Measuring xCO₂ using the CAT/NDIR method system set up, calibration, maintenance and shutdown
By: by Maren E. Tracy, Edward T. Peltzer and Catherine Goyet.
Contributors: Peltzer, Edward Thomas, 1950-; Goyet, Catherine.; Woods Hole Oceanographic Institution.
Series: WHOI -- 94-01.; WHOI (Series) -- 94-01.
Publisher: Woods Hole Oceanographic Institution
Published: 1994
Place of publication: [Woods Hole, Mass.]
Language: eng
Number of pages: 51
Subjects: Carbon dioxide -- Measurement.; Seawater -- Analysis.; Oceanographic instruments.
Description: Accurate measurement of partial pressure of CO2 in seawater is currently performed by measuring pC02 in an aliquot of a small volume of gas equilibrated with a large volume of the seawater to be measured. PC02 in the gas phase can be accurately measured either by gas chromatography or infra-red analysis. In order to minimize human labor to monitor pC02 in surface seawater we opted for the infra-red analysis which does not require a highly trained person and which can easily be automated. This report describes how we have designed and automated a system for continual surface seawater pC02 monitoring. It further indicates the necessary steps to set up, run, and maintain the system. With minor modifications this system can also be used to measure pC02 in discrete seawater samples. (Goyet et al., 1993)
Notes: "Technical report."

"Funding was provided by the Dept. of Energy under grant no. FG02 94ER61544."

"February 1994."

Also issued online.