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Degassing, also known as degasification, is the removal of dissolved gases from liquids, especially water or aqueous solutions. There are numerous methods for removing gases from liquids. There are numerous methods for removing gases from liquids.
Some other methods like inert gas method (known as "Gronowski's dynamic method" [2])are also developed, whereby the inert gas is generated in the decarbonation column by passing air through a column filled with soda lime. The removal of the carbon dioxide is carried out in an exchanger column according to the contraflow principle.
This method is an improvised version of ASTM D 3612A to do multiple extraction instead of single extraction and based on Toepler principle. In this apparatus a fixed volume of sample oil is directly drawn from a sample tube into a degassing vessel under vacuum, where the gases are released.
Since the Germans used the gauss as the unit of the strength of the magnetic field in their mines' triggers (not yet a standard measure), Goodeve referred to the various processes to counter the mines as degaussing. The term became a common word. The original method of degaussing was to install electromagnetic coils into the ships, known as ...
Narrow-bore columns (1–2 mm) are used for applications when more sensitivity is desired either with special UV-vis detectors, fluorescence detection or with other detection methods like liquid chromatography-mass spectrometry. Capillary columns (under 0.3 mm) are used almost exclusively with alternative detection means such as mass spectrometry.
In 1965 Christensen and Izatt introduced titration calorimetry as a method for simultaneously determining the equilibrium constant and enthalpy. [ 3 ] [ 10 ] The ITC technique was then developed by H. D. Johnston in 1968 as a part of his Ph.D. dissertation at Brigham Young University, [ 11 ] and was considered niche until introduced ...
[2] [3] For example, before casting aluminium alloys, argon bubbles are injected into liquid aluminium using a rotary degasser. The argon bubbles rise to the surface, bringing with them some of the dissolved hydrogen. The degassing step reduces the occurrence of hydrogen gas porosity. In the steel making process, this method is used very ...
It has long been recognized that eruptions contribute much lower total SO 2 emissions than passive degassing does. [8] [9] Fischer et al (2019) estimated that, from 2005 to 2015, SO 2 emissions during eruptions were 2.6 teragrams (Tg or 10 12 g or 0.907 gigatons Gt) per year [10] and during non-eruptive periods of passive degassing were 23.2 ± ...