Investigation of OECD 301F ready biodegradability test to evaluate chemical fate in a realistic environment
| Autor: | Saki Takekoshi, Masayuki Sato, Akira Tachibana, Yoshihide Matoba, Kotaro Takano |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Inert Silica gel Health Toxicology and Mutagenesis Chemical fate Regular Article 010501 environmental sciences Biodegradation Pulp and paper industry 01 natural sciences 010602 entomology chemistry.chemical_compound Activated sludge chemistry Volume (thermodynamics) Insect Science Environmental science Sewage treatment 0105 earth and related environmental sciences |
| Zdroj: | J Pestic Sci |
| ISSN: | 1348-589X |
| Popis: | The OECD 301F ready biodegradability test has been approved for use under the Japanese Chemical Substances Control Law since 2018. This test uses activated sludge obtained from a sewage treatment plant instead of the standard activated sludge used for the 301C test. In addition, the test is allowed to add an inert support or emulsifying agent, and/or to change the volume of the test medium. In this study, we first confirmed that the standard sludge had lower biodegradation activities than the sludge taken from a sewage treatment plant. Second, we showed that biodegradation percentages were increased by adding suitable amounts of silica gel or Tween 80. Third, we found that the biodegradations were accelerated by only increasing the medium volume under the conditions that concentrations of chemical, silica gel, and sludge were held constant. These findings are expected to contribute to the appropriate evaluation of chemical fate in a realistic environment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|