A Molecular Scale Approach: X-Ray Absorption Spectroscopy in Environmental Study

Vortragender: Dr. Ning Chen, Canadian Light Source, Saskatoon (Homepage)
Do. 14.12.2017 (12:00-13:30)

Canadian Light Source

As one of the most extensively applied synchrotron techniques, X-ray absorption fine structure (XAFS) spectroscopy plays a unique role in many scientific areas. Its element specific local structure probing capabilities make molecular level understanding for both crystalline and amorphous systems possible.

This presentation will first present X-Ray Absorption Spectroscopy (XAS) facilities and capabilities specific to the Hard X-ray MicroAnalysis (HXMA) beamline at the Canadian Light Source. HXMA is a wiggler-sourced hard X-ray beamline with an energy coverage of 5–40 keV, which is currently the only hard X-ray extended X-ray absorption fine structure (EXAFS) beamline available for Canadian Light Source users.

biofilmThe presentation will further focus on the principles of XAS as well as its applications. Two X-ray absorption near edge structure (XANES) theoretical molding guided case studies which will be specifically discussed are (1) the speciation of chromite in a biochar system, and the corresponding size estimation for the sub-nano scale chromite particle of the system, and (2) speciation of vanadyl porphyrins in the oil sands fluid petroleum coke from Alberta, Canada, respectively.

 

***
Invited by Martin Obst, Experimental Biogeochemistry,
as lecturer for the workshop on synchrotron-based X-ray absorption spectroscopy

 



Export as iCal: Export iCal
Aktuelle Termine


Fr. 19.10.2018
Forum Waldkontroversen: Wälder im Klimawandel
BayCEER-Kolloquium:
Do. 18.10.2018
- folgt -
Do. 25.10.2018
- folgt -
Ökologisch-Botanischer Garten:
So. 19.08.2018
Der ÖBG zum Kennenlernen: Allgemeine Gartenführung
Workshop:
Do. 11.10.2018
BayCEER Workshop 2018
Wetter Versuchsflächen
Luftdruck (356m): 976.3 hPa
Lufttemperatur: 13.9 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 17m): 1.2 km/h
Wind (Max.): 3.2 km/h
Windrichtung: N

...mehr
Diese Webseite verwendet Cookies. weitere Informationen