title: Thiomercurimetric determination of hydrogen sulfide in natural waters below and above microgram per liter level.
mesh_terms: D006859:Hydrogen / Q000032:analysis; D007202:Indicators and Reagents; D008628:Mercury; D008722:Methods; D008832:Microchemistry; D009942:Organometallic Compounds; D013440:Sulfides / Q000032:analysis*; D014876:Water Pollution / Q000032:analysis*
chemical_list: D007202:Indicators and Reagents; D009942:Organometallic Compounds; D013440:Sulfides; D006859:Hydrogen; D008628:Mercury