Speciation of manganese in fresh water-I. Use of EPR studies

Barry Chiswell, Mazlin Mokhtar

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The process of standardization of the use of electron paramagnetic resonance (EPR) spectrometry in the determination of Mn(II) species in aqueous solution by comparison with atomic absorption spectrometry (AAS) is discussed. It is shown that EPR signals obtained from standardized aqueous solutions of manganese(II) perchlorate and nitrate in the concentration range of 0.05-2 mg/l. do not vary significantly over the pH range 2.1-7.0. Study of the effect (on the manganese EPR signals) of the addition of inorganic ions commonly found in significant concentrations in natural waters, viz. chloride, sulphate and bicarbonate, has shown that such ions, at the levels reported to occur in surface fresh waters, will not complex manganese(II); however, evidence is obtained that humic acid/manganese complexes could be present in such waters. The EPR signals are not affected by ionic strengths of the levels found in fresh waters.

Original languageEnglish
Pages (from-to)307-311
Number of pages5
JournalTalanta
Volume34
Issue number3
DOIs
Publication statusPublished - 1987
Externally publishedYes

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Electron Spin Resonance Spectroscopy
Manganese
Fresh Water
Paramagnetic resonance
Water
Spectrum Analysis
Ions
Humic Substances
Atomic absorption spectrometry
Bicarbonates
Ionic strength
Nitrates
Osmolar Concentration
Standardization
Spectrometry
Sulfates
Chlorides

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Speciation of manganese in fresh water-I. Use of EPR studies. / Chiswell, Barry; Mokhtar, Mazlin.

In: Talanta, Vol. 34, No. 3, 1987, p. 307-311.

Research output: Contribution to journalArticle

Chiswell, Barry ; Mokhtar, Mazlin. / Speciation of manganese in fresh water-I. Use of EPR studies. In: Talanta. 1987 ; Vol. 34, No. 3. pp. 307-311.
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