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Christoph Aeppli

Christoph Aeppli

Postdoctoral Investigator

Marine Chemistry & Geochemistry

Office Phone: +1 508 289 3698

caeppli@whoi.edu

» CV

WHOI Mailing Address:

Woods Hole Oceanographic Institution

266 Woods Hole Rd.

MS# 04

Woods Hole, MA 02543-1050

Education

2008: PhD (Dr.Sc. ETH Zurich) Environmental Chemistry. Swiss Federal Institute of Technology (ETH Zurich)
2002: MS (Diploma) in Chemistry. University of Berne/Switzerland.

Collecting weathered Deepwater Horizon oil samples

Research Interests

I am interested to understand microbial and abiotic processes that determine the Fate of Organic Compounds in Aqueous Environments. Specifically, I focus on the transformation of Petroleum Hydrocarbons once released (accidently or through natural seeps) from their reservoirs. Furthermore, I am interested in sources and biodegradation of Halogenated Compounds. These compounds have been released in the environment in large quantities, can be microbially dehalogenated under suitable conditions, and have not only anthropogenic, but also large natural biotic and abiotic sources. To address my research questions, I use Stable Isotopes (carbon and halogen) and advanced analytical techniques such as Two-Dimensional Gas Chromatography.

Appointments

- 05/2011–present: WHOI, Dept of Marine Chemistry and Geochemistry. Postdoctoral fellow.
- 01/2009–04/2011: Stockholm University, Dept. for Applied Environmental Science (ITM). Postdoctoral fellow.
- 04/2004–12/2008: Swiss Federal Institute of Aquatic Science and Technology (Eawag), and ETH Zurich. PhD candidate.

Publications
peer-reviewd publications

  • Wiegert C., Mandalakis M., Knowles T., Polymenakou P.N., Aeppli C., Machackova J., HolmstrandH., Evershed R.P., Pancost R.D., Gustafsson O., Carbon and Chlorine Isotope Fractionation During Microbial Degradation of Tetra- and Trichloroethene. Environ. Sci. Technol. 2013; in press; doi:10.1021/es305236y (link)
  • Aeppli C., Bastviken D., Andersson P., Gustafsson Ö., Chlorine isotope effects and composition of naturally produced organochlorines from chloroperoxidases, flavin-dependent halogenases, and in forest soil. Environ. Sci. Technol. 2013; in press; doi:10.1021/es3037669 (link)
  • Aeppli C., Tysklind M., Holmstrand H., and Gustafsson Ö. Use of Cl and C isotopic fractionation to identify degradation and sources of polychlorinated phenols: Mechanistic study and field application. Environ. Sci. Technol. 2013 (47) 790-797 (link)
  • Aeppli C., Carmichael C.A., Nelson R.K., Lemkau K.L., Graham W.M., Redmond M.C., Valentine D.L., and Reddy C.M. Oil weathering after the Deepwater Horizon disaster led to the formation of oxygenated residues. Environ. Sci. Technol. 2012 (46) 8799-8807 (link)
  • Wiegert C., Aeppli C., Knowles T., Holmstrand H., Evershed R., Pancost R.D., Machakova J., Gustafsson Ö. Dual carbon-chlorine stable isotope investigation of sources and fate of chlorinated ethenes in contaminated groundwater. Environ. Sci. Technol. 2012(46) 10918–10925 (link)
  • Amaral H.I.F., Aeppli C., Berg, M., Schwarzenbach R.P., Kipfer R. Assessing the fate of polychlorinated ethenes in aquifers with limited biodegradation potential: Added values of compound specific carbon isotope analysis and groundwater dating. Chemosphere 2011 (85) 774–781 (link)
  • Aeppli C., Wiegert C., Holmstrand H., Gustafsson Ö. Chlorine isotope fractionation of organic contaminants: added value for in-situ assessment of natural attenuation processes. In: Groundwater quality management in a rapidly changing world, Schirmer M., Höhn M., Vogt T. (Eds.); IAHS Red Book Series 2011 (342), ISBN 978-1-907161-16-2, p. 335-338 (link)
  • Aeppli C., Hofstetter T.B., Amaral H.I.F., Kipfer R., Schwarzenbach R.P., Berg M. Quantifying in situ transformation rates of chlorinated ethenes by combining compound-specific stable isotope analysis, groundwater dating, and carbon isotope mass balances. Environ. Sci. Technol. 2010 (44) 3705-3711 (link)
  • Aeppli C., Holmstrand H., Andersson P., Gustafsson Ö. Direct compound-specific stable chlorine isotope analysis of organic compounds with quadrupole GC/MS using standard isotope bracketing. Anal. Chem. 2010 (82) 420–426 (link)
  • Aeppli C., Berg M., Cirpka O.A., Holliger C., Schwarzenbach R.P., Hofstetter T.B. Influence of mass-transfer limitations on carbon isotope fractionation during microbial dechlorination of trichloroethene. Environ. Sci. Technol. 2009 (43) 8813–8820 (link)
  • Aeppli C., Berg M., Hofstetter T.B., Kipfer R., Schwarzenbach R.P. Simultaneous quantification of polar and non-polar volatile organic compounds in water samples by Direct Aqueous Injection – Gas Chromatography/Mass Spectrometry. J. Chromatogr., A 2008 (1181) 116-124 (link)
submitted
  • Hall G.J., Frysinger G.S., Aeppli C., Carmichael C.A., Gros J., Lemkau K., Nelson R.K., Reddy C.M., Oxygenated weathering products of Deepwater Horizon oil come from surprising precursors. Marine Pollution Bulletin; submitted
  • Ruddy B.M., Huettel M., Kostka J.E., Lobodin V.V., Bythell B.J., McKenna A.M., Aeppli C., Reddy C.M., Robert K. Nelson R.K., Marshall A.G., and Rodgers R.P., Abiotic and biotic oxidation products of Macondo Well oil: Pensacola Beach. Environ. Sci. Technol.; submitted

   Christoph Aeppli    

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