R: Calculates total alkalinity from potentiometric titration...

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 3.1.1 Index]