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Direct linkFilgueiras, Matheus Fernandes; de Jesus, Paulo Cesar; Borges, Endler Marcel – Journal of Chemical Education, 2021
The Griess assay is widely used by regulation agencies as an official method for nitrite quantification in water and food samples. In Brazil, the official method, which has been used to determine nitrite in food, was described by Instituto Adolfo Lutz (283/IV) in 1984. It uses 8 mL of reactants and provides 50 mL (reactants plus sample) of waste…
Descriptors: Science Instruction, Water, Food, Science Experiments
Ramm, Julia G.; Dorscheid, Gabryel L.; Passos, Camila. G.; Sirtori, Carla – Journal of Chemical Education, 2018
The general objective of this study was to analyze the development and implementation process of a waste management project (WMP) at a public school in the city of Porto Alegre in the state of Rio Grande do Sul, Brazil, that offers a course for chemistry technicians. To that end, an initial diagnostic analysis of the commonly produced waste from…
Descriptors: Program Development, Wastes, Sanitation, Science Instruction
