Iron sulfate compounds have been used extensively to produce iron gall ink, a widely used writing ink in the western world from the 12th-20th centuries. Iron gall ink is well known to corrode writing supports, so detection of iron species is important for the preservation of historical artwork and documents. Iron(ii) sulfate readily changes hydration states and oxidizes in ambient conditions, f...

Previous reports have shown that endotoxin decreases serum iron in experimental animals. In this study fever was produced in nine female and nine male normal subjects in order to define the temporal and quantitative changes in serum iron and ferritin concentrations. Six volunteers were randomly given bacterial endotoxin (5 ng/kg) or saline intravenously and received the alternative compound a w...

Poorly vascularized areas of solid tumors contain quiescent cell populations that are resistant to cell cycle-active cancer drugs. The compound VLX600 was recently identified to target quiescent tumor cells and to inhibit mitochondrial respiration. We here performed gene expression analysis in order to characterize the cellular response to VLX600. The compound-specific signature of VLX600 revea...

The subject of research was groundwater from Quaternary formations with high concentration of total iron, increased colour and turbidity, and an increased amount of organic substances and manganese. Successful purification of such water creates technological problems and is practically impossible to achieve by applying traditional groundwater treatment processes. One of the ways recommended for...

The most recent data on mechanisms of spin trapping of nitric oxide (NO) by iron dithiocarbamate complexes in animal and plant cells and tissues are considered. The rationale is as follows: 1 In the absence of NO in cells and tissues, iron binds primarily to compounds others than dithiocarbamate ligands, e.g., tricarbonic acids. 2. Predominant binding of iron to dithiocarbamate ligands takes pl...

Siderophores are low molecular weight compounds, synthesized and secreted by microorganisms, that specifically bind ferric iron with exceptionally high affinity. Microbes capture these compounds and take up the bound iron through specific, high-affinity systems. Saccharomyces cerevisiae can take up iron bound to siderophores through the transporters of the ARN family; however, the mechanism by ...

Many of the landfills may contain xenobiotic compounds including monoaromatic hydrocarbons and halogenated hydrocarbons, which are well documented to have negative effects in the aquatic environment and are resistant to biodegradation. In this research, landfill leachate was treated by combined advanced oxidation and suspended fiber biofiltration. Advanced oxidation destructed xenobiotics in th...

Biological wastewater treatment plants (BWWTP) are widely used to treat effluents from chemical process industry. However, there exist refractory substances, such as phenolic compounds, which require previous treatments. Advanced oxidation processes (AOP) are thoroughly being studied as pre-treatment to deal with such phenolic compounds before a BWWTP. Metal salts are widely used as homogeneous...

An electrochemical study of hydroxide- and methoxide-ligated iron(III) tetraphenylporphyrins possessing ortho-phenyl substituents that block mu-oxo dimer formation has been carried out. Ligation by these strongly basic oxyanions promotes the formation of iron(IV)-oxo porphyrins upon one-electron oxidation. Further one-electron oxidation of the latter provides the iron(IV)-oxo porphyrin pi-catio...

For two hours after the ingestion of a standard meal with an iron content of 3.45 mg there is a rise in iron concentration in the jejunal lumen. Initially this is in a high molecular weight form but there is a steady increase in the concentration of low molecular weight compounds. This is consistent with the gradual intraluminal transfer of iron from a mucopolysaccharide carrier to low molecula...