CFC-11 and CFC-12 Measurements
Concentrations of the dissolved chlorofluorocarbons (CFC-11 and CFC-12) were measured by shipboard electron-capture gas chromatography using the methods described by Bullister and Weiss (1988). The measurements were carried out by the group of the University of Miami under the direction of Dr. Rana A. Fine with the assistance of a technician from LDEO, Columbia University. A total of 1847 water analyses were carried out, 23 of which were duplicate analyses. The mean values of duplicate analyses are reported in the data file and are assigned a quality flag of 6 according to the WOCE Operations Manual (Joyce and Corry, 1994).