seacarb (version 2.4.8)

at: 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.

Value

• AT
  Total alkalinity in mol/kg)

encoding

latin1

Details

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

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)