title: Determination of parts-per-billion levels of hydrogen sulfide in air by potentiometric titration with a sulfide ion-selective electrode as an indicator.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D004566:Electrodes; D006862:Hydrogen Sulfide / Q000032:analysis*; D008832:Microchemistry; D011199:Potentiometry; D013440:Sulfides
chemical_list: D000393:Air Pollutants; D013440:Sulfides; D006862:Hydrogen Sulfide