Solvent Extraction of Cobalt (II) with 2, 6-dithiolphenol and its Derivatives in the Presence of Hydrophobic Amines

2020 ◽  
Vol 42 (2) ◽  
pp. 253-253
Author(s):  
Kerim A Kuliyev Kerim A Kuliyev ◽  
Nailya A Verdizadeh Nailya A Verdizadeh ◽  
Geysar S Suleymanova and Naiba N Efendiyeva Geysar S Suleymanova and Naiba N Efendiyeva
Keyword(s):  
Solvent Extraction ◽  
Bottom Sediments ◽  
Photometric Determination ◽  
Sewage Water ◽  
Soil Samples ◽  
Mixed Ligand ◽  
Mixed Ligand Complexes ◽  
Optimal Conditions ◽  
Foreign Ions ◽  
Water Bottom

Mixed-ligand complexes of Cobalt(II) with dithiolphenol (DP) {2, 6-dithiolphenol (DTP) and its derivatives (2, 6-dithiol-4-methylphenol (DTMP), 2, 6-dithiol-4-propylphenol (DTPP), 2, 6-dithiol-4-tert-buthylphenol (DTBP)} in the presence of aminophenols (AP) have been studied by spectrophotometry. Extraction of mixed ligand complexes is maximal at pH 4.1-6.5. The optimal conditions for the formation and extraction of mixed-ligand compounds have been found and the ratios of components I the complexes have been determined. The Beer’s law was applicable in the range of 0.2-20 μg/ml. The effect of foreign ions and reagents on the extraction was studied. The method is free from common interferences. A procedure has been developed for extraction – spectroand#172;photometric determination cobalt in different objects (in steel, sewage water, bottom sediments, food and soil samples).

scholarly journals Spectroscopic Investiqation Complex Formation Of Vanadium Using 2,6-Dithiol-4-Methylphenol And HudrophobAmins

2015 ◽  
Vol 11 (4) ◽  
pp. 3488-3498
Author(s):  
Kerim A. Kuliyev
Keyword(s):  
Complex Formation ◽  
Photometric Determination ◽  
Mixed Ligand ◽  
Oil Products ◽  
Mixed Ligand Complexes ◽  
Optimal Conditions ◽  
Beer's Law ◽  
Beer’S Law ◽  
Oil And Oil Products

Mixed-ligand complexes of Vanadium (IV, V) with 2,6-dithiol-4-methylphenol (DTMP) and hydrofobamins(Am) have been studied by spectrophotometry. Extraction of mixed ligand complexes is maximal at pH 3.8-5.3. The optimal conditions for the formation and extraction of mixed-ligand compounds have been found and the ratios of components I the complexes have been determined. The Beer’s law was applicable in the range of 0.04-3.6mg/ml.The method is free from common interferences. A procedure has been developed for extraction – spectro-photometric determination vanadium in soils andin oil and oil-products.

ANALYSIS OF ACCUMULATION AND DISTRIBUTION OF LEAD IN THE SYSTEM WATER-BOTTOM SEDIMENTS IN THE BACH DANG ESTUARY (VIETNAM)

2017 ◽  
pp. 62-66
Author(s):  
Truong Van Tuan ◽  
Irina Vladimirovna Volkova
Keyword(s):  
Bottom Sediment ◽  
Bottom Sediments ◽  
Water Samples ◽  
Suspended Solids ◽  
Natural Habitat ◽  
Bottom Layer ◽  
Sediment Samples ◽  
Natural Breeding ◽  
System Water ◽  
Water Bottom

Research was held in the estuary of the river Bach Dang (Dongbay community, Rakhtay district, Hai Phong, Vietnam) in June, 2012 - May, 2013. Concentration of lead was studied in water, suspended solids and bottom sediment. Clam beach (natural breeding environment of Meretrix lyrata ) was inspected regularly, every month. Water samples were taken 6 times from the bottom layer 10 cm down the bottom, once per 3 hours in each of 12 investigated zones. Bottom sediment samples were taken at the depth 2 cm. The findings show that lead accumulates mainly in suspended solids (23.3 mg/kg) and in bottom sediment (14.31 mg/kg), in water it is in small quantities (0.003 mg/kg). Analysis of bottom sediment samples taken in different places showed that they have even leadcontent, lead is distributed uniformly, localization of contaminations is not found. The results obtained can be assumed as the basis for investigating lead accumulation and its excretion by clam Meretrix lyrata organisms in the natural habitat.

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