The performance of a commercially available gas early 1970s,7,8 was the ability of the technique to provide interelement ratios and therefore empirical formula information. chromatograph employing an atomic emission detector has been evaluated with respect to analytical figures of merit and The numerical ratio of any particular element to carbon in an unknown compound can be calculated from the...

The use of excess conventional Phosphorus (P) fertilizers to improve agricultural productivity, in order to meet constantly increasing global food demand, potentially causes surface and ground water pollution, waterway eutrophication, soil fertility depletion, and accumulation of toxic elements such as high concentration of selenium (Se), arsenic (As) in the soil. Quite a number of soil microor...

Although the incidence and mortality of prostate cancer declined from 2000 to 2008 in the United States, the prostate cancer is still the most common cancer expected to occur and the second common causes of cancer death expected in men for 2012. It is estimated to account for 29% (241,740) of all newly diagnosed cancers in men and 9% (28,170) of all male cancer deaths (Siegel et al., 2012). The...

Linseed is well known for abundant content of α-linolenic acid why it has been widely used as a source of n-3 fatty acid. Higher ratio of polyunsaturated fatty acids can increase lipid peroxidation. Selenium (Se) plays a key role in antioxidant enzymes and can therefore be regarded for use in attempts focused on protection of fatty acids from oxidation. The organic Se has been shown to have hig...

Selenite (H(2)SeO(3)) reacts with thiol compounds (RSH) under acidic conditions to form selenotrisulfides (RSSeSR, i.e. monoselenodithiols). The stoichiometry of the reaction is proposed as 4RSH+H(2)SeO(3)-->RSSeSR+RSSR+3H(2)O. Surprisingly, we found novel polynuclear selenium-containing compounds, i.e. polyselenodipenicillamines (PenSSe(2-4)SPen), in the reaction of D-penicillamine (PenSH) wit...

The selenium concentration in milk was very low irrespective of whether there had been a selenium supplementation or not (4.5 and 5.1 μg/l, respectively). This was partly supposed to be caused by a low degree of supplementation, and partly by the fact that selenite – at least in comparison to organic selenium compounds – has been found to be relatively inefficient for increasing the selenium co...

Redox-modulating compounds derived from natural sources, such as redox active secondary metabolites, are currently of considerable interest in the field of chemoprevention, drug and phytoprotectant development. Unfortunately, the exact and occasionally even selective activity of such products, and the underlying (bio-)chemical causes thereof, are often only poorly understood. A combination of t...

INTRODUCTION Forms of selenium found in soils influence its mobility, uptake, and metabolism by plants. The major forms in alkaline, oxidizing environments which are available for plant uptake are selenium-VI as selenate, Se0 4 2 -) and selenium-IV (as selenite, $e0,'). The major influences on uptake are soil pH and salinity. High salinit y and pH favor seienium anion adsorption onto clays and ...

The aim of this work was to evaluate the possibility of using of the new selenoorganic ring compound, 3-(o-chlorobenzoylamino)-2-(o-tolylimino)-4-methyl-4-selenazoline, as a selenium supplement by investigating the influence of its short-term administration on Se accumulation and antioxidant status in kidney. For 10 days, adolescent male Wistar rats were treated with saline (control group), Na(...

Elevated concentrations of sulfate (500-4000 mg/L) exist in certain neutral drainages that contain reactive rock, but sufficient carbonate to neutralize the sulfuric acid produced. Due to concerns that sulfate may degrade surface water, cost-effective methods are required for reducing the contaminant load into these streams. This review examines methods primarily for sulfate removal, although s...