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Woods Hole Oceanographic Institution

Sheri N. White

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Projects
» Laboratory Raman Spectroscopy

» Aerosol Iron

» In Situ Laser Raman Spectroscopy

» Optical Modem

» In Situ Sensors


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(Tom Kleindist)


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(Sheri White)


Laboratory Raman Spectroscopy

Collaborators:
Meg Tivey (WHOI-MC&G), Chip Breier (WHOI-AOPE)

I have laboratory laser Raman spectrometer with microprobe (see picture at right) and a 532 nm laser. This system can be used for laboratory analyses of minerals, liquids and gases. Two samples cells allow liquids and gases to be analyzed at pressures up to 400 bar, and temperatures from 0-300 C. Work to date has focussed on hydrothermal vent minerals and dissolved gases.

References:


White, S. N., Laser Raman spectroscopy as a technique for identification of seafloor hydrothermal and cold seep minerals, Chem. Geol., 259, 240-252, 2009.

Breier, J. A., C. R. German, and S. N. White, Quantitative mineral speciation of deep-sea hydrothermal particulates by Raman spectroscopy and Expert Algorithm (RaSEA) point counting: towards autonomous in situ exploration and experimentation, Geochem. Geophys. Geosyst., 10, Q05T05, doi:10.1029/2008GC002314, 2009.

Breier, J. A., C. R. Rauch, K. McCartney, B. M. Toner, S. Fakra , S. N. White, and C. R. German, A suspended-particle rosette multi-sampler for discrete biogeochemical sampling in low-particle-density waters, Deep Sea. Res. I, 56, 1579-1589, 2009.

Breier, J. A., S. N. White, and C. R. German, Mineral-microbe interactions in deep-sea hydrothermal systems: a challenge for Raman spectroscopy, Phil. Trans. R. Soc. A, 368, 3067-3086, 2010.

White, S. N., Qualitative and Quantitative analysis of CO2 and CH4 dissolved in water and seawater using Laser Raman Spectroscopy, Appl. Spec., 64, 819-827, 2010.


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