Resumo

DE SOUSA, Cristina et al. Proposals for improving the handling of hazardous substances in laboratories at the Department of Biology, Faculty of Science and Technology, Carabobo University. Bol Mal Salud Amb [online]. 2014, vol.54, n.2, pp.220-235. ISSN 1690-4648.

The aim of this study was to propose ways to ensure the correct handling of hazardous substances in laboratories at the Department of Biology, Faculty of Science and Technology, Carabobo University. Both documentary and field data were collected. The survey was completed in four months and consisted of interviews, questionnaires and sampling. A total of 54 students, and one technician and one professor for each laboratory were surveyed. Samples were taken of all effluents and these were characterized before and after physiochemical treatments were implemented (chemical oxidation to remove BDO and CDO) when applicable. The laboratories surveyed did not follow pre-set procedures for the handling of hazardous substances, which should be manipulated according to the provisions of the current legislation (Decree No. 2635). In addition, the concentrations of some of the effluents were higher than the maximum permitted limits for discharge into the sewage system according to Decree No 883. The handling of hazardous substances could be greatly improved by: refurbishing the waste reservoir, drawing up safety data sheets, labelling chemical substances, the use of adequate signage within the facilities, incinerating waste materials stored in the designated warehouse and the reuse of formaldehyde and ethanol.

Palavras-chave : handling plan; hazardous substances; characterization; waste materials; treatment.

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