Media type: E-Article Title: Combustion tube method for measurement of nitrogen isotope ratios using calcium oxide for total removal of carbon dioxide and water Contributor: Kendall, Carol.; Grim, Elizabeth. Published: American Chemical Society (ACS), 1990 Published in: Analytical Chemistry, 62 (1990) 5, Seite 526-529 Language: English DOI: 10.1021/ac00204a019 ISSN: 0003-2700; 1520-6882 Origination: Footnote: