Title of article :
Quantitation of dissolved gas content in emulsions and in blood using mass spectrometric detection
Author/Authors :
Grimley، نويسنده , , Everett and Turner، نويسنده , , Nicole and Newell، نويسنده , , Clayton and Simpkins، نويسنده , , Cuthbert and Rodriguez، نويسنده , , Juan، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
6
From page :
1513
To page :
1518
Abstract :
Quantitation of dissolved gases in blood or in other biological media is essential for understanding the dynamics of metabolic processes. Current detection techniques, while enabling rapid and convenient assessment of dissolved gases, provide only direct information on the partial pressure of gases dissolved in the aqueous fraction of the fluid. The more relevant quantity known as gas content, which refers to the total amount of the gas in all fractions of the sample, can be inferred from those partial pressures, but only indirectly through mathematical modeling. Here we describe a simple mass spectrometric technique for rapid and direct quantitation of gas content for a wide range of gases. The technique is based on a mass spectrometer detector that continuously monitors gases that are rapidly extracted from samples injected into a purge vessel. The accuracy and sample processing speed of the system is demonstrated with experiments that reproduce within minutes literature values for the solubility of various gases in water. The capability of the technique is further demonstrated through accurate determination of O2 content in a lipid emulsion and in whole blood, using as little as 20 μL of sample. The approach to gas content quantitation described here should greatly expand the range of animals and conditions that may be used in studies of metabolic gas exchange, and facilitate the development of artificial oxygen carriers and resuscitation fluids.
Keywords :
Dissolved Gases , Gas content , mass spectrometry , Blood , Artificial oxygen carriers , Resuscitation fluids
Journal title :
Journal of Chromatography B
Serial Year :
2011
Journal title :
Journal of Chromatography B
Record number :
1474603
Link To Document :
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