Speaker
Dr
Mark Roberts
(Woods Hole Oceanographic Institution)
Description
A method of hydrogen sulfide removal in water (for DIC radiocarbon analysis) or carbon dioxide gas was investigated. By using a silver nitrate solution in diluted nitric acid in a gas wash device, or a trap filled with silver nitrate impregnated silica gel, the hydrogen sulfide was easily removed from the carbon dioxide. The cleaned CO2 is pure enough to get reduced by hydrogen on the iron catalyst for graphite AMS measurement. The blank of this clean-up method is negligible. It will not change the isotopic composition of the CO2. This method is applied to some hydrogen sulfide containing samples successfully.
| Student Submission | No |
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Primary author
Dr
Li Xu
(Woods Hole Oceanographic Institution)
Co-authors
Mr
Alan Gagnon
Dr
Mark Roberts
(Woods Hole Oceanographic Institution)
Dr
Roberta Hansman
(Woods Hole Oceanographic Institution)
Mrs
Kathern Elder
(Woods Hole Oceanographic Institution)
Dr
Jeffrey Seewald
(Woods Hole Oceanographic Institution)
Dr
Susan Lang
(Woods Hole Oceanographic Institution)
