Bis-indolylmethane Derivatives as A Potential Colorimetric Sensor for Chromium Ion Detection in Water. Borneo Engineering & Advanced Multidisciplinary International Journal, [S. l.], v. 3, n. 3, p. 10–16, 2025. Disponível em: https://beam.pmu.edu.my/index.php/beam/article/view/182.. Acesso em: 12 aug. 2025.