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Issue 7, 2018
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On-line pseudo-stationary magnetic solid-phase extraction using magnetic cation exchange microparticles and its application to the determination of strontium

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Abstract

An on-line magnetic solid-phase extraction (MSPE) system using a micrometer-sized cation exchanger was developed for strontium determination by microwave plasma atomic emission spectrometry (MP-AES). Micro-magnetic silica-based particles chemically immobilizing diethyl sulfone functional groups were pseudo-stationarily placed inside a knotted tube reaction flow-coil under the influence of an external magnetic field from two sandwiched magnets. In this study, the effect on the analytical impact was investigated using Sr as a model analytical target. The adsorption of Sr was carried out under acidic conditions, and its elution was performed with a nitric acid solution followed by MP-AES detection. The calculated detection limit was 0.59 μg L−1 with a 10-times sensitivity enhancement factor.

Graphical abstract: On-line pseudo-stationary magnetic solid-phase extraction using magnetic cation exchange microparticles and its application to the determination of strontium

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Publication details

The article was received on 02 Apr 2018, accepted on 09 May 2018 and first published on 10 May 2018


Article type: Technical Note
DOI: 10.1039/C8JA00088C
Citation: J. Anal. At. Spectrom., 2018,33, 1251-1255
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    On-line pseudo-stationary magnetic solid-phase extraction using magnetic cation exchange microparticles and its application to the determination of strontium

    A. Ayala and Y. Takagai, J. Anal. At. Spectrom., 2018, 33, 1251
    DOI: 10.1039/C8JA00088C

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