ISSN:
1436-5073
Keywords:
adsorption voltammetry
;
salicyl fluorone
;
gallium-complex
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract In the NH4Cl supporting electrolyte, within the pH range from 1 to 5, an irreversible adsorptive reducing wave of salicyl fluorone(SAF) was obtained. The electrode process was verified as follow: On the surface of mercury electrode, the adsorption of SAF obeys Frumkin isotherm. In 0.2 mol/l potassium hydrogen phthalate/HCl buffer solution, at pH 3.0, the sensitive adsorptive complex wave of Ga-SAF was obtained by linear sweep voltammetry. The composition of the electroactive complex was determined as Ga:SAF = 1∶1. The peak height of the complex is proportional to the concentration of Ga(III) in the range of 1.5 × 10−9 to 6.0 × 10−7 mol/l, the detection limit is 1.0× 10−9 mol/l. The proposed method has been applied to the determination of gallium content in aluminium alloys.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01244361
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