O2sat: Saturation concentration of oxygen in water

In rsachse/limnotools: Help Tools of TU Dresden's Limnology Workgroup

Description

Empiracal formulae that can be used to compute saturation concentration of oxygen in water in mg L^{-1}

Usage

O2sat(Tc = T - 273.15, T = Tc + 273.15, NN = 0, S = 0, method = c("APHA", "Weiss", "Paul"))

Arguments

Tc	Temperature in degrees centigrade,
T	Temperature in degrees Kelvin,
NN	height above sea level (for method "Paul" only),
S	salinity in PSU (for method "Weiss" only),
method	formula that is used, see references for correct application.

Details

Method APHA is the standard formula in Limnology, method Weiss may be the standard formula in marine sciences. The method after Paul is a simple formula fitted on available tables.

Value

Vector with oxygen saturation concentration in mg/L.

References

American Public Health Association, Inc. (1985): Standard Methods for the Examination of Water and Wastewater. 18th edition, 1992.

Benson B. B. and Krause, D. (1980): The concentration and isotopic fractionation of gases dissolved in freshwater in equilibrium with the atmosphere. I. Oxygen. Limnology and Oceanography 25, 662-671.

Brown, L.C. and Barnwell, T. O. Jr. (1987): The Enhanced Stream Water Quality Models QUAL2E and QUAL2E-UNCAS: Documentation and User Manual. U.S. Environmental Protection Agency, Athens, Georgia. EPA/600/3-87/007, p. 41. http://www.epa.gov)

DIN 38408-23, Ausgabe:1987-11: Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung; Gasförmige Bestandteile (Gruppe G); Bestimmung des Sauerstoffsättigungsindex (G 23). http://www.din.de

Paul, L. (1985). Das thermische Regime der Talsperre Saidenbach und einige Beziehungen zwischen abiotischen und biotischen Komponenten. Dissertation, TU Dresden, Fakultät Bau-, Wasser- und Forstwesen. 84 pp.

Weiss, R. (1970). The solubility of nitrogen, oxygen, and argon in water and seawater. Deep-Sea Res. 17: 721-35.

Wagner, R. (1979): Die Praxis der Bestimmung des biochemischen Sauerstoffbedarfs - Ergebnisse einer Umfrage (Berichtigung und Ergänzung zur Veröffentlichung). Vom Wasser 53, S. 283-285.

Examples

  Tc <- seq(0, 30, 0.1)
  plot(Tc, O2sat(Tc), type="l", ylim=c(0,15))
  lines(Tc, O2sat(Tc, S=30, method="Weiss"))

rsachse/limnotools documentation built on Jan. 8, 2021, 5:37 a.m.