at {seacarb}R Documentation

Calculates total alkalinity from potentiometric titration data

Description

Calculates total alkalinity from potentiometric titration data

Usage

at(S=35, T=25, C=0.1, d=1, pHTris=NULL, ETris=NULL, weight, E, volume)

Arguments

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.

Details

Total alkalinity is estimated using the non-linear least-square procedure described by Dickson et al. (2007).

Value

AT

Total alkalinity in mol/kg)

Author(s)

Steeve Comeau, Heloise Lavigne and Jean-Pierre Gattuso

References

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.

See Also

alkalinity

Examples

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)

[Package seacarb version 3.2.2 Index]