A Green Approach to Ammonia Determination in Human Saliva Using Natural Reagent via Gas-Diffusion Flow-Injection Spectrophotometry. - Sulistyarti, Hermin; Putri, Lani Artana; Suryani, Vira; Retnowati, Rurini; Andayani, Ulfa; Mulyasuryani, Ani; Sulistyo, Erwin; Utama, Muhammad Mashuri (Journal of Analytical Chemistry, 2024)