اندازه گيري مقادير كم اورانيوم به وسيله كمپلكس سيترات اورانيل به روش ولتامتري عاري سازي كاتدي

Cathodic Adsorptive Stripping Voltametric Determination of Uranium (VI) Complexed with Citrate.

Uranium (VI) forms a complex with citric acid. This complex can be used for a highly sensitive determination of uranium by adsorptive cathodic stripping voltametry using a hanging mercury drop electrode as working electrode. Influences of effective parameters such as pH, concentration of ligand, accumulation potential and accumulation time on the sensivity were studied. The Detection limit obtained under the optimal experimental condition is 1.9x10^-9 M after 150s of the accumulation time. The peak current is proportional to the concentration of U(VI) in the range 1.9x10^-9 to 4x 10^-7 M.