Recently, the American Conference of Governmental Industrial Hygienists (ACGIH), a broadly recognized authority on the health effects of toxic gases, changed its recommended threshold limit values ...

Hydrogen sulfide (H 2 S ... for an H 2 S event emergency response plan, the degrees of severity that the event will present and the potential exposure levels must be assessed.

For more information on SMACs, see the article "Exposure Guidelines ... effects and unconsciousness. Hydrogen sulfide SMAC values will define safe limits for spaceflight crews on future missions ...

Emissions of hydrogen sulfide raise health concerns in communities near California's largest lake, researchers say.

Focusing on preventing workplace injuries and illnesses from hydrogen sulfide (H2S), the American National Standards Institute (ANSI) Z390 Committee, "Accredited Standards Committee on Hydrogen ...

It’s safe to breathe low levels of hydrogen sulfide for about an hour, according to state air regulators. But that was also the case 53 years ago – despite national and state health and safety ...