Quinoxaline - 2,3 - dithiol as Colorimetric Reagent. Determination of Nickel in Ammoniacal Solutions

1958 ◽  
Vol 30 (3) ◽  
pp. 365-368 ◽  
Author(s):  
D. A. Skoog ◽  
Ming-Gon. Lai ◽  
Arthur. Furst
Keyword(s):  
Determination Of Nickel ◽  
Colorimetric Reagent

2,2′-Thiodiethanethiol as a colorimetric reagent for the determination of nickel

The Analyst ◽  
1963 ◽  
Vol 88 (1045) ◽  
pp. 314-317 ◽  
Author(s):  
J. Segall ◽  
M. Ariel ◽  
L. M. Shorr
Keyword(s):  
Determination Of Nickel ◽  
Colorimetric Reagent

Determination of nickel and iron carbonyls in town gas

1963 ◽  
Vol 13 (12) ◽  
pp. 576-580
Author(s):  
A. B. Densham ◽  
P. A. A. Beale ◽  
R. Palmer
Keyword(s):  
Iron Carbonyls ◽  
Determination Of Nickel

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. 

Syntheses, X-ray, MSn, NMR and CD structure determination of nickel(II) complexes of Schiff bases of (S)-N-(2-benzoylphenyl)-1-benzylpyrrolidine-2-carboxamide and aromatic α-amino acids

Polyhedron ◽  
2008 ◽  
Vol 27 (17) ◽  
pp. 3477-3483 ◽  
Author(s):  
Milan Nádvorník ◽  
Vratislav Langer ◽  
Robert Jirásko ◽  
Michal Holčapek ◽  
Tomáš Weidlich ◽  
...  
Keyword(s):  
Amino Acids ◽  
Schiff Bases ◽  
Structure Determination ◽  
X Ray ◽  
Determination Of Nickel
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