Biodegradation tests of mercaptocarboxylic acids, their esters, related divalent sulfur compounds and mercaptans
| Autor: | Klaus Kümmerer, Dirk Schwartz, Christoph Rücker, Waleed M. M. Mahmoud |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Sh groups
Health Toxicology and Mutagenesis Carboxylic acid Carboxylic Acids Manometric Respirometry Test chemistry.chemical_element 010501 environmental sciences 01 natural sciences Divalent Hydrolysis Respirometry chemistry.chemical_compound Biodegradation rules of thumb Mercaptans Difunctional compounds Environmental Chemistry Organic chemistry Disulfides Sulfhydryl Compounds Mercaptocarboxylic acids 0105 earth and related environmental sciences Biological Oxygen Demand Analysis chemistry.chemical_classification 010405 organic chemistry Chemistry Closed Bottle Test Reproducibility of Results Esters Mercaptocarboxylic acid esters General Medicine Models Theoretical Biodegradation Pollution Sulfur Ready biodegradability tests Aerobiosis 0104 chemical sciences Biodegradation Environmental Functional group Oxidation-Reduction Water Pollutants Chemical Research Article |
| Zdroj: | Rücker, C, Mahmoud, W M M, Schwartz, D & Kümmerer, K 2018, ' Biodegradation tests of mercaptocarboxylic acids, their esters, related divalent sulfur compounds and mercaptans ' Environmental Science and Pollution Research, vol 25, no. 19, pp. 18393-18411 . DOI: 10.1007/s11356-018-1812-x Environmental Science and Pollution Research International Rücker, C, Mahmoud, W M M, Schwartz, D & Kümmerer, K 2018, ' Biodegradation tests of mercaptocarboxylic acids, their esters, related divalent sulfur compounds and mercaptans ', Environmental Science and Pollution Research, vol. 25, no. 19, pp. 18393-18411 . https://doi.org/10.1007/s11356-018-1812-x |
| DOI: | 10.1007/s11356-018-1812-x |
| Popis: | Mercaptocarboxylic acids and their esters, a class of difunctional compounds bearing both a mercapto and a carboxylic acid or ester functional group, are industrial chemicals of potential environmental concern. Biodegradation of such compounds was systematically investigated here, both by literature search and by experiments (Closed Bottle Test OECD 301D and Manometric Respirometry Test OECD 301F). These compounds were found either readily biodegradable or at least biodegradable to a significant extent. Some related compounds of divalent sulfur were tested for comparison (mercaptans, sulfides, disulfides). For the two relevant monofunctional compound classes, carboxylic acids/esters and mercaptans, literature data were compiled, and by comparison with structurally similar compounds without these functional groups, the influence of COOH/COOR’ and SH groups on biodegradability was evaluated. Thereby, an existing rule of thumb for biodegradation of carboxylic acids/esters was supported by experimental data, and a rule of thumb could be formulated for mercaptans. Concurrent to biodegradation, abiotic processes were observed in the experiments, rapid oxidative formation of disulfides (dimerisation of monomercaptans and cyclisation of dimercaptans) and hydrolysis of esters. Some problems that compromise the reproducibility of biodegradation test results were discussed. Electronic supplementary material The online version of this article (10.1007/s11356-018-1812-x) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
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