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

Research output: Contribution to journalArticle

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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.

Original languageEnglish
Pages (from-to)1001-1012
Number of pages12
JournalAnalytical Letters
Volume30
Issue number5
DOIs
Publication statusPublished - Jan 1 1997

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Mercury (metal)
Glassy carbon
Mercury
Zinc
Carbon
Lead
Electrolytes
Electrodes
Chemical activation
Trace Elements
Trace elements
Derivatives

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Spectroscopy
  • Clinical Biochemistry
  • Biochemistry, medical
  • Electrochemistry

Cite this

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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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Analysis of lead and zinc by mercury-free potentiometric stripping analysis. / Andersen, Jens E.T.

In: Analytical Letters, Vol. 30, No. 5, 01.01.1997, p. 1001-1012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Analysis of lead and zinc by mercury-free potentiometric stripping analysis

AU - Andersen, Jens E.T.

PY - 1997/1/1

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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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