Issue 7, 2018

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

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

Supplementary files

Article information

Article type
Technical Note
Submitted
02 4月 2018
Accepted
09 5月 2018
First published
10 5月 2018

J. Anal. At. Spectrom., 2018,33, 1251-1255

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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