H2S Gruppe

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Fällung H2S pH= 1 schwerer löslichen Sulfide Pb2+, Hg2+, Bi3+, Cu2+, Cd2+, As3+/As5+, Sn2+/Sn4+ und Sb3+/Sb5
In (NH4)2Sx lösliche Sulfide SnS, SnS2, As2S3/As2S5 und Sb2S3/Sb2S5
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