Do Thi Hang and Vo Thi Huong 2026. SIMULTANEOUS DETERMINATION FOR THE QUANTIFICATION OF FORMALDEHYDE IN TOFU BY ULTRAVIOLET-VISIBLE SPECTROSCOPY . HUIT Journal of Science. 26, 1 (Feb. 2026), 81–89. DOI:https://doi.org/10.62985/j.huit_ojs.vol26.no1.392.