PREECHABURANA P, SANGNUY S, AMLOY S. Paper-based colorimetric sensor for mercury ion detection using smartphone digital imaging. J Met Mater Miner [Internet]. 2023 Jun. 27 [cited 2024 May 9];33(2):81-7. Available from: https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/1653