Microbial respiration and natural attenuation of benzene contaminated soils investigated by cavity enhanced Raman multi-gas spectroscopy

The Analyst
Tobias JochumTorsten Frosch

Abstract

Soil and groundwater contamination with benzene can cause serious environmental damage. However, many soil microorganisms are capable to adapt and are known to strongly control the fate of organic contamination. Innovative cavity enhanced Raman multi-gas spectroscopy (CERS) was applied to investigate the short-term response of the soil micro-flora to sudden surface contamination with benzene regarding the temporal variations of gas products and their exchange rates with the adjacent atmosphere. (13)C-labeled benzene was spiked on a silty-loamy soil column in order to track and separate the changes in heterotrophic soil respiration - involving (12)CO2 and O2- from the natural attenuation process of benzene degradation to ultimately form (13)CO2. The respiratory quotient (RQ) decreased from a value 0.98 to 0.46 directly after the spiking and increased again within 33 hours to a value of 0.72. This coincided with the maximum (13)CO2 concentration rate (0.63 μmol m(-2) s(-1)), indicating the highest benzene degradation at 33 hours after the spiking event. The diffusion of benzene in the headspace and the biodegradation into (13)CO2 were simultaneously monitored and 12 days after the benzene spiking no measurable degradation was det...Continue Reading

References

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Jan 13, 2015·Analytical and Bioanalytical Chemistry·Robert KeinerTorsten Frosch

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Citations

Sep 8, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Timea FroschTorsten Frosch
Sep 19, 2019·Analytical and Bioanalytical Chemistry·Anne SieburgTorsten Frosch
Nov 22, 2016·Applied Optics·Dmitry V Petrov
Dec 6, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Timea FroschTorsten Frosch
Apr 1, 2020·Applied Optics·Dmitry V PetrovAlexey A Shcherbakov
Apr 23, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Domes ChristianTorsten Frosch
Dec 15, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sebastian WolfTorsten Frosch
Jul 24, 2021·Analytical and Bioanalytical Chemistry·Annika BlohmTorsten Frosch
Nov 1, 2017·Analytical Chemistry·Di YanTorsten Frosch
Aug 28, 2020·Analytical Chemistry·Andreas KneblTorsten Frosch
Nov 6, 2018·Analytical Chemistry·Di YanTorsten Frosch
May 6, 2019·Analytical Chemistry·Andreas KneblTorsten Frosch

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