OBJECTIVE To establish a method for detecting plasma concentration of corn polysaccharide iron complex (CPIC) and investigate its absorption, distribution and elimination in rats. METHODS Using radioactivity isotope tracing method, we detected the radioactivity of (59)Fe-CPIC in the plasma of rats at different time points by gavages of 3 doses (28.0, 14.0, and 7.0 mg/kg) (59)Fe-CPIC in SD rat...

A simple and efficient method for speciation and determination of iron in different water samples was developed. The method is based on ionic liquid ultrasound assisted dispersive liquid–liquid microextraction (IL-USADLLME) followed by spectrophotometric determination. Fe(II) is complexed with 2,4,6-tri(2’-pyridyl)-l,3,5-triazine (TPTZ), neutralized through ion pair formation with sodium dodecy...

A solid-phase extraction method for the preconcentration of Fe, Mn and Zn on a column containing Ambersorb 572 has been developed, and the determination of Fe, Mn and Zn in water using a flame atomic absorption spectrophotometer (FAAS) has been performed. The optimum preconcentration parameters of the procedure have been determined. The effect of the pH, complexing agent, amount of adsorbent, f...

FRACTIONATION BETWEEN AQUEOUS FE(II) AND GOETHITE. B. L. Beard and R. Handler, M. M. Scherer, L. Wu, A. D. Czaja, A. Heimann, C. M. Johnson Department of Geosciences, 1215 W. Dayton Street, University of Wisconsin, Madison, WI 53706, USA, NASA Astrobiology Institute, University of Wisconsin, 3 Dept of Civil and Environmental Engineering, The University of Iowa, 4126 Seamans Center for the Engin...

A simple spectrophotometric method for the determination of N-acetyl-L-cysteine (NAC) and N-(2-mercaptopropionyl)glycine (MPG) in pharmaceutical preparations was developed, validated, and used. The proposed equilibrium method is based on a coupled two-step redox and complexation reaction. In the first step, Fe(III) is reduced to Fe(II) by NAC or MPG. Subsequently, Fe(II) is complexed with 2,4,6...

cotton (gossypium hirsutum l. cv. varamin ) an important industrial crop of iran, is grown in 300,000 ha, with an average seed -cotton yield of 1750 kg.ha-1. the main obstacle in the way of increasing average cotton yield is imbalanced fertilizer use. along with urea and triple super phosphate, cotton growers also need k, mg, zn, fe, mn, cu, and b, so these elements’ critical levels should ...

The crystallochemical characterization of magnetic spinels prepared from aqueous solution has been studied primarily by electron microscopy and 5 Fe Mossbauer spectroscopy. . Two synthetic routes investigated : 7Fe have been t : method 1; partial oxidation of Fell solutions " in the presence of NO;; at 100°C, O C , and method 2; reaction of hydrated Fe oxide (ferrihydrite) with Fell ions at roo...

Despite the increasing rate of nanoparticles (NPS) production and their application in agriculture, few studies have focused on their effect on plant growth. So, the present research was conducted in laboratory and greenhouse conditions. First, superparamagnetic iron oxide nanoparticles (SPIONS) with a humic acid coating (Fe3O4/HA) were synthesized in laboratory...