Selenium (Se) & selenium compounds
Selenium is a nonmetalic element found in a variety of chemical forms in both marine and freshwaters. Selenate (Se VI) and selenite (Se IV), the common inorganic forms in natural waters. Selenium is required in trace amounts by organisms ranging from bacteria to phytoplankton to mammals. (ref. ID; 1268)
[Se; an atomic absorption standards solution 1,000 ug Se per ml (nominal) in 1% HNO3)]
Test organisms
Rotifera: Brachionus calyciflorus (ref. ID; 127)
[[75]Se(IV)]
Test organisms
Green algae (formerly including protozoa): Chlamydomonas reinhardtii (ref. ID; 4995)
[Selenium Oxide]
Test organisms
Nematoda: Panagrellus redivivus (ref. ID; 868)
[Selenium Dioxide] CAS[7446-08-4] UN3283
Test organisms
Protozoa: Colpidium campylum (ref. ID; 6081)
[NaHSeO3]
Chemical formula
NaHSeO3
Test organisms
Oligochaeta: Tubifex tubifex (ref. ID; 6968)
[Sodium Selenate] CAS[13410-01-0] UN2630
Chemical formula
Na2SeO4
Test organisms
Protozoa: Paramecium putrinum (ref. ID; 1268)
[Sodium Selenite] CAS[10102-18-8] UN2630
Chemical formula
Na2SeO3
Test organisms
Protozoa: Paramecium putrinum (ref. ID; 1268)