An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
https://www.nist.gov/publications/search
Search Publications
NIST Authors in Bold
Displaying 2026 - 2050 of 2114
Anzor Mikaia, Vladimir Smetanin, Vladimir G. Zaikin
A GC-MS method for reliable structure elucidation of olefins is developed. The method includes application of hydrogen as a carrier and reagent gas, the spectra of hydrogenation products provide information on the structure of carbon skeleton.
Anzor Mikaia, Vladimir Smetanin, Vladimir G. Zaikin, Valentin Vdovin
A GC-MS method is developed for the determination of double bond location in alkenes based on comparative analysis of the mass spectra of corresponding alkanes and their vicinal Dideutero-analogs obtained via online hydrogenation and selective deuteration
The abilities and limitations of mass spectrometry method in structure determination of bioorganic molecules containing three- and four-membered rings is discussed. Implementation of chemicals is considered.
Anzor Mikaia, Alla V. Antonova, Vladimir G. Zaikin, Nikolay A. Prostakov, Nikolay Vulfson, Igor Torgov
A GC-MS method is developed for structure determination of steroid alcohols. The method includes dehydrogenation of steroid alcohols on a copper powder at 325 oC.
Anzor Mikaia, Vladimir G. Zaikin, Alla V. Antonova, Nikolay A. Prostakov
On line H/D exchange is applied to carbonyl compounds prior mass spectrometry analysis on a GC column containing 10% KOD. This exchange reaction can be used for other compounds undergoing keto-enol tautomerism.
Anzor Mikaia, Elena Trusova, Vladimir G. Zaikin, Naum Volinsky, Elena Karaulova, Gregory Galpern
A GC-MS method is developed for structure determination of thiacyclanes. It is based on online gas- phase hydro- and deutero-desulfurization on Raney nickel after GC separation and before MS analysis.
The use of deuterium as a carrier and reagent gas for structural determination of alkenes, cyclopropane compounds and cyclic sulphides by reaction GC-MS is described. Catalytic transformation of analytes is accomplished in an on-line gas-phase microreactor