Analysis of lead and zinc by mercury-free potentiometric stripping analysis

Jens E.T. Andersen

doi:10.1080/00032719708002313

Analysis of lead and zinc by mercury-free potentiometric stripping analysis

Jens E.T. Andersen

Chemical & Forensic Sciences

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

7 Citations (Scopus)

Abstract

A method is presented for trace-element analysis of lead and zinc by potentiometric stripping analysis (PSA) where both the glassy-carbon working electrode and the electrolyte are free of mercury. Analysis of zinc requires an activation of the glassy-carbon electrode. The activation is performed by pre-concentrating zinc on glassy carbon at -1400 mV(SCE) in a mercury-free electrolyte containing 0.1 M HCl and 2 ppm Zn²⁺, followed by stripping at approx. -1050 mV. A linear relationship between stripping peak areas, recorded in the derivative mode, and concentration was found in the range 0- 2000 ppb.

Original language	English
Pages (from-to)	1001-1012
Number of pages	12
Journal	Analytical Letters
Volume	30
Issue number	5
DOIs	https://doi.org/10.1080/00032719708002313
Publication status	Published - Jan 1 1997

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Biochemistry
Spectroscopy
Clinical Biochemistry
Biochemistry, medical
Electrochemistry

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10.1080/00032719708002313

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abstract = "A method is presented for trace-element analysis of lead and zinc by potentiometric stripping analysis (PSA) where both the glassy-carbon working electrode and the electrolyte are free of mercury. Analysis of zinc requires an activation of the glassy-carbon electrode. The activation is performed by pre-concentrating zinc on glassy carbon at -1400 mV(SCE) in a mercury-free electrolyte containing 0.1 M HCl and 2 ppm Zn2+, followed by stripping at approx. -1050 mV. A linear relationship between stripping peak areas, recorded in the derivative mode, and concentration was found in the range 0- 2000 ppb.",

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N2 - A method is presented for trace-element analysis of lead and zinc by potentiometric stripping analysis (PSA) where both the glassy-carbon working electrode and the electrolyte are free of mercury. Analysis of zinc requires an activation of the glassy-carbon electrode. The activation is performed by pre-concentrating zinc on glassy carbon at -1400 mV(SCE) in a mercury-free electrolyte containing 0.1 M HCl and 2 ppm Zn2+, followed by stripping at approx. -1050 mV. A linear relationship between stripping peak areas, recorded in the derivative mode, and concentration was found in the range 0- 2000 ppb.

AB - A method is presented for trace-element analysis of lead and zinc by potentiometric stripping analysis (PSA) where both the glassy-carbon working electrode and the electrolyte are free of mercury. Analysis of zinc requires an activation of the glassy-carbon electrode. The activation is performed by pre-concentrating zinc on glassy carbon at -1400 mV(SCE) in a mercury-free electrolyte containing 0.1 M HCl and 2 ppm Zn2+, followed by stripping at approx. -1050 mV. A linear relationship between stripping peak areas, recorded in the derivative mode, and concentration was found in the range 0- 2000 ppb.

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JO - Analytical Letters

JF - Analytical Letters

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Analysis of lead and zinc by mercury-free potentiometric stripping analysis

Abstract

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