scholarly journals SPECTROPHOTOMETRİC STUDY OF THE COMPLEX FORMATİON OF COPPER (II) WİTH 1-PHENYL-2- [2-HYDROXY-3-SULFO-5-NİTROPHENYLAZO] 1,3-BUTADİONE İN THE PRESENCE OF CATİONİC SURFACTANTS.

2016 ◽  
Vol 12 (11) ◽  
pp. 4543-4548
Author(s):  
А. V. Аyvazova ◽  
R. A. Aliyeva ◽  
F. M. Chiragov ◽  
S. R. Lahicova
Keyword(s):  
Complex Formation ◽  
Cetyltrimethylammonium Bromide ◽  
Cetylpyridinium Chloride ◽  
Photometric Determination ◽  
Spectrophotometric Study ◽  
Mixed Ligand ◽  
Concentration Interval ◽  
Homogeneous Composition ◽  
Determination Of Copper

Based on benzoylacetone synthesized 1-phenyl-2- [2-hydroxy-3-sulfo-5-nitrophenylazo] 1,3-butadione (PHSNPAB). Studied complex formation of copper (II) with 1-phenyl-2- [2-hydroxy-3-sulfo-5-nitrophenylazo] 1,3-butadione (PHSNPAB) in the presence and absence of the third component such as cetylpyridinium chloride (CPCl), cetylpyridinium bromide (CPBr) and cetyltrimethylammonium bromide (CTMABr). Single ligand complexes are formed at pH = 3, λ = 444nm, and mixed ligand complexes at pH = 2 λ = 456, 454, and 461 nm, respectively (CPCl, and CPBr, CTMABr). İdentified the relations of the reacting components in homogeneous composition of Cu-R (1: 2) and mixed ligand Cu-R-CPCl (1: 2: 2), Cu-R-CPBr (1: 2: 2) and Cu-R-CTMABr (1 2: 1) complexes, which concentration interval subordinated to Beer's law. The influence of external ions and masking substances on complex formation was studied. Method for the photometric determination of copper in the rocks was established.

Photometric determination of copper (II) microquantities in pyrite

2019 ◽  
Vol 85 (10) ◽  
pp. 23-28
Author(s):  
F. S. Aliyeva ◽  
F. O. Mamedova ◽  
F. N. Bahmanova ◽  
Yu. A. Yusibov ◽  
F. M. Chyragov
Keyword(s):  
Photometric Determination ◽  
Determination Of Copper

Spectrophotometric study of the reactions of lanthanoids with bromopyrogallol red in the presence of cation active tensides

1982 ◽  
Vol 47 (2) ◽  
pp. 503-508 ◽  
Author(s):  
Irena Němcová ◽  
Pavla Plocková ◽  
Tran Hong Con
Keyword(s):  
Absorption Spectra ◽  
Photometric Determination ◽  
Spectrophotometric Study ◽  
Ternary Complexes ◽  
Optimal Conditions ◽  
Bromopyrogallol Red ◽  
Binary Complexes

The absorption spectra of the binary complexes of lanthanoids with bromopyrogallol red were measured and the formation of ternary complexes with cation active tenside, Septonex, was studied. Optimal conditions were found for the formation of these complexes and the possibility of their use in the photometric determination of lanthanoids was demonstrated on several examples.

A Simple and Rapid Dispersive Liquid–Liquid Microextraction Based on Solidification of Floating Organic Drop Method Combined with Flame Atomic Absorption Spectrometry for Preconcentration and Determination of Copper

2013 ◽  
Vol 96 (2) ◽  
pp. 441-446 ◽  
Author(s):  
Mohammad Mirzaei ◽  
Mansoureh Behzadi
Keyword(s):  
Complex Formation ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Flame Atomic Absorption ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction ◽  
Determination Of Copper

Abstract A simple and rapid dispersive liquid–liquid microextraction based on solidification of floating organic drop method prior to flame atomic absorption spectrometry was developed for preconcentration and determination of copper. In this technique, simultaneous complex formation and extraction was performed with rapid injection of a mixture containing ethanol, 1-undecanol, and 1-(2-pyridylazo)-2-naphthol into a water sample spiked with Cu(II). After centrifugation, the test tube was cooled in an ice bath, and solidified extract transferred into a conical vial. Finally, it was dissolved into ethanol and copper concentration was determined. Some effective parameters of extraction and complex formation, such as extraction and disperser solvent type and volume, pH, concentration of the chelating agent, salt effect, and extraction time, were optimized. Under the optimum conditions, the calibration graph was linear in the range of 0.50 ng/mL to 0.30 μg/mL, with an LOD of 0.16 ng/mL. The RSD for 10 replicate measurements of 50.0 ng/mL of copper was ±1.4%. Two certified reference materials were analyzed, and the determined values were in good agreement with the certified values.

The rapid photometric determination of copper in ferrous materials

The Analyst ◽  
1943 ◽  
Vol 68 (808) ◽  
pp. 206 ◽  
Author(s):  
F. W. Haywood ◽  
A. A. R. Wood
Keyword(s):  
Photometric Determination ◽  
Determination Of Copper
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