goal_flush_pH {respirometry}

Calculate goal pH of a flush reservoir to achieve the post-flush goal pCO2

Description

Calculates the pH of a flush reservoir that is needed to achieve the goal pCO2 after the flush reservoir has been drained into the respirometer.

Usage

goal_flush_pH(
  goal_pco2,
  resp_pH,
  resp_vol,
  flush_vol,
  flush_remain = 0,
  temp = 25,
  sal = 35,
  TA = NULL,
  atm_pres = 1013.25
)

Arguments

goal_pco2

the desired pCO2 in the respirometer after the flush (uatm).

resp_pH

pH inside the respirometer before the flush (total scale).

resp_vol

volume of the respirometer (liter).

flush_vol

volume of the flush reservoir (liter).

flush_remain

volume of the flush reservoir that will remain after the flush (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.

Value

pH needed in the flush reservoir to achieve the goal pCO2 post-flush (total scale).

Author(s)

Matthew A. Birk, [e-mail]

See Also

co2_rate, flush_carb, carb, peri_pump

Examples

# I want the respirometer to have a pCO2 = 1000 uatm. It currently has a pH of 7.6 and is 90 L.
# If I have a 200 L reservoir which will be drained completely, what do I want
# the pH of the reservoir to be?
goal_flush_pH(goal_pco2 = 1000, resp_pH = 7.6, resp_vol = 90, flush_vol = 200)