Equilibrium solubilities of methane, carbon monoxide, and hydrogen in water and sea water

Wiesenburg, Denis A.; Guinasso, Norman L.

doi:10.1021/je60083a006

Cited by 921 publications

(662 citation statements)

References 24 publications

Supporting

Mentioning

595

Contrasting

Unclassified

Order By: Relevance

“…Following the methodology described in Gülzow et al (2011), sea surface [CH 4 ] in nmol kg À1 was calculated based on Henry's Law: where K H (unit: nmol kg À1 atm À1 ) is the solubility coefficient of CH 4 calculated after Wiesenburg and Guinasso (1979), and pCH 4 is the partial pressure of CH 4 in the headspace of the equilibrator, calculated via Eq. (2).…”

Section: Data Processingmentioning

confidence: 99%

Enhanced methane emissions from oil and gas exploration areas to the atmosphere – The central Bohai Sea

Zhang

Zhao

Zhai

et al. 2014

Marine Pollution Bulletin

View full text Add to dashboard Cite

a b s t r a c tThe distributions of dissolved methane in the central Bohai Sea were investigated in November 2011, May 2012, July 2012, and August 2012. Methane concentration in surface seawater, determined using an underway measurement system combined with wavelength-scanned cavity ring-down spectroscopy, showed marked spatiotemporal variations with saturation ratio from 107% to 1193%. The central Bohai Sea was thus a source of atmospheric methane during the survey periods. Several episodic oil and gas spill events increased surface methane concentration by up to 4.7 times and raised the local methane outgassing rate by up to 14.6 times. This study demonstrated a method to detect seafloor CH 4 leakages at the sea surface, which may have applicability in many shallow sea areas with oil and gas exploration activities around the world.

show abstract

Section: Data Processingmentioning

confidence: 99%

Enhanced methane emissions from oil and gas exploration areas to the atmosphere – The central Bohai Sea

Zhang

Zhao

Zhai

et al. 2014

Marine Pollution Bulletin

View full text Add to dashboard Cite

show abstract

“…Gas concentration in water was calculated using Henry's law. The saturation ratio (R) was calculated as the measured concentration of gas divided by the concentration in equilibrium with the atmosphere at the temperature of the water sample using the solubility data of Wiesenburg & Guinasso (1979).…”

Section: Water Samples and Analysis Of Methanementioning

confidence: 99%

Methanogenic System of a Small Lowland Stream Sitka, Czech Republic

Rulk¹,

Bednak²,

Mach³

et al. 2013

Biomass Now - Cultivation and Utilization

View full text Add to dashboard Cite

“…After at least 5 hours of equilibration, the gas concentration in the head space was analyzed by gas chromatography. Based on the methane concentration in the head space and the CH 4 concentration in the aqueous phase, which was computed by the Bunsen coefficient according to Wiesenburg and Guinasso [5], the methane concentration in the water sample was derived.…”

Section: Gas Chromatographymentioning

confidence: 99%

“…Application of GC as well as IR requires the phase transfer of gases from the dissolved to the gaseous phase. For this purpose, head-space techniques, vacuum-degassing, or spray chambers are applied [5].Head-space techniques and vacuum-degassing are very suitable for analysis of discrete water samples but or N 2 0 in surface waters sampled along transects by research vessels. Nevertheless, the time required for equilibration and subsequent GC or IR analysis is about several tens of minutes to hours [7].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Application of membrane inlet mass spectrometry for online and in situ analysis of methane in aquatic environments

Schlüter

Gentz

2008

J. Am. Soc. Mass Spectrom.

View full text Add to dashboard Cite

A method is presented for the online measurement of methane in aquatic environments by application of membrane inlet mass spectrometry (MIMS). For this purpose, the underwater mass spectrometer Inspectr200-200 was applied. A simple and reliable volumetric calibration technique, based on the mixing of two end member concentrations, was used for the analysis of CH 4 by MIMS. To minimize interferences caused by the high water vapor content, permeating through the membrane inlet system into the vacuum section of the mass spectrometer, a cool-trap was designed. With the application of the cool-trap, the detection limit was lowered from 100 to 16 nmol/L CH 4 . This allows for measurements of methane concentrations in surface and bottom waters of coastal areas and lakes. Furthermore, in case of membrane rupture, the cool-trap acts as a security system, avoiding total damage of the mass spectrometer by flushing it with water. The Inspectr200-200 was applied for studies of methane and carbon dioxide concentrations in coastal areas of the Baltic Sea and Lake Constance. The low detection limit and fast response time of the MIMS allowed a detailed investigation of methane concentrations in the vicinity of gas seepages. aAm Soc Mass T he analysis of methane as well as other trace gases like carbon dioxide, nitrous oxide, or dimethyl sulphide in aquatic environments is a major objective of basic and applied research. This includes investigations of the air-sea exchange of these greenhouse gases as well as of the release of methane from gassy sediments, hydrocarbon reservoirs, and pipelines, or through dissociation of gas hydrates. Although the spatial extent of such discharge sites is often rather small, ranging from a few square meters to several square kilometers, they are considered major drivers for the marine methane cycle in the present and past [1][2][3][4].The localization of such discharge sites as well as the detection and quantification of trace gases in lakes or the ocean relies essentially on water sampling (e.g., by Rosette Water Samplers, Hydro-Bios, Kiel, Germany) and subsequent chemical analysis by gas chromatography (GC) or infrared-spectrometry (IR) onboard the research vessel. Application of GC as well as IR requires the phase transfer of gases from the dissolved to the gaseous phase. For this purpose, head-space techniques, vacuum-degassing, or spray chambers are applied [5].Head-space techniques and vacuum-degassing are very suitable for analysis of discrete water samples but or N 2 0 in surface waters sampled along transects by research vessels. Nevertheless, the time required for equilibration and subsequent GC or IR analysis is about several tens of minutes to hours [7]. Hence, highresolution investigations, in time and space, of trace gases at natural gas seepages like pockmarks (morphological depressions at the seafloor) or hydrocarbon leakages during surveys by research vessels are rather difficult and time consuming.Compared with such rather long measuring times, application of membrane inlet mass...

show abstract

Equilibrium solubilities of methane, carbon monoxide, and hydrogen in water and sea water

Cited by 921 publications

References 24 publications

Enhanced methane emissions from oil and gas exploration areas to the atmosphere – The central Bohai Sea

Enhanced methane emissions from oil and gas exploration areas to the atmosphere – The central Bohai Sea

Methanogenic System of a Small Lowland Stream Sitka, Czech Republic

Application of membrane inlet mass spectrometry for online and in situ analysis of methane in aquatic environments

Contact Info

Product

Resources

About