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Table 2 Mean and standard deviation (SD) of calculated pH (pHCO2), measured pHspec and pHelec in different soils

From: Constraining the carbonate system in soils via testing the internal consistency of pH, pCO2 and alkalinity measurements

Soil pHCO2 (SD) pHspec (SD) pHelec (SD)
Lock Siliceous 7.98 (0.01) 8.00 (0.09) 7.91 (0.03)
Ngarkat 7.08 (0.01) 7.03 (0.04) 6.79 (0.03)
Monarto 1 8.06 (0.01) 8.06 (0.03) 8.11 (0.04)
Modra 7.60 (0.04) 7.67 (0.04) 7.63 (0.02)
Lock Horizon 8.17 (0.03) 8.12 (0.04) 8.10 (0.04)
Karoonda 7.05 (0.06) 6.47 (0.08) 6.24 (0.14)
Monarto 2 7.17 (0.12) 6.75 (0.06) 6.63 (0.06)
Cowirra 7.79 (0.01) 7.74 (0.05) 7.72 (0.02)
Black point 7.94 (0.01) 8.04 (0.03) 8.04 (0.01)
Average SD 0.03 0.05 0.05