Study on using ascorbic acid and ferrous reduction method to removal the chlorate ions (ClO3 ) in the water. The results show that 100 mL 3.06 mg/L of ClO3 in ascorbic acid and ClO3 quality ratio 7.19, pH =6.2,35°C, the reaction time of for 15 min, the removal rate was 100%. And ferrous reduction method to remove 100mL 3.06 mg/L of ClO3 in pH = 6.2, Fe and ClO3 quality ratio 1.79, 30°C for 30mi...

Several isolates of Gram-positive, acidophilic, moderately thermophilic, ferrous-iron- and mineral-sulphide-oxidizing bacteria were examined to establish unequivocally the characteristics of Sulfobacillus-like bacteria. Two species were evident: Sulfobacillus thermosulfidooxidans with 48-50 mol% G+C and Sulfobacillus acidophilus sp. nov. with 55-57 mol% G+C. Both species grew autotrophically an...

When plants are threaten by microbial attacks or treated with elicitors, alkalization of extracellular space is often induced and thus pH-dependent extracellular peroxidase-mediated oxidative burst reportedly takes place, especially at the site of microbial challenge. However, direct stimulus involved in activation of peroxidase-catalyzed oxidative burst has not been identified to date. Here, w...

Allergies to iron salts are seldom reported. We studied a patient with iron-defi ciency anemia who had suffered anaphylactic reactions caused by oral iron salts. An allergy study was performed using single-blind, placebo-controlled oral challenge and skin tests with various iron salts as well as excipients in commercial formulations. Oral challenges were positive for 2 of the commercial formula...

Ferrous iron-promoted reduction of a hindered peroxide bond underlies the antimalarial action of the 1,2,4-trioxane artemisinin and the 1,2,4-trioxolane arterolane. In appropriately designed systems, a 1,2,4-trioxolane ring can serve as a trigger to realize ferrous iron-dependent and parasite-selective drug delivery, both in vitro and in vivo. A stereocontrolled, expeditious (three steps), and ...

The corrosion resistance of electroless nickel (EN) coatings on ferrous substrates is affected by coating porosity. Carbon and iron carbide are present in the microstructure of ferrous alloys. If the sites of carbon and iron carbide are not catalytically active to EN deposition as the rest of substrate surface, there is a possibility of pore formation on these sites. In the present study, the r...

Cytochrome c was reduced by ferrous EDTA over the pH range 0.7 to 5.5, but not by ferrous ions alone. A typical hemochromogen of the low spin type was observed between pH 2.2 and 5.5, but spectra of the high spin type were seen between pH 0.7 and 2.1. CO-Ferrocytochrome c was obtained over the pH range of 1.6 to 3.2 by this method. The spectrum was similar to that of alkaline CO-ferrocytochrome...

OBJECTIVES To compare the safety and efficacy of iron carboxymaltose with ferrous sulfate to treat iron deficiency anemia in the post partum. METHODS Patients were randomized (2:1 ratio) to receive iron carboxymaltose (up to 3 weekly doses of 1000 mg maximum, applied in 15 min; n=227) or ferrous sulfate (100 mg twice daily, 12 weeks; n=117). Changes in hemoglobin and iron stores up to week 12...

Hydrogen peroxide reacts with ferrous Ascaris hemoglobin and converts it to oxyhemoglobin in a sequence of two reactions. The first is the reaction of ferrous Ascaris hemoglobin with hydrogen peroxide to form a stable product; the second is the reaction of this product with hydrogen peroxide to form oxyhemoglobin. Both reactions follow second order kinetics, since they are first order with resp...

Ferrous carbonate was precipitated from the reaction of ferrous sulfate and sodium carbonate in an aqueous medium. The precipitate was calcined at different~eating rates (2, 5 and 10 °C/min, respectively) up to 500°C and the iron oxides produced were found to be magnetic. X-ray diffraction studies indicated the presence of gamma ferric oxide as a major phase in all the cases. It was found that ...