Determination of organic pollutants in water by off-line supercritical fluid extraction-gas chromatography/infrared spectrometry/mass spectrometry was written by Ren, Li;Wang, Guojun. And the article was included in Sepu in 1998.Category: pyrimidines This article mentions the following:
A supercritical fluid extraction (SFE) method using carbon dioxide for the determination of organic pollutants in Yellow River water was developed. In this paper, organic contaminants in 3L Yellow River water were concentrated on 1g GDX-301 adsorbent and then eluted from the adsorbent with supercritical CO2. The analytes extracted by SFE were collected into 1mL alc. collecting solvent through a SiO2 restrictor (35cm x 50μm i.d.). Finally, the collecting solvent was analyzed by Gas Chromatog./IR Spectrometry/Mass Spectrometry. The SFE conditions which were optimized for removal of the analytes from adsorbent were 20MPa, 60°C and 40min. The extraction efficiencies of SFE were directly compared to those obtained by using 15mL dichloromethane elution. Efficiencies of SFE under conditions of 20MPa, 60°C and 40min were generally higher than those of solvent elution. In the experiment, the researchers used many compounds, for example, 4,6-Diphenylpyrimidin-2-amine (cas: 40230-24-8Category: pyrimidines).
4,6-Diphenylpyrimidin-2-amine (cas: 40230-24-8) belongs to pyrimidine derivatives. The pyrimidine derivatives can easily interact with enzymes, genetic materials, and bio components within the cell. A Cu-catalyzed and 4-HO-TEMPO-mediated [3 + 3] annulation of commercially available amidines with saturated ketones enables an efficient and facile synthesis of structurally important pyrimidines via a cascade reaction of oxidative dehydrogenation/annulation/oxidative aromatization.Category: pyrimidines
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia