-yl)ethylidene]benzenesulfono-hydrazide (PEBSH) fabricated silver electrode for environmental remediation

<italic>N</italic>′-[1-(Pyridin-2-yl)ethylidene]benzenesulfonohydrazide (PEBSH) was synthesized <italic>via</italic> a simple condensation of 2-acetyl pyridine and benzene sulfonyl hydrazide in very good yield and crystallized, and then used in the formation of a Hg²⁺ sensor.