A Fluorescent Probe Based on Carbazole and Benzoindole for On‐Site Detection of Sulfite
Sulfites are widely used as preservatives and antioxidants in food, but excessive intake poses health risks. Therefore, rapid, sensitive, and on‑site detection of sulfites is essential for food safety. In this work, a cationic small‑molecule fluorescent probe was synthesized via the condensation of N ‑ethylcarbaz...