| --> Filtrat |
der |
HCl-Gruppe |
As, Sb, Sn, |
Pb, Cu |
Cd, Bi, Hg |
|
|
| |
|
|
+ H2S |
+ Erwärmen |
verdünnen (CdS!) |
|
|
| |
|
|
. |
Sulfide |
. |
Filtrat zur |
Urotropin-Gruppe --> |
| |
|
|
+ NH4Sx |
+ 15 min. |
Kochen A |
|
|
| |
|
As-Gruppe |
. |
. |
. |
Cu-Gruppe |
|
| |
|
[(As/Sb)S4]3-, [SnS3]2- |
|
|
|
(Pb/Cd/Hg/Cu)S, Cu2O, Bi2S3 |
|
| |
|
+ HCl B |
|
|
|
+ halbkonz. HNO3 + H2SO4 G |
|
| |
|
. |
|
|
. |
. |
. |
| |
|
(As/Sb)2S3, SnS2 |
|
|
H2[Pb(SO4)2], Cu/CdSO4, Bi2SO4)3 |
|
HgS |
| . |
Probe |
teilen C |
. |
|
| |
|
+ KW eindampfen |
| ?? |
|
|
+ NH4Sx |
|
+ verd. H2SO4 |
|
| |
| | |
- |
- |
| |
|
| |
- |
| |
| As2S3 |
Sn4+, Sb3+ |
Sb2S3, SnS2 |
AsO4S3- |
|
(Cu/Cd)SO4, Bi2(SO4)3 |
Pb(SO4)2 |
Hg2+ |
| + NH3, + H2O2 |
. |
+ HCl |
+ MgCl2 |
|
+ verd. H2SO4 |
|
+HCl, + Cu H |
| AsO43- |
| |
Sn4+, Sb3+ |
Mg(NH4)AsO4 |
|
(Cu/Cd)SO4, Bi2(SO4)3 |
|
Hg |
| + MgCl2 |
-> |
| |
|
|
+ NH3 |
|
| | |
|
+ ???? |
|
|
- |
| |
|
| Mg(NH4)AsO4 |
|
Sb2S3, SnS2 |
|
|
Bi(OH)3 |
[(Cd/Cu)(NH3)6]2+ |
|
| |
|
+ Fe-Nagel D |
- |
|
+ Na2[Sn(OH)4] |
+ KCN |
|
| |
|
SnCl2 |
Sb |
|
Bi |
Na22[(Cu/Cd)(CN)4] |
|
| |
|
+ HgCl2 E |
+ KW eindampfen F |
|
|
+ ?? |
|
| |
|
SnCl4, Hg |
SbCl3 |
|
|
CdS |
|
| |
|
|
+ H2S |
|
|
|
|
| |
|
|
Sb2S3 |
|
|
|
[5~ |