Fixation of atmospheric hydrogen sulfide with glyoxal.

Characterization of emissions of biogenic atmospheric hydrogen sulfide

The emission rate measurements of H2S into the atmosphere from coastal marine sediments were made by the use of an emission flux reactor (chamber) technique under deaerated (gaseous N2) and aerated (ambient air) conditions. The emission rates of H2S varied over a wide range (>0.05 to < 100 gS m-2 yr I ) . The emission of H2S was inversely related to the stage of tidal hydrology, with incoming a...

Bronchodilatory Effect of Hydrogen Sulfide in Rat

Objective(s) The aims of present study were to elucidate the effect of NaHS as a H2S donor on precontracted rat trachea smooth muscle, role of epithelium and nitric oxide in this action. Materials and Methods Tracheal rings from male adult Wistar rats were isolated and mounted in an organ bath containing Krebs–Henseleit solution under 1.5 g resting tension and contractions were recorded isom...

Atmospheric condensed-phase reactions of glyoxal with methylamine

[1] Glyoxal reacts withmethylamine in drying cloud droplet/ aerosol surrogates to form high molecular mass oligomers along with smaller amounts of 1,3-dimethylimidazole and light-absorbing compounds. The patterns observed by highresolution time-of-flight aerosol mass spectrometry indicate that oligomers form from repeated imine units. The reactions are 1st order in each reactant: rate-limiting ...

Supplement of Instrument inter-comparison of glyoxal, methyl glyoxal and NO2 under simulated atmospheric conditions

Electrochemical hydrogen sulfide biosensors.

The measurement of sulfide, especially hydrogen sulfide, has held the attention of the analytical community due to its unique physiological and pathophysiological roles in biological systems. Electrochemical detection offers a rapid, highly sensitive, affordable, simple, and real-time technique to measure hydrogen sulfide concentration, which has been a well-documented and reliable method. This...