Development of an Hg(II) fibre-optic sensor for aqueous environmental monitoring

Musa Ahmad, Harun Hamzah, Elya Sufliza Marsom

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

An optical sensor for Hg(II) monitoring using a complex of zinc dithizonate immobilised on XAD 7 which is based on reflectance spectrophotometry has been developed in this study. Measurements were made using a kinetic approach whereby the reflectance signal is measured at a fixed time of 5 min. The sensor could be regenerated using a saturated solution of KCl in 1 M sulphuric acid. The sensor was found to have an optimum response at pH 3.0 with respective measurement repeatability and probe-to-probe reproducibility of 1.53% and 5.26%. A linear response was observed in the Hg(II) concentration range of 0.0-180.0 ppm with a calculated limit of detection (LOD) of 0.05 ppm. The results obtained for aqueous Hg(II) determination using this probe were found to be comparable with the well- established method of atomic absorption spectrometry.

Original languageEnglish
Pages (from-to)275-283
Number of pages9
JournalTalanta
Volume47
Issue number2
DOIs
Publication statusPublished - Oct 1998
Externally publishedYes

Fingerprint

Environmental Monitoring
Spectrophotometry
Fiber optic sensors
Limit of Detection
Zinc
Spectrum Analysis
Acids
Monitoring
Atomic absorption spectrometry
Sensors
Optical sensors
Kinetics
amberlite XAD 7

Keywords

  • Aqueous environmental monitoring
  • Hg(II)
  • Optical sensor

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Development of an Hg(II) fibre-optic sensor for aqueous environmental monitoring. / Ahmad, Musa; Hamzah, Harun; Sufliza Marsom, Elya.

In: Talanta, Vol. 47, No. 2, 10.1998, p. 275-283.

Research output: Contribution to journalArticle

Ahmad, Musa ; Hamzah, Harun ; Sufliza Marsom, Elya. / Development of an Hg(II) fibre-optic sensor for aqueous environmental monitoring. In: Talanta. 1998 ; Vol. 47, No. 2. pp. 275-283.
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