Detection of Anionic Nutrients by SERS of Cationic-Coated Silver Substrates. Effect of Chloride Ion

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Abstract:

Earlier it was demonstrated that surface-enhanced Raman spectroscopy (SERS) of cationic-coated silver substrates could successfully detect nitrate and sulfate in the parts-per-billion to parts-per-million concentration range. However, these cationic coatings also interact with chloride ion. In this paper, the magnitude of the chloride ion interference is examined. To eliminate the interference, we explore the use of selective ionophores and solid-phase extraction (SPE).

Keywords: ANIONIC NUTRIENTS; CHLORIDE ION; SERS; SPE

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702011953685

Publication date: October 1, 2001

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