Al3+ | Cr3+ | Fe3+ | Fe2+ | Mn2+ | Zn2+ | Co2+ | Ni2+ | |
(NH4) 2S + NH4OH + NH4Cl | Al (OH)3 | - - | Fe2S3 | FeS | MnS | ZnS | CoS | NiS |
H2S + HCOOH + HCOONH4 | - S | ZnS | ||||||
NaOH, KOH, NH4OH | Al (OH)3 | - - | Fe(OH)3 | Fe(OH)2 | Mn(OH)2 | Zn(OH)2 | Ni(OH)2 | |
NaOH KOH | - | Fe(OH)3 | Fe(OH)2 | Mn(OH)2 | Co(OH)2 | Ni(OH)2 | ||
H2O2 | Fe(OH)3 | Fe(OH)3 | Mn(OH)4 | - Co(OH)3 | Ni(OH)2 | |||
NH4OH | Al (OH)3 | - - | Fe(OH)3 | * | * | - |
. 3.1
Al3+ | Cr3+ | Fe3+ | Fe2+ | Mn2+ | Zn2+ | Co2+ | Ni2+ | |
CH3COONa | ||||||||
Na2CO3, K2CO3, (NH4)2CO3 | Al (OH)3 | - - | Fe(OH)3 | FeCO3 | MnCO3 | NiCO3 | ||
Na2HPO4 | AlPO4 | CrPO4 | FePO4 | Fe3PO4 | Mn3(PO4)2 | Zn3(PO4)2 | Ni3(PO4)2 | |
K4[Fe(CN)6] | - | |||||||
K4[Fe(CN)6] | - | - | ||||||
Fe(OH)3 | Fe(OH)3 | - | Ni(OH)3 | |||||
- |
|
|
* Fe(OH)3 MnO(OH)2
3.2
III I
| ||||
2. HCl | ||||
3. III (NH4)2S NH4OH . , NH4NO3 | ||||
: Al (OH)3, Cr (OH)3, Fe2S3, FeS, MnS, ZnS, CoS, NiS | : Ba2+, Sr2+, Ca2+, Mg2+, K+, Na+, NH4+ | |||
5. HNO3 . . Al3+, Cr3+, Fe3+, Mn2+, Zn2+, Co2+, Ni2+. Co2+ Mn2+ . | 4. (NH4)2S CH3COOH. . HNO3 . , HCl. I II (. . 2) | |||
6. Al3+, Cr3+, Fe3+ NH4OH . | ||||
: Al (OH)3, Cr (OH)3, Fe (OH)3 , | :Mn2+, [Zn (NH3) 6]2+, [Ni (NH3) 6]2+, [Co(NH3) 6]2+. . | |||
7. Al3+ Cr3+ Fe3+ ( Mn2+ , Co2+, Ni2+) 6 NaOH 3% H2O2 | 8. Zn2+ H2S . | |||
: Fe (OH)3, [MnO(OH)2], Co(OH)3, Ni(OH)2 | : [Al (OH) 4] CrO42 ) CrO42; ) Al3+ | : ZnS, HCl. . | : Mn2+, Co2+, Ni2+. . | |
4.2