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Removal of nitrite with sulfamic acid for nitrate N and O isotope analysis with the denitrifier method.
Granger J, Sigman DM. Granger J, et al. Among authors: sigman dm. Rapid Commun Mass Spectrom. 2009 Dec;23(23):3753-62. doi: 10.1002/rcm.4307. Rapid Commun Mass Spectrom. 2009. PMID: 19908214
A bacterial method for the nitrogen isotopic analysis of nitrate in seawater and freshwater.
Sigman DM, Casciotti KL, Andreani M, Barford C, Galanter M, Böhlke JK. Sigman DM, et al. Anal Chem. 2001 Sep 1;73(17):4145-53. doi: 10.1021/ac010088e. Anal Chem. 2001. PMID: 11569803
Measurement of the oxygen isotopic composition of nitrate in seawater and freshwater using the denitrifier method.
Casciotti KL, Sigman DM, Hastings MG, Böhlke JK, Hilkert A. Casciotti KL, et al. Among authors: sigman dm. Anal Chem. 2002 Oct 1;74(19):4905-12. doi: 10.1021/ac020113w. Anal Chem. 2002. PMID: 12380811
Updates to instrumentation and protocols for isotopic analysis of nitrate by the denitrifier method.
Weigand MA, Foriel J, Barnett B, Oleynik S, Sigman DM. Weigand MA, et al. Among authors: sigman dm. Rapid Commun Mass Spectrom. 2016 Jun 30;30(12):1365-83. doi: 10.1002/rcm.7570. Rapid Commun Mass Spectrom. 2016. PMID: 27197029
Recycled iron fuels new production in the eastern equatorial Pacific Ocean.
Rafter PA, Sigman DM, Mackey KRM. Rafter PA, et al. Among authors: sigman dm. Nat Commun. 2017 Oct 24;8(1):1100. doi: 10.1038/s41467-017-01219-7. Nat Commun. 2017. PMID: 29062103 Free PMC article.
Triple oxygen isotope analysis of nitrate using the denitrifier method and thermal decomposition of N2O.
Kaiser J, Hastings MG, Houlton BZ, Röckmann T, Sigman DM. Kaiser J, et al. Among authors: sigman dm. Anal Chem. 2007 Jan 15;79(2):599-607. doi: 10.1021/ac061022s. Anal Chem. 2007. PMID: 17222025
Nitrogen isotope fractionation by alternative nitrogenases and past ocean anoxia.
Zhang X, Sigman DM, Morel FM, Kraepiel AM. Zhang X, et al. Among authors: sigman dm. Proc Natl Acad Sci U S A. 2014 Apr 1;111(13):4782-7. doi: 10.1073/pnas.1402976111. Epub 2014 Mar 17. Proc Natl Acad Sci U S A. 2014. PMID: 24639508 Free PMC article.
Nitric oxide isotopic analyzer based on a compact dual-modulation Faraday rotation spectrometer.
Zhang E, Huang S, Ji Q, Silvernagel M, Wang Y, Ward B, Sigman D, Wysocki G. Zhang E, et al. Sensors (Basel). 2015 Oct 14;15(10):25992-6008. doi: 10.3390/s151025992. Sensors (Basel). 2015. PMID: 26473876 Free PMC article.
Publisher Correction: Recycled iron fuels new production in the eastern equatorial Pacific Ocean.
Rafter PA, Sigman DM, Mackey KRM. Rafter PA, et al. Among authors: sigman dm. Nat Commun. 2017 Dec 5;8(1):2018. doi: 10.1038/s41467-017-02138-3. Nat Commun. 2017. PMID: 29209057 Free PMC article.
Foraminiferal isotope evidence of reduced nitrogen fixation in the ice age Atlantic Ocean.
Ren H, Sigman DM, Meckler AN, Plessen B, Robinson RS, Rosenthal Y, Haug GH. Ren H, et al. Among authors: sigman dm. Science. 2009 Jan 9;323(5911):244-8. doi: 10.1126/science.1165787. Epub 2008 Dec 18. Science. 2009. PMID: 19095896
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