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VOCs collected by quadrupole proton transfer reaction mass spectrometry for July-August 2022. A description of this instrument is included in the related publication. The location of the measurement is indicated by latitude and longitude coordinates; TRACER-MAP included time at the AMF site in La Porte and additional sites around Houston. Data below the minimum detection limit are not included here.
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Aromatic hydrocarbons in carbonaceous chondrites investigated by time-of-flight mass spectrometry and hypothesized as formed in solar nebula under thermodynamic equilibrium
Origin of constituents of nucleic acid and protein molecules, noting biological molecules synthesis under conditions similar to those prevailing in prebiotic Earth, following Oparin-Haldane hypothesis
Biochemical stabilization of aqueous solutions of urine by unsaturated flow through columns of sand ripened with settled municipal sewage
Paraffinic hydrocarbons composition in Orgueil, Murray, Mokoia and other meteorites identified by gas chromatography
Aromatic compounds in benzene eluate fractions from carbonaceous chondrites by high resolution capillary gas-liquid chromatography
Presence of aromatic hydrocarbons in meteorites using chromatographic separation techniques
Methyl alcohol, ether and acetone vapors decomposition in microwave discharge, obtaining H and CO in addition to solid polymeric films
DENDRAL program used to construct all possible acyclic structural isomers of C, H, N and O
Carbonization of binary mixtures of anthracene biphenyl and penanthrene biphenyl
Preparation of reactive cyclic compounds using cryochemical techniques, and low temperature mass spectrometric stability and molecular energetics study
Assimilation and metabolism of C atoms of pyruvate and acetate by strict autotrophs Thiobacillus cell, using radioactive substrates
Abiotic synthesis of meteoritic aliphatic hydrocarbons produced by open flow Fischer- Tropsch processes for hydrogen and Co interactions
Carbonaceous chondrites isomeric alkanes identification by mass spectrometry and gas chromatography
Iron meteorites graphite-troilite nodules isomeric alkane composition, using gas chromatography and mass spectrometry
Study of the formation of purines, pyrimidines, and other bases from CO, H2, and NH3 under conditions similar to those used in the Fischer-Tropsch process. It is found that industrial nickel/iron alloy catalyzes the synthesis of adenine, guanine, cytosine, and other nitrogenous compounds from mixtures of CO, H2, and NH3 at temperatures of about 600 C. Sufficient sample was accumulated to isolate as solid products adenine, guanine, and cytosine, which were identified by infrared spectrophotometry. In the absence of nickel/iron catalyst, at 650 C, or in the presence of this catalyst, at 450 C, no purines or pyrimidines were synthesized. These results confirm and extend some of the work reported by Kayatsu et al. (1968).
System has been used for problems such as analysis of volatile metabolities in human blood and urine, analysis of air pollutants, and in tobacco smoke chemistry. Since adsorbent is reusable after porper reconditioning, method is both convenient and economical. System could be used for large scale on-site sampling programs in which sample is shipped to central location for analysis.