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The Role Of The 2,7-Dinitroso-1,8-Dihydroxynaphthalene-3,6-Disulfonic Acid Reagent In Determining The Thorium Ion (Iv), Nigora Qutlimurotova, Salohiddin Mahmadoliyev, Khabibullo Todjimukhamedov
The Role Of The 2,7-Dinitroso-1,8-Dihydroxynaphthalene-3,6-Disulfonic Acid Reagent In Determining The Thorium Ion (Iv), Nigora Qutlimurotova, Salohiddin Mahmadoliyev, Khabibullo Todjimukhamedov
CHEMISTRY AND CHEMICAL ENGINEERING
The aim is to develop a method for the amperometric determination of thorium (IV) ion with 2,7-dinitroso-1,8-dihydroxynaphthalene-3,6-disulfoxyl reagent. Methods of amperometric determination of thorium by solution of 2,7-dinitrozo-1,8-dihydroxynaphthalene-3,6-disulfonic acid on different acid-base properties of background electrolytes and buffer mixtures are considered. The half-wave potential of new reagent was found by logarithmic analysis equal 0.72 V at pH 2.82, which once again indicates on the irreversibility of the process of electrooxidation of the studied organic reagent in used acid-base medias. The conditions for amperometric titration of thorium are optimized, and the influence of outside accompanying metals on the shape of curves …
Synthesis Of 1,2,3-Triazoles Based On Propargyl Ethers Of Carbamate, Djuraev Abdukahhor, Yakubxodjaeva Malika, Ataxodjaeva Matluba, Gaibullaev Oibek
Synthesis Of 1,2,3-Triazoles Based On Propargyl Ethers Of Carbamate, Djuraev Abdukahhor, Yakubxodjaeva Malika, Ataxodjaeva Matluba, Gaibullaev Oibek
CHEMISTRY AND CHEMICAL ENGINEERING
By the interaction of propargyl esters of carbamate derivatives with phenylazide, 1,2,3- triazole derivatives were synthesized. Their anti-inflammatory activity was subsequently studied.During the study of biological activity, a relationship was established between the anti- inflammatory activity and the chemical structure in the studied series of 1,2,3-triazole derivatives.