Browsing by Author "Grossinho, José"
Now showing 1 - 10 of 10
Results Per Page
Sort Options
- O Ambiente Influencia A Minha Rica saúde?Publication . Júlio, Cláudia; Costa Ferreira, Filipa; Reyan, Iryna; Grossinho, José; José, Sílvia; Cruz Nogueira, Ana; Pires, Ana Filipa; Cano, Manuela; Jordão, Maria Luísa; Rebelo, HelenaCiclo de quatro palestras sobre os contaminantes químicos, incluindo os microplásticos, e microbiológicos do ar e das águas, seguidas de exposições interativas de equipamentos, materiais e amostras. Debates e questionário com a ferramenta Kahoot para avaliar o impacto das palestras na sensibilização dos alunos para os diversos temas.
- Avaliação da qualidade da água de piscinas: estudo de alguns parâmetros bacteriológicos e físico-químicosPublication . Rebelo, Helena; Rodrigues, Raquel; Grossinho, José; Almeida, Cristina; Silva, Manuela; Silva, Cecília; Costa, Clélia
- Monitorização de formaldeído (HCHO) em amostras de água: avaliação de eventuais riscos para a saúde publica decorrentes da exposição a este compostoPublication . José, Sílvia S.; Grossinho, José; Rebelo, HelenaA literatura descreve para o formaldeído diversos efeitos nefastos para a saúde. Contudo, não existe, até ao momento, uma limitação legal quanto ao teor máximo admissível em uma água. Pretende-se com este estudo avaliar a eventual presença e aferir os níveis de formaldeído em amostras de água de diversas origens. Das 107 amostras de água analisadas, apenas duas revelaram a presença deste composto, uma amostra de água de processo com uma concentração de 0,087 mg/L e uma amostra de água de piscina com 0,058 mg/L. Dado que não existe um valor paramétrico definido legalmente, a interpretação dos resultados baseou-se na Norma NSF/ANSI 60 - 2016 que admite uma concentração máxima admissível de formaldeído em água de 1 mg/L. Face aos resultados obtidos e por se tratar de um composto indesejável devido ao risco para a saúde, considera-se de todo o interesse a sua monitorização em amostras de água destinadas ao consumo humano de modo a avaliar a eventual exposição e consequente risco para a saúde publica.
- Occurrence of persistent organic pollutants at Alqueva's surface water at touristic spotsPublication . Raposo, Ana; Mansilha, Catarina; Veber, Alexander; Melo, Armindo; Rodrigues, Joao; Matias, Rui; Rebelo, Helena; Grossinho, José; Cano, Manuela; Almeida, Cristina; Nogueira, IsabelFreshwater pollution is a huge concern. A study aiming to evaluate water quality and occurence of two groups of persistent environmental pollutants with similar chemical properties (polycyclic aromatic hydrocarbons-PAHs and microplastics -MPs) in Alqueva’s surface water was performed during 2021. Samples were collected at three spots related to touristic activities (two beaches and one marina) once by season. In addition, we assessed and compared the presence of biofilms on plastic and natural materials. Water quality was acceptable with a low eutrophication level. PAHs concentration levels were lower than the standard limits established for surface waters. PAHs profiles showed significant differences when comparing the dry and rainy seasons, with a higher number of different compounds detected in Spring. Low molecular weight compounds, usually associated with the atmospheric deposition and petroleum contamination, were more prevalent. MPs were detected in all samples except one during Winter. Eight polymers were detected being polyethylene the most frequent. Plastics were more prone to biofilm colonization than natural materials. In addition, biofilms detected on plastics were more complex with higher microbial diversity and richer in EPS. Among microbiota were identified microorganisms previously linked to plastic and PAHs detoxification suggesting the need for further studies to evaluate the viability of using biofilms as part of a green bioremediation strategy to mitigate water pollution.
- Occurrence of polycyclic aromatic hydrocarbons, microplastics and biofilms in Alqueva surface water at touristic spotsPublication . Raposo, Ana; Mansilha, Catarina; Veber, Alexander; Melo, Armindo; Rodrigues, Joao; Matias, Rui; Rebelo, Helena; Grossinho, José; Cano, Manuela; Almeida, Cristina; Nogueira, Isabel D.; Puskar, Ljiljana; Schade, Ulrich; Jordão, LuisaFreshwater pollution is a huge concern. A study aiming to evaluate physico-chemical characteristics, microbiota, occurrence of two groups of persistent environmental pollutants with similar chemical properties (polycyclic aromatic hydrocarbons- PAHs and microplastics - MPs) in Alqueva's surface water was performed during 2021. Water samples were collected at three spots related to touristic activities (two beaches and one marina) during the Winter, Spring, Summer and Autumn seasons. In addition, the presence of biofilms on plastic and natural materials (stone, wood/ vegetal materials) were assessed and compared. Water quality based on physicochemical parameters was acceptable with a low eutrophication level. PAHs concentration levels were lower than the standard limits established for surface waters by international organizations. However, carcinogenic compounds were detected in two sampling locations, which can pose a problem for aquatic ecosystems. PAHs profiles showed significant differences when comparing the dry seasons with the rainy seasons, with a higher number of different compounds detected in Spring. Low molecular weigh compounds, usually associated with the atmospheric deposition and petroleum contamination, were more prevalent. MPs were detected in all samples except one during the Winter season. The polymers detected were poly(methyl-2-methylpropenoate), polystyrene, polyethylene terephthalate, polyamide, polypropylene, styrene butadiene, polyvinyl chloride and low /high density polyethylene with the last being the most frequent. Biofilms were more often detected on plastics than on natural materials. In addition, biofilms detected on plastics were more complex with higher microbial diversity (e.g., bacteria, fungi/yeast and phytoplancton organisms) and richer in extrapolymeric material. Based on morphological analysis a good agreement between microbiota and microorganism present in the biofilms was found. Among microbiota were identified microorganisms previously linked to plastic and PAHs detoxification suggesting the need for further studies to evaluate the viability of using biofilms as part of a green bioremediation strategy to mitigate water pollution.
- O papel do Instituto Nacional de Saúde Dr. Ricardo Jorge na avaliação e prevenção de riscos para a saúde pública: vigilância e controlo da qualidade da água e areiasPublication . José, Silvia; Valério, Elisabete; Menezes, Carina; Dias, Elsa; Ferreira, Filipa; Albergaria, Isabel; Grossinho, José; Jordão, Luisa; Silva, Manuela; Soares, Paula; Rodrigues, Raquel; Brandão, João; Rebelo, HelenaO papel do Instituto Nacional de Saúde Doutor Ricardo Jorge na avaliação e prevenção de riscos para a saúde pública (Vigilância e controlo da qualidade da água e areias).
- Parasitas - Monstros dentro de nósPublication . Júlio, Cláudia; Grossinho, JoséPalestra interativa sobre os principais parasitas - Cryptosporidium e Giardia - que podem ser veiculados pela água, efeitos na saúde e como evitar a contaminação.
- Pathogens in Ornamental and Recreational Waters: A Risk Assessment StudyPublication . Morgado, Patrícia I.; Rodrigues, Joao; Grossinho, José; Rebelo, Helena; Nogueira, Isabel; Jordão, LuisaOrnamental and recreational waters of easy access are quite attractive and can hide threats to human health. Here we evaluated, the microbiota of ornamental waters in a Lisbon park (1 year), as well as, the microbiota of two dams with nautical recreational activities and fluvial beach to assess the risk for human health. In the microbiota, we identified faecal indicator bacterium, E.coli, and other potential human pathogens such as A.baumannii, Aeromonas, E.cloacae, K.pneumoniae, Pseudomonas and Raoutella. The identification of known healthcare associated infections agents such as K. pneumoniae, as well as species of Pseudomonas (P.fluorescens, P.putida and P.oryzihabitans) that recently have been identified as etiological agents in immunosuppressed individuals is of particular relevance. The same bacterial species were isolated from biofilm and water suggesting the existence of an equilibrium between planktonic and biofilm organized bacteria. The role played by biofilm assembly on the emergence of antibiotic resistance is still ongoing for the isolated bacteria, as well as the possible interaction between water chemical composition and bacteria isolates. Potential pathogens (biofilm or planktonic) represent a significant cause of acute bacterial infections mainly in specific populations (paediatric and geriatric). These results support periodic control of ornamental water microbiota as a preventive messure.
- Quantificação de manganês na água por espectrofotometria de absorção molecularPublication . Manso Silva, Manuela; Grossinho, José; Moutinho Afonso, Beatriz; Rebelo, Helena
- A segunda vida da águaPublication . Costa Ferreira, Filiupa; Grossinho, JoséPalestra interativa de sensibilização à poupança de água. Exemplos de locais onde a água potável escasseia. Importância da reutilização da água. Qualidade da água, a barreira sanitária do cloro, análise bacteriológica.