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[ report an error in this record ] basket (0): add | show Direct and indirect pCO2 measurements in a wide range of pCO2 and salinity values (the Scheldt Estuary) Frankignoulle, M.; Borges, A.V. (2001). Direct and indirect pCO2 measurements in a wide range of pCO2 and salinity values (the Scheldt Estuary). Aquat. Geochem. 7(4): 267-273. dx.doi.org/10.1023/A:1015251010481    Available in  Authors  VLIZ: Open Marine Archive 228007 [ download pdf ] Keywords Chemical compounds > Carbon compounds > Atmospheric gases > Carbon dioxide Properties > Chemical properties > Salinity Marine/Coastal; Brackish water Author keywords pH; estuaries; NBS Scale; pCO2<; sub>; equilibrator; infra-red gas analyser Authors    Top  Frankignoulle, M., more Borges, A.V., more Abstract Recent improvements in both Infra-red spectroscopy and equilibrator techniques have allowed to determine, for the first time, pCO2 using simultaneously and continuously both the direct and indirect methods in an estuary where pCO2 values range from 500 to 8500 µatm and salinity from 0 to 30. Our results show that both methods are in excellent agreement in the whole estuary (r2 = 0.999, n = 1075, p < 0.0001). Thus, the NBS (US National Bureau of Standards) scale, although inadequate for seawater samples, is appropriate for estuarine waters and can be applied with confidence to calculate pCO2. All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy  Top | Authors