Voorbeelden van selenium

• Selenium is part of an enzyme that helps defend against free radicals.

• Tests of various possibilities led to a focus on the effects of selenium.

• Earlier studies have also shown lower levels of selenium in blood plasma in patients with rheumatoid arthritis compared to healthy individuals.

• In some cases, increased salinity or toxic materials (for example arsenic, selenium) from both natural and human sources have rendered the groundwater unusable even for agricultural purposes.

• Twelve chapters examine environmental deficiency and toxicity, and cover: volcanic emissions; radon; arsenic; fluoride; water hardness; selenium; iodine, aerosols and soil-borne pathogens, with more general reviews.

• According to these studies, the supply of selenium to domestic animals and the general population has declined.

• For this reason, 10 grammes of selenium, rather than just six, are now being added to selenium fertilizers.

• There is a known selenium deficiency in the soils in this country.