rus
Issue #3/2025
V. I. Mardanova, Kh. D. Nagiev, F. M. Chiragov, M. F. Mamedova
Determination of Trace Quantities of Copper in Food Products
Determination of Trace Quantities of Copper in Food Products
10.22184/2227-572X.2025.15.3.222.228
The interaction of copper (II) with an azo com-pound based on chromotropic acid – disodium salt of 2,7 bis(azo 2 dihydroxy 3 sulfo 5 nitrobenzene)-1,8 dihydroxynaphthalene 3,6 disulfonic acid (R) in the presence of diantipy-rylmethane (DAM) and ethylenediamine (ED) was studied. The influence of the concentration of reactants, time and temperature on the formation of mixed-ligand complexes was established, and the stability constants and the linearity range of the calibration graph were calculated. It was found that in the presence of excess ions of Cd (II), Zn (II), Mn (II), Co (II), Ni (II), etc., copper (II) can be selectively determined in the form of mixed-ligand complexes Cu(II)-R-ED(DАМ). The developed method for determining copper in the form of mixed-ligand complex Cu(II)-R-ED was tested in the analysis of food products (peas and buckwheat).
Tags: 6 disulfonic acid 6 дисульфокислоты 7 bis(azo 2 dihydroxy 3 sulfo 5 nitrobenzene)-1 7 бис(азо 2 дигидрокси-3 сульфо 5 нитробензол)-1 8 dihydroxynaphthalene 3 8 дигидроксинафталин 3 copper (ii) di-antipyrylmethane disodium salt of 2 ethylenediamine food products mixed-ligand complex диантипирилметан динатриевая соль 2 медь (ii) пищевые продукты разнолигандный комплекс этилендиамин
Subscribe to the journal Analytics to read the full article.
The interaction of copper (II) with an azo com-pound based on chromotropic acid – disodium salt of 2,7 bis(azo 2 dihydroxy 3 sulfo 5 nitrobenzene)-1,8 dihydroxynaphthalene 3,6 disulfonic acid (R) in the presence of diantipy-rylmethane (DAM) and ethylenediamine (ED) was studied. The influence of the concentration of reactants, time and temperature on the formation of mixed-ligand complexes was established, and the stability constants and the linearity range of the calibration graph were calculated. It was found that in the presence of excess ions of Cd (II), Zn (II), Mn (II), Co (II), Ni (II), etc., copper (II) can be selectively determined in the form of mixed-ligand complexes Cu(II)-R-ED(DАМ). The developed method for determining copper in the form of mixed-ligand complex Cu(II)-R-ED was tested in the analysis of food products (peas and buckwheat).
Tags: 6 disulfonic acid 6 дисульфокислоты 7 bis(azo 2 dihydroxy 3 sulfo 5 nitrobenzene)-1 7 бис(азо 2 дигидрокси-3 сульфо 5 нитробензол)-1 8 dihydroxynaphthalene 3 8 дигидроксинафталин 3 copper (ii) di-antipyrylmethane disodium salt of 2 ethylenediamine food products mixed-ligand complex диантипирилметан динатриевая соль 2 медь (ii) пищевые продукты разнолигандный комплекс этилендиамин
Subscribe to the journal Analytics to read the full article.
Readers feedback
