title: Determination of sulfide and thiols in the presence of vitamin B12a by pulse polarography.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D004340:Drug Contamination; D011048:Polarography / Q000379:methods*; D013440:Sulfides / Q000032:analysis*; D013871:Thiones / Q000032:analysis*; D014805:Vitamin B 12 / Q000032:analysis*
chemical_list: D013440:Sulfides; D013871:Thiones; D014805:Vitamin B 12