at {seacarb} | R Documentation |
Calculates total alkalinity from potentiometric titration data
at(S=35, T=25, C=0.1, d=1, pHTris=NULL, ETris=NULL, weight, E, volume)
S |
Salinity, default is 35. S must be a single value, not a vector. |
T |
Temperature in degrees Celsius, default is 25oC, can be given as a vector or as a single value. |
C |
Normality of the acid, default is 0.1. C must be a single value, not a vector. |
d |
Density of the acid, default is 1. d must be a single value, not a vector. |
pHTris |
pH used for the calibration of the electrode with the TRIS buffer. pHTris must be a single value, not a vector. |
ETris |
Potential used for the calibration of the electrode in mV. ETris must be a single value, not a vector. |
weight |
Weight of the sample in g. weight must be a single value, not a vector. |
E |
Potential measured during the titration in mV. E must be a vector. |
volume |
Volume of acid added to the sample in ml. volume must be a vector. |
Total alkalinity is estimated using the non-linear least-square procedure described by Dickson et al. (2007).
AT |
Total alkalinity in mol/kg) |
Steeve Comeau, Heloise Lavigne and Jean-Pierre Gattuso
Dickson A. G., Sabine C. L. and Christian J. R., 2007 Guide to best practices for ocean CO2 measurements. PICES Special Publication 3, 1-191.
alkalinity
data(alkalinity) data <- alkalinity AT <- at(S=data$S[1], T=data$temperature, C=data$normality[1], pHTris=data$pHTris[1], ETris=data$ETris[1], E=data$E, weight=data$weight[1], volume=data$volume)