Estuaries, Vol. 18, No. 1, Part B (Mar., 1995), pp. 234-240 (7 pages) Analytical methods of dissolved Se species in river water and seawater were established and applied to study dissolved Se ...

Unsafe levels of selenium, sometimes referred to as an "essential toxin," can be reduced by a microbiological treatment. With this method, microorganisms reduce selenate to the less-toxic elemental ...

This is a preview. Log in through your library . Abstract ABSTRACT:Selenium is known as a 'double-edged sword' element on account of its dual beneficial and toxic effects on organisms, depending on ...

Years of work on things such as irrigation efficiency have led to dissolved selenium levels in the lower Gunnison River falling low enough that they now comply with aquatic-life standards. According ...

Environmental engineers have developed critical methods to remove toxic selenium from water. Selenium is a critical element, particularly for the thyroid and immune system, but too little or too much ...

(Nanowerk News) Selenium has been referred to as an “essential toxin” due to the fact that it shows only a marginal line between the nutritious requirement and toxic effects upon exposure. The steep ...

Selenium has been referred to as an "essential toxin" due to the fact that it shows only a marginal line between the nutritious requirement and toxic effects upon exposure. The steep dose response ...

MADISON, WI, AUGUST 25, 2008– Selenium has been referred to as an "essential toxin" due to the fact that it shows only a marginal line between the nutritious requirement and toxic effects upon ...