EGU21-10803
https://doi.org/10.5194/egusphere-egu21-10803
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

In solution stability of organic peroxides

María Teresa Baeza-Romero1,2,3, María Antiñolo1,2,3, Eva María Espildora1, Vicente Lopez-Arza Moreno1,2, and Edelmira Valero3,4
María Teresa Baeza-Romero et al.
  • 1University of Castilla la Mancha, Escuela de Ingeniería Industrial y Aeroespacial de Toledo, Physical- Chemistry, Toledo, Spain
  • 2University of Castilla la Mancha, , Instituto de Nanociencia, Nanotecnología y Materiales Moleculares (Inamol), Toledo, Spain
  • 3University of Castilla la Mancha, Departamento de Química-Fisica, Ciudad Real, Spain
  • 4University of Castilla la Mancha, Escuela Técnica Superior de Ingenieros Industriales de Albacete, Albacete, Spain

Organic peroxides are compounds possessing one or more oxygen–oxygen bonds. They are derivatives of hydrogen peroxide (H2O2), in which one or both hydrogens are replaced by a group containing carbon. This kind of compounds are ubiquitous in the environment being detected in Secondary Organic Aerosols (SOA)1,2, rainwater, and cloud water3,4. The role of peroxides is very important from health and climate perspectives5, and to understand the mechanism of SOA formation6. It is known that they can easily decompose to form H2O2 and other products7. However, the decomposition processes for organic peroxides have not been studied in a systematic way that allow to stablish improved strategies for sampling and storage of the samples. Moreover, these processes would happen in the atmosphere and need to be included in atmospheric models.

The aim of this work is to study the decomposition rate at different temperatures of hydroperoxides formed in the aqueous solution of some atmospherically relevant organic compounds with ozone. Iodometric method is used to monitor the total peroxides concentration. The implications related to sampling and storage for atmospheric samples containing organic peroxides are discussed together with the atmospheric impact of the studied processes.      

REFERENCES:    1. Mutzel, A., L. Poulain, T. Berndt, Y. Iinuma, M. Rodigast, O. Böge, S. Richters, G. Spindler, M. Sipila, T. Jokinen, et al. 2015. Environ. Sci. Technol. 2015, 49 (13):7754–61. ; 2. Kristensen, K., Å. K. Watne, J. Hammes, A. Lutz, T. Petäjä, M. Hallquist, M. Bilde, and M. Glasius. Environ. Sci. Technol. Lett. 2016, 3 (8):280–5; 3. Kelly, T.J., Daum, P.H. and S.E. Schwartz. J. Geophysical Research. 1985, 90(D5), 7861-7871; 4. Huang, S., Fuse, Y., Yamda, E. and Kagaku, B. Bunseki Kagaku. 2004, 53(9), 875-881; 5. Tao, F.; Gonzalez-Flecha, B.; Kobzik, L. Free Radical Biol. Med. 2003, 35, 327−340; 6.Seinfeld, J. H.; Pandis, S. N. Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, 3rd ed.; John Wiley & Sons: Hoboken, NJ, 2016; 7. Badali, K.M., Zhou, S., Aljawhary, D., Antiñolo, M., Chen, W.J., Lok, A., Mungall, Wong, E., J. P. S., Zhao, R. and Abbatt, J.P.D. Atmos. Chem. Phys., 2015, 15, 7831–7840.

How to cite: Baeza-Romero, M. T., Antiñolo, M., Espildora, E. M., Lopez-Arza Moreno, V., and Valero, E.: In solution stability of organic peroxides, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-10803, https://doi.org/10.5194/egusphere-egu21-10803, 2021.

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