1H NMR for quantifying sulfide trapping efficiency by using 1,3,5-tris(2-hydroxyethyl)-1,3,5-triazinane.
Hydrogen sulfide (H2S) is an extremely toxic colourless gas; it is corrosive and denser than air. It usually happens in oil and natural gas fields, refineries, coal mines, and in some industrial effluent treatment systems. This work presents an alternative method of monitoring and quantifying H2S trapping efficiency by using 1,3,5-tris(2-hydroxyethyl)-1,3,5-triazinane as a sequestering agent, and sodium sulfide as a source of sulfide ion, through (1)H NMR spectroscopy. The results proved that the reaction occurs very quickly at 20 °C at pH 7 and 10. 3,5-di(2-hydroxyethyl)-1,3,5-thiodiazinane and 5-(2-hydroxyethyl)-1,3,5-dithiozinane were observed and quantified; it was evidenced that (1)H NMR spectroscopy can be applied as a fast and effective method to quantify H2S trapping efficiency.
Departamento de Química, Instituto de Ciências Exatas, Universidade Federal Rural do Rio de Janeiro, BR 465, km 7, 23.890-000, Seropédica, Rio de Janeiro, Brazil.
André V S
AV
Canuto
Aurea
A
Echevarria
D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry* / Q000302:isolation & purification*; D001665:Binding Sites; D006862:Hydrogen Sulfide / Q000737:chemistry* / Q000302:isolation & purification*; D066244:Proton Magnetic Resonance Spectroscopy / Q000379:methods*; D064449:Sequestering Agents / Q000032:analysis / Q000737:chemistry*; D014227:Triazines / Q000032:analysis / Q000737:chemistry*
D000393:Air Pollutants; D064449:Sequestering Agents; D014227:Triazines; D006862:Hydrogen Sulfide
1,3,5-triazinane; 1,3,5-tris(2-hydroxyethyl)-1,3,5-triazinane; 1H; H2S sequestering agent; NMR