respirometry (version 2.0.0)

co2_add: Calculate CO2 to add to water

Description

Calculates the moles of CO2 gas to be added to a volume of seawater to achieve the desired pCO2. Useful for ocean acidification experiments where CO2 treatments are desired.

Usage

co2_add(
  goal_pco2,
  start_pH,
  vol,
  temp = 25,
  sal = 35,
  TA = NULL,
  atm_pres = 1013.25
)

Value

moles of CO2 gas to be added to the seawater.

Arguments

goal_pco2

the desired pCO2 in the water (uatm).

start_pH

pH of the water before CO2 is added (total scale).

vol

volume of the water (liter).

temp

temperature (°C). Default is 25 °C.

sal

salinity (psu). Default is 35 psu. If sal < 26 psu, then TA must be provided.

TA

(optional) total alkalinity (umol / kg). If undefined TA is estimated from salinity using guess_TA.

atm_pres

atmospheric pressure (mbar). Default is 1013.25 mbar.

Author

Matthew A. Birk,

References

Jokiel PL, Bahr KD, Rodgers KS. 2014. Low-cost, high-flow mesocosm system for simulating ocean acidification with CO2 gas. Limnol Oceanogr Methods. 12:313–322.

See Also

co2_rate, flush_carb, carb, peri_pump

Examples

# I want the 50 L reservoir to have a pCO2 = 1000 uatm. It currently has a pH of 7.88.
# How many moles of CO2 gas should be added to the water to reach my desired pCO2?
co2_add(goal_pco2 = 1000, start_pH = 7.88, vol = 50)