| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
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 1546 108 |
| Ultima descărcare din IBN: 2024-04-05 16:21 |
| Căutarea după subiecte similare conform CZU |
| 543.31 (8) |
| Luarea probelor de apă și analiza (83) |
 SM ISO690:2012SANDU, Maria, LUPASCU, Tudor, TARITA, Anatol, GOREACIOC (ARAPU), Tatiana, TURCAN, Sergiu, MOSANU, Elena. Method for nitrate determination in water in the presence of nitrite. In: Chemistry Journal of Moldova, 2014, nr. 2(9), pp. 8-13. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2014.09(2).01 |
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| Chemistry Journal of Moldova | ||||||
| Numărul 2(9) / 2014 / ISSN 1857-1727 /ISSNe 2345-1688 | ||||||
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| DOI:https://doi.org/10.19261/cjm.2014.09(2).01 | ||||||
| CZU: 543.31 | ||||||
| Pag. 8-13 | ||||||
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On the basis of currently revised thermodynamic data for Cr(III) and Cr(VI) hydrolysis and photolytic equilibria in addition to original thermodynamic and graphical approach, used in this paper, the repartition of their soluble and insoluble chemical species has been investigated. By means of the diagrams “ΔG – pH”, the areas of thermodynamic stability of chromium(III) hydroxide have been established for a number of the analytical concentration of Cr(III) in heterogeneous mixtures. The degree of polynuclearity for Cr (III) and Cr(VI) has been calculated for different initial composition of aqueous solutions. The diagrams of heterogeneous and homogeneous chemical equilibria have been used for graphical representation of complex equilibria in aqueous solutions containing Cr(III) and Cr(VI). The obtained calculated results correlate well with existing experimental data |
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| Cuvinte-cheie water, nitrate determination, nitrites, sulfaminic acid, Griess reagent, reducing mixture. |
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