RANCANG BANGUN DAN UJI KINERJA SISTEM DETEKSI FORMALIN PADA IKAN MENGGUNAKAN SENSOR MQ-138 BERBASIS ARDUINO. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 9, n. 2, p. 1514–1518, 2026. DOI: 10.54314/pkddvr88. Disponível em: https://jurnal.goretanpena.com/index.php/JSSR/article/view/5928.. Acesso em: 28 apr. 2026.