Stand-off and up-close Raman detection of nitrates buried in sand and soils

Carlton Farley III; Sandra Sadate; Aschalew Kassu; Belther Monono; William Witt; Jonathan Bibb; Anup Sharma

doi:10.1117/12.2062184

12 September 2014 Stand-off and up-close Raman detection of nitrates buried in sand and soils

Carlton Farley III, Sandra Sadate, Aschalew Kassu, Belther Monono, William Witt, Jonathan Bibb, Anup Sharma

Proceedings Volume 9219, Infrared Remote Sensing and Instrumentation XXII; 92190J (2014) https://doi.org/10.1117/12.2062184
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

Raman measurements, using a 785nm laser, are taken of Ammonium Nitrate and Sodium Nitrate buried in sand. Nitrate is kept in clear plastic containers and buried underneath sand at various depths. Raman measurements are then taken at distances of 5m and 20m, with the sand being completely dry as well as completely wet. A different set of experiments was conducted with Nitrate buried in sand in a glass container, where no Raman signal was seen in dry sand. Water was then added at the edge of the container and allowed to migrate to the bottom. Raman measurements are then taken at a distance of 7mm over time to detect Nitrates brought to the surface by water as it wicks to the surface.

Citation Download Citation

Carlton Farley III, Sandra Sadate, Aschalew Kassu, Belther Monono, William Witt, Jonathan Bibb, and Anup Sharma "Stand-off and up-close Raman detection of nitrates buried in sand and soils", Proc. SPIE 9219, Infrared Remote Sensing and Instrumentation XXII, 92190J (12 September 2014); https://doi.org/10.1117/12.2062184

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