scholarly journals High-Sensitive Analysis of Fluorescence XANES at Europium (Eu) LIII-edge for the Determination of Oxidation State for Trace Amount of Eu in Natural Samples by Bragg-type Crystal Analyzer System

2021 ◽  
Author(s):  
Rimi Konagaya ◽  
Naomi Kawamura ◽  
Akiko Yamaguchi ◽  
Yoshio Takahashi
Keyword(s):  
Oxidation State ◽  
Trace Amount ◽  
Sensitive Analysis ◽  
Crystal Analyzer ◽  
Type Crystal

Synthesis and solvatochromic studies of 2- amino-3-phenolazo1-(4-sulfophenyl)-3-methyi-5-pyrozolone and use it for the determination of trace amount of Nickel (II) in blood samples

2016 ◽  
Vol 5 (10) ◽  
pp. 4920
Author(s):  
Amar M. Ali ◽  
Hussain. J. Mohammed*
Keyword(s):  
Stability Constant ◽  
Trace Amount ◽  
Benzenesulfonic Acid ◽  
Determination Method ◽  
Blood Samples ◽  
Determination Of Nickel ◽  
Normal Human ◽  
The Stability ◽  
Normal Human Blood

A new, simple, sensitive and rapid spectrophotometric method is proposed for the determination of trace amount of Nickel (II). The method is based on the formation of a 1:2 complex with 4-(4-((2-hydroxy-6-nitrophenyl) diazenyl) -3-methyl-5-oxo-2, 5-dihydro-1H-pyrazol-1-yl) benzenesulfonic acid (2-ANASP) as a new reagent is developed. The complex has a maximum absorption at 516 nm and εmax of 1. 84 X 105 L. mol-1. cm-1. A linear correlation (0. 25 – 4. 0μg. ml-1) was found between absorbance at λmax and concentration. The accuracy and reproducibility of the determination method for various known amounts of Nickel (II) were tested. The results obtained are both precise (RSD was 1. 2 %) and accurate (relative error was 0. 787 %). The effect of diverse ions on the determination of Nickel (II) to investigate the selectivity of the method were also studied. The stability constant of the product was 0. 399 X 106 L. mol-1. The proposed method was successfully applied to the analysis of diabetes blood and normal human blood. 

scholarly journals Direct Determination of the Intracellular Oxidation State of Plutonium

2011 ◽  
Vol 50 (16) ◽  
pp. 7591-7597 ◽  
Author(s):  
Drew Gorman-Lewis ◽  
Baikuntha P. Aryal ◽  
Tatjana Paunesku ◽  
Stefan Vogt ◽  
Barry Lai ◽  
...  
Keyword(s):  
Oxidation State ◽  
Direct Determination

scholarly journals Determination of molybdenum oxidation state on the mechanochemically treated MoO3

2015 ◽  
Vol 6 (4) ◽  
pp. 474-480 ◽  
Author(s):  
N.S. Kopachevska ◽  
◽  
A.K. Melnyk ◽  
I.V. Bacherikova ◽  
V.A. Zazhigalov ◽  
...  
Keyword(s):  
Oxidation State

Determination of trace amount of IO 3 − with KIO3-KBr-(DBS-arsenazo) system by spectrophotometry

2014 ◽  
Vol 69 (5) ◽  
pp. 438-441
Author(s):  
Wei-Hua Hu ◽  
Qing-Zhou Zhai ◽  
Xue-Ming Zhang
Keyword(s):  
Trace Amount
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