Method and device for safely generating pure ammonia for GC/CI-MS/MS and ICP-MS applications
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United States of America
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Sep 24, 2024
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Jan 9, 2024
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Jan 9, 2024
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Abstract
A method of supplying ammonia to a gas chromatography-chemical ionization tandem mass spectrometry (GC/CI-MS/MS) includes the steps of: providing ammonium carbonate and diethanolamine in a reaction vessel; heating the reaction vessel to a temperature of 50-60° C. to decompose the ammonium carbonate to form ammonia, carbon dioxide and water; absorbing the carbon dioxide and water by the diethanolamine to form diethanolamine carbonate; and supplying the ammonia to the GC/CI-MS/MS. Another method of supplying ammonia to a gas chromatography-chemical ionization tandem mass spectrometry (GC/CI-MS/MS) includes the steps of: providing ammonium carbonate and a mixture of monoethanolamine and diethanolamine in a reaction vessel; reacting the ammonium carbonate with the monoethanolamine to form ammonia and monoethanolamine carbonate; and supplying the ammonia to the GC/CI-MS/MS.
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