Reference type: Journal
Authors: Liu Y, Meng XG, Han J, Liu ZC, Meng MJ, Wang Y, Chen R, Tian SJ
Article Title: Speciation, adsorption and determination of chromium(III) and chromium(VI) on a mesoporous surface imprinted polymer adsorbent by combining inductively coupled plasma atomic emission spectrometry and UV spectrophotometry.
Publication date: 2013
Journal: Journal of Separation Science
Volume: 36
Issue: (24)
Page numbers: 3949-3957.
DOI: 10.1002/jssc.201300972

Abstract: In the present study, a Cr(III)-imprinted polymer (Cr(III)-IIP) was prepared by an easy one-step sol-gel reaction with a surface imprinting technique on the support of silica mesoporous material. A new SPE method for the speciation, separation, preconcentration, and determination of Cr(III) and Cr(VI) by inductively coupled plasma atomic emission spectrometry and UV on the mesoporous-imprinted polymer adsorbent was developed. The structure of the imprinted polymer was characterized by Fourier transform infrared spectroscopy, X-ray powder diffraction, transmission electron microscopy, and nitrogen adsorption-desorption isotherms. The adsorption kinetics, thermodynamics behavior, and recognition ability toward Cr(III) on Cr(III)-IIP and nonimprinted polymer were compared. The results showed that Cr(III)-IIP had higher selectivity and nearly a two times larger Langmuir adsorption capacity (38.50 mg/g) than that of NIP. The proposed method has been successfully applied in the determination and speciation of chromium in natural water samples with satisfactory results
Template and target information: chromium ion, Cr(III)
Author keywords: Chromium, mesoporous materials, Molecularly imprinted polymers, selectivity, Speciation