Synthesis of heterocyclic azo compounds for spectrophotometric determination of metal ions

1968 ◽  
Vol 17 (11) ◽  
pp. 2541-2541
Author(s):  
S. B. Savvin ◽  
Yu. G. Rozovskii
Keyword(s):  
Metal Ions ◽  
Spectrophotometric Determination ◽  
Azo Compounds

scholarly journals A Double-Line Sequential Injection System for the Spectrophotometric Determination of Copper, Iron, Manganese, and Zinc in Waters

2005 ◽  
Vol 88 (2) ◽  
pp. 639-644 ◽  
Author(s):  
Inês P A Morais ◽  
M Renata S Souto ◽  
António O S S Rangel
Keyword(s):  
Metal Ions ◽  
Spectrophotometric Determination ◽  
Absorption Spectrometry ◽  
Injection System ◽  
Sequential Injection ◽  
Double Line ◽  
Relative Standard ◽  
Iron Manganese ◽  
Determination Of Copper

Abstract A double-line sequential injection system was developed for the spectrophotometric determination of several metal ions in waters. The proposed double-line configuration was used to enable adding sample and chromogenic reagents as merging zones. The methodology was applied to the spectrophotometric determination of copper, iron, manganese, and zinc in samples of diverse origins at the range of 0.15–5.00, 0.10–10.0, 0.48–4.00, and 0.11–5.00 mg/L, respectively. Different chromogenic reagents and detection wavelengths were used. The chromogenic reagents for iron and manganese were 1,10-phenanthroline and formaldoxime, respectively. Copper and zinc were both determined using the analytical reagent zincon. Analytical characteristics of the methodology, such as manifold parameters, buffer pH, and reagent concentrations were optimized, and interference of some of the metal ions commonly present in water sample was assessed. Results of the analysis were in agreement with those obtained by atomic absorption spectrometry. Repeatability, expressed as the relative standard deviation for 10 consecutive injections of water samples, was lower than 6%. The determination rate was approximately 36/h.

scholarly journals Extractive Spectrophotometric Determination of Pd(II) with Sodium Salt of Hexamethyleneiminecarbodithioate

2013 ◽  
Vol 23 ◽  
pp. 20-28
Author(s):  
S.D. Dhanavate ◽  
D.J. Garole ◽  
V.J. Garole ◽  
S.R. Tetgure ◽  
A.D. Sawant
Keyword(s):  
Metal Ions ◽  
Spectrophotometric Determination ◽  
Sodium Salt ◽  
Accurate Determination ◽  
Chelating Agent ◽  
Molar Absorptivity ◽  
Real Samples ◽  
Highly Sensitive ◽  
Ph Range

The reagent NaHMICdt·2H2O has found to be a good chelating agent for the spectrophotometric determination of various metal ions. The present investigation deals with spectrophotometric determination of Pd(II) by using NaHMICdt·2H2O. The reagent reacted with Pd(II) to give yellow complex extractable into toluene. Pd (II) was extracted quantitatively in the pH range 0.5-2.0. Pd(II)-HMICdt complex showed λmax at 435 nm. The extracted species has a 1:2 (M:L) stoicheometry. Beer’s law is obeyed in the range of 0.2-0.8 μg ml-1 of Pd (II). The molar absorptivity and the sandells sensitivity were found to be 0.754 x 104 lmol-1cm-1 and 0.0140 μg mol-1 cm-2 respectively. The effect of divers ion on the extraction of Pd(II) has been investigated. The proposed method is highly sensitive, selective, and simple and rapid has been applied for accurate determination of palladium in synthesis mixtures and real samples.

Circular Dichroism Spectrophotometric Determination of Metal Ions Using Optically Active Tris(thiolato) Type Rhodium(III) Complexes

2000 ◽  
Vol 73 (9) ◽  
pp. 2043-2050 ◽  
Author(s):  
Sen-ichi Aizawa ◽  
Yasushi Sone ◽  
Siti Khajar ◽  
Yuuki Ohishi ◽  
Shinkichi Yamada ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Metal Ions ◽  
Spectrophotometric Determination ◽  
Optically Active ◽  
Circular Dichroïsm
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