Selenium uptake onto natural pyrite
نویسندگان
چکیده
منابع مشابه
Effects of Different Rates of Selenium Fertilizer and Cow Manure on Selenium Uptake in Festuca arundinacea
One of the crucial elements for livestock and human nutrition is selenium and its deficiency or toxicity can harm human and livestock health. The present study is designed with the aim of studying the effect of different levels of selenium fertilizer (Selcote-Ultra) and cow manure on the uptake of selenium in tall fescue. For this purpose, a pot experiment with complete randomized block design ...
متن کاملIron Sulfide-arsenite Interactions: Adsorption Behavior onto Iron Monosulfides and Controls on Arsenic Accumulation in Pyrite
Arsenic mobility in natural systems is often linked to iron and sulfur cycling at redox boundaries, apparently due to co-precipitation reactions of arsenic with poorly crystalline iron (oxy)hydroxides, iron monosulfides, and pyrite (e.g., Edenborn et al., 1986; Moore et al., 1988). The mobility of arsenic under anoxic, sulfate-reducing conditions is expected to be governed by interactions betwe...
متن کاملRelative Bioavailability of Inorganic and Natural Selenium
Introduction Research efforts have identified groups of people with low selenium intakes and presumed selenium deficiency based on low blood selenium levels. Inhabitants of New Zealand [1], Finland [2], and China [3] often have low blood selenium. Individuals with therapeutic diets low in selenium [4], people undergoing parenteral administration [5] and alcoholics with cirrhosis [6] can also be...
متن کاملLight Dependence of Selenium Uptake by Phytoplankton and Implications for Predicting Selenium Incorporation into Food Webs
The potentially toxic element selenium is first concentrated from solution to a large but highly variable degree by algae and bacteria before being passed on to consumers. The large loads of abiotic and detrital suspended particles often present in rivers and estuaries may obscure spatial and temporal patterns in Se concentrations at the base of the food web. We used radiotracers to estimate up...
متن کاملEffects of time and dietary selenium concentration as sodium selenite on tissue selenium uptake by sheep.
Thirty crossbred wethers (60 kg avg initial wt) were used to study the time-dose response to dietary Se as sodium selenite (Na2SeO3). Sheep were fed a basal diet (.20 mg/kg Se, M basis) for 10 d; three wethers were killed and tissues were collected for controls. The remaining 27 sheep were assigned randomly to diets supplemented with either 3, 6 or 9 mg/kg Se (as-fed basis) from reagent grade N...
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ژورنال
عنوان ژورنال: Journal of Radioanalytical and Nuclear Chemistry
سال: 2012
ISSN: 0236-5731,1588-2780
DOI: 10.1007/s10967-012-1966-9