A method for the analysis of dissolved hydrogen sulfide in crude oil samples is demonstrated using gas chromatography. In order to effectively eliminate interferences, a two dimensional column configuration is used, with a Deans switch employed to transfer hydrogen sulfide from the first to the second column (heart-cutting). Liquid crude samples are first separated on a dimethylpolysiloxane col...

millions of dollars are being spent worldwide on the repair and maintenance of sewer networks and wastewater treatment plants every year. the production and emission of hydrogen sulfide has been identified as a major cause of corrosion and odor problems in sewer networks. prediction of hydrogen sulfide production in the sewer system helps the engineers and manager to obtain a proper strategy fo...

Hydrogen sulfide (H2S) is an important biological messenger, but few biologically-compatible methods are available for its detection in aqueous solution. Herein, we report a highly water-soluble naphthalimide-based fluorescent probe (L1), which is a highly versatile building unit that absorbs and emits at long wavelengths and is selective for hydrogen sulfide over cysteine, glutathione, and oth...

INTRODUCTION Insufficient mesenteric perfusion is a dramatic complication in critically ill patients. Hydrogen sulfide, a newly recognized endogenous gaseous mediator, acts as an intestinal vasoactive agent and seems to protect against mesenteric ischemic damage. We investigated whether sodium hydrogen sulfide, a hydrogen sulfide donor, can improve mesenteric perfusion in an experimental model ...

Thiosulfate formation and biodegradation processes link aerobic and anaerobic metabolism of cysteine. In these reactions, sulfite formed from thiosulfate is oxidized to sulfate while hydrogen sulfide is transformed into thiosulfate. These processes occurring mostly in mitochondria are described as a canonical hydrogen sulfide oxidation pathway. In this review, we discuss the current state of kn...

This research focuses on activated carbons as adsorbents and catalysts for the removal of methyl mercaptan (MM) – odoriferous sulfur-containing compound commonly added to natural gas for leak detection purposes. Activated carbons are well known for their exceptional ability to adsorb some acidic gases. The application of activated carbons to remove hydrogen sulfide (one of the natural gas conta...

and Implications Ruminal hydrogen sulfide concentrations may be a useful tool to determine risk of cattle developing sulfurinduced polioencephalomalacia. In this study, steers were fed a low sulfur (0.2% S) or a high sulfur diet (0.7% S) and ruminal hydrogen sulfide concentrations were measured. Although differences in ruminal hydrogen sulfide due to sulfur intake were maintained throughout the...

The present study aimed to explore the mechanism underlying the protective effects of hydrogen sulfide against neuronal damage caused by cerebral ischemia/reperfusion. We established the middle cerebral artery occlusion model in rats via the suture method. Ten minutes after middle cerebral artery occlusion, the animals were intraperitoneally injected with hydrogen sulfide donor compound sodium ...