(Eco)toxicity and biodegradability of protic ionic liquids
| Autor: | Rita de Cássia Mendonça de Miranda, Álvaro S. Lima, Maria Vanessa Souza Oliveira, João A. P. Coutinho, Cleide Mara Faria Soares, Silvana Mattedi, Sónia P. M. Ventura, Bruna T. Vidal, Cláudia Moura de Melo |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Biochemical oxygen demand
Antifungal Agents Luminescence Health Toxicology and Mutagenesis Microorganism Ionic Liquids 02 engineering and technology Antimicrobial activity 01 natural sciences TOXICITY chemistry.chemical_compound PYRIDINIUM Fusarium Candida albicans Organic chemistry Aliivibrio fischeri IMIDAZOLIUM chemistry.chemical_classification biology Chemical oxygen demand General Medicine Lettuce 021001 nanoscience & nanotechnology Antimicrobial Pollution 6. Clean water Anti-Bacterial Agents Biodegradability ANTIMICROBIAL ACTIVITIES Biodegradation Environmental Protic ionic liquids Toxicity evaluation 0210 nano-technology Staphylococcus aureus Environmental Engineering Microtox FISCHERI MARINE-BACTERIA 010402 general chemistry PHASE-BEHAVIOR ANION Escherichia coli Environmental Chemistry TERRESTRIAL ECOTOXICITY ALLIUM-CEPA Biological Oxygen Demand Analysis Public Health Environmental and Occupational Health General Chemistry Biodegradation biology.organism_classification 0104 chemical sciences Quaternary Ammonium Compounds chemistry PHYSICOCHEMICAL PROPERTIES Phytotoxicity Ionic liquid Propionate |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Ionic liquids (ILs) are often claimed to be \"environmentally friendly\" compounds however, the knowledge of their potential toxicity towards different organisms and trophic levels is still limited, in particular when protic ionic liquids (PILs) are addressed. This study aims to evaluate the toxicity against various microorganisms and the biodegradability of four PILs namely, N-methyl-2-hydroxyethylammonium acetate, m-2-HEAA; N-methyl-2-hydroxyethylammonium propionate, m-2-HEAPr; N-methyl-2-hydroxyethylammonium butyrate, m-2-HEAB; and N-methyl-2-hydroxyethylammonium pentanoate, m-2-HEAP. The antimicrobial activity was determined against the two bacteria, Sthaplylococcus aureus ATCC-6533 and Escherichia coli CCT-0355; the yeast Candida albicans ATCC-76645; and the fungi Fusarium sp. LM03. The toxicity of all PILs was tested against the aquatic luminescent marine bacterium Vibrio fischeri using the Microtox (R) test. The impact of the PILs was also studied regarding their effect on lettuce seeds (Lactuta sativa). The biodegradability of these PILs was evaluated using the ratio between the biochemical oxygen demand (BOD) and the chemical oxygen demand (COD). The results show that, in general, the elongation of the alkyl chain tends to increase the negative impact of the PILs towards the organisms and biological systems under study. According to these results, m-2-HEM and m-2-HEAP are the less and most toxic PILs studied in this work, respectively. Additionally, all the PILs have demonstrated low biodegradability. (C) 2016 Published by Elsevier Ltd. |
| Databáze: | OpenAIRE |
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