Isotope Ratio Mass Spectrometer


Isotope Ratio Mass Spectrometer
Thermo Fisher
Delta V Advantage

This instrument is coupled with a Conflo lll and Precon for nitrogen isotopic composition of nitrate and nitrite of seawater.

This method mainly consists of the reduction of nitrate to nitrite using spongy cadmium followed by reduction to nitrous oxide using sodium azide in an acetic acid buffer. The nitrous oxide is purged from the samples and cryogenically trapped using a modified Isomass Precon system. The isolated nitrous oxide is then analyzed on a Thermo Scientific Delta V continuous flow isotope ratio mass spectrometer.   


Research Facility

Dalhousie University
Nova Scotia (NS)

The cycling of the three key chemical controls on life in the ocean (carbon, oxygen, & nitrogen) is undergoing unprecedented change in the oceans as a result of human activities. We aim to observeunderstand, and predict complex interactions within these biogeochemical cycles, which will help us understand the implications of these changes for marine life and the climate. 

The CERC.OCEAN laboratory is focused on chemical oceanography and in the measurement of greenhouse gases, such as nitrous oxide, carbon dioxide and halocarbons. The laboratory is equipped with high-tech instruments, such as isotope ratio mass spectrometers, gas chromatographs, cavity ring down spectrometers and nutrient autoanalyzer. 

  • Chemistry and Biochemistry
  • Marine/Ocean Sciences
  • Energy (Renewable and Fossil)
  • Environmental Technologies and Related Services
  • Fisheries and Aquaculture
  • Ocean Industries

Industry Liaison Officer

Margaret Palmeter


Doug Wallace Primary Contact
CERC Chairholder
Claire Normandeau
Lab manager

Date submitted: Thu, Aug 30, 2018 12:21 PM
Date updated: Thu, Aug 30, 2018 12:22 PM

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