Electrochemical generation of volatile Pb species on Au/Hg cathodes as a sample introduction technique in the determination of Pb by atomic absorption spectroscopy

Ghislaine Morales; Lenys Fernández; Hugo Romero; Byron Lapo; José Alvarado

Electrochemical generation of volatile Pb species on Au/Hg cathodes as a sample introduction technique in the determination of Pb by atomic absorption spectroscopy

Ghislaine Morales, Lenys Fernández^*, Hugo Romero, Byron Lapo, José Alvarado

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We have used amalgamated Au cathodes for electrochemical generation of volatile lead hydride, PbH4. An electrochemical cell was coupled to an atomic absorption spectrometer, using the lead absorbance signal as a measure of production of volatile Pb hydride and univariate approach to optimize operational parameters. Cathode of Au/Hg showed better mechanical resistance and better tolerance to interfering ions than other traditional cathodes. Under optimized conditions, a 0.02 µg.L-1 (Sbl + 3s) detection limit for Pb (II) is reported in aqueous solutions. The accuracy of the method was determined by quantification of Pb in a river water material reference (SLRS-2/National Research Council Canada).

Translated title of the contribution	Generación electroquímica de especie volátil de Pb sobre cátodos de Au/Hg como técnica de introducción de muestra en la determinación de Pb por espectroscopia de absorción atómica
Original language	English
Pages (from-to)	49-54
Number of pages	6
Journal	Avances en Quimica
Volume	10
Issue number	1
State	Published - 2015
Externally published	Yes

Cite this

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abstract = "We have used amalgamated Au cathodes for electrochemical generation of volatile lead hydride, PbH4. An electrochemical cell was coupled to an atomic absorption spectrometer, using the lead absorbance signal as a measure of production of volatile Pb hydride and univariate approach to optimize operational parameters. Cathode of Au/Hg showed better mechanical resistance and better tolerance to interfering ions than other traditional cathodes. Under optimized conditions, a 0.02 µg.L-1 (Sbl + 3s) detection limit for Pb (II) is reported in aqueous solutions. The accuracy of the method was determined by quantification of Pb in a river water material reference (SLRS-2/National Research Council Canada).",

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T1 - Electrochemical generation of volatile Pb species on Au/Hg cathodes as a sample introduction technique in the determination of Pb by atomic absorption spectroscopy

AU - Morales, Ghislaine

AU - Fernández, Lenys

AU - Romero, Hugo

AU - Lapo, Byron

AU - Alvarado, José

PY - 2015

Y1 - 2015

N2 - We have used amalgamated Au cathodes for electrochemical generation of volatile lead hydride, PbH4. An electrochemical cell was coupled to an atomic absorption spectrometer, using the lead absorbance signal as a measure of production of volatile Pb hydride and univariate approach to optimize operational parameters. Cathode of Au/Hg showed better mechanical resistance and better tolerance to interfering ions than other traditional cathodes. Under optimized conditions, a 0.02 µg.L-1 (Sbl + 3s) detection limit for Pb (II) is reported in aqueous solutions. The accuracy of the method was determined by quantification of Pb in a river water material reference (SLRS-2/National Research Council Canada).

AB - We have used amalgamated Au cathodes for electrochemical generation of volatile lead hydride, PbH4. An electrochemical cell was coupled to an atomic absorption spectrometer, using the lead absorbance signal as a measure of production of volatile Pb hydride and univariate approach to optimize operational parameters. Cathode of Au/Hg showed better mechanical resistance and better tolerance to interfering ions than other traditional cathodes. Under optimized conditions, a 0.02 µg.L-1 (Sbl + 3s) detection limit for Pb (II) is reported in aqueous solutions. The accuracy of the method was determined by quantification of Pb in a river water material reference (SLRS-2/National Research Council Canada).

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M3 - Article

AN - SCOPUS:85018758767

SN - 1856-5301

VL - 10

SP - 49

EP - 54

JO - Avances en Quimica

JF - Avances en Quimica

IS - 1

ER -

Electrochemical generation of volatile Pb species on Au/Hg cathodes as a sample introduction technique in the determination of Pb by atomic absorption spectroscopy

Abstract

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