Publikace detail

The Study of Complex Formation Between 4-(2-Pyridylazo) Resorcinol and Al3+, Fe3+, Zn2+ and Cd2+ Ions in Aqueous Solution at 0.1M Ionic Strength

Autoři: Meloun Milan | Ghasemi Jahan | Peyman H.

Rok: 2007

Druh publikace: článek v odborném periodiku

Název zdroje: Journal of Chemical and Engineering Data

Název nakladatele: American Chemical Society

Místo vydání: Washington

Strana od-do: 1171-1178

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Studium vzniku komplexů mezi 4-(2-Pyridylazo) resorcinolem a Al3+, Fe3+, Zn2+ a Cd2+ ionty ve vodných roztocích a 0.1M iontové síle	Studium vzniku komplexů mezi 4-(2-Pyridylazo) resorcinolem a Al3+, Fe3+, Zn2+ a Cd2+ ionty ve vodných roztocích a 0.1M iontové síle bylo provedeno spektrofotometricky. Vedle počtu světlo-absorbujících částic programem INDICES byly programem SQUAD a EQUISPEC stanoveny konstanty stability.	Metoda hlavních komponent, hodnost matice, počet částic, konstanty stability, spektrofotometrické, SQUAD, EQUISPEC
eng	The Study of Complex Formation Between 4-(2-Pyridylazo) Resorcinol and Al3+, Fe3+, Zn2+ and Cd2+ Ions in Aqueous Solution at 0.1M Ionic Strength	The complexation reactions between 4-(2-pyridylazo)resorcinol (PAR) and Al3+, Fe3+, Zn2+ and Cd2+ ions at 25oC and 0.1M ionic strength are performed spectrophotometrically. A critical comparison of the various PCA methods on the absorbance matrix data concerning the number of light absorbing species has been made. Knowing of the number of light absorbing species is a critical step for subsequent quantitative and qualitative all solution equilibria studies. Therefore, the nine selected index functions for the prediction of the number of light-absorbing components which contribute to a set of spectra are critically tested using the algorithms implemented in INDICES software. Behind the number of various complexes formed the stability constants of species ML and MLH type log β11 and log β111 for the system of PAR (ligand L) with Zn2+ and Cd2+ ions and the stability constants of species ML, ML2, MLH and ML2H type log β11, log β12, log β111 and log β121 for the system of PAR (ligand L) with Al3+ and Fe3+ ions at 25°C and 0.1M ionic strength and various mole-ratio are estimated by the SQUAD and EQUISPEC programs.	Principal component analysis; Rank of matrix; Number of species; Stability constant, Spectrophotometric, SQUAD, EQUISPEC

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