Disposable electrochemical sensor modified with gold nanostructures for rapid and eco-friendly nitrite detection in tap water: From fabrication to robust analytical validation - Paiva, João Vitor Fernandes; Azevedo, Daniel A. de; Romanholo, Pedro V. V; Machado, Sergio Antonio Spinola; Felsner, Maria Lurdes; Galli, Andressa; Sgobbi, Livia Flório (Microchemical Journal, 2026)