Optimization of Nitrogen-Doped Carbon Dots from Tea Waste (Camellia sinensis) and Its Application for Metal Ion Sensing . CHEMSUKA [Internet]. 2025 Apr. 8 [cited 2026 Apr. 23];2(1):1-16. Available from: https://ejournal.uin-suka.ac.id/saintek/chemsuka/article/view/6140