Purification procedure for 15N, 18O, Δ17O analysis of nitrate
A solid phase extraction technique has been developed for purification of nitrate in environmental solutions for isotopic analysis. Three materials, C18, silica gel and cross linked poly-vinylpyrrolidone, were used to remove non-polar, slightly polar and humic compounds from solutions with high dissolved organic loads. The clean up procedure does not impact the isotopic composition of the nitrate analyte for samples in the 2-6 mg ( [image omitted]) range and improves accuracy and precision of the oxygen and nitrogen isotope analysis using the AgNO3 decomposition and thermal conversion elemental analysis techniques.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Affiliations: Department of Earth and Atmospheric Sciences, Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
Publication date: January 1, 2010