The complexing properties of a citrate medium are exploited to eliminate the Sn-Pb interference in anodic stripping voltammetric anal. In a citrate buffer at pH 3.9, Pb(II) can be detected at the ppb level even in the presence of 100-fold excess Sn; the min. observable concn. of Sn(IV) is .apprx.0.1 ppm. On the contrary, the simultaneous detection of both metals present together at ppb level is accomplished by coupling differential pulse anodic stripping voltammetry with a matrix exchange method.

Simultaneous determination of tin and lead at the parts-per-billion level by coupling differential pulse anodic stripping voltammetry with a matrix exchange method

PALMISANO, Francesco;SABBATINI, Luigia
1980-01-01

Abstract

The complexing properties of a citrate medium are exploited to eliminate the Sn-Pb interference in anodic stripping voltammetric anal. In a citrate buffer at pH 3.9, Pb(II) can be detected at the ppb level even in the presence of 100-fold excess Sn; the min. observable concn. of Sn(IV) is .apprx.0.1 ppm. On the contrary, the simultaneous detection of both metals present together at ppb level is accomplished by coupling differential pulse anodic stripping voltammetry with a matrix exchange method.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/129544
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