Metal.

[Bismuth(III) Nitrate Pentahydrate] CAS[10035-06-0] UN1477
Chemical formula; Bi(NO3)3/5H2O
Test organisms;
Oligochaeta: Tubifex tubifex (ref. ID; 6968)

[Soil Bi pollution]
Test organisms;
Oligochaeta: Eisenia fetida (ref. ID; 6750)