+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Chromium(III)-imprinted silica gel for speciation analysis of chromium in environmental water samples with ICP-MS detection



Chromium(III)-imprinted silica gel for speciation analysis of chromium in environmental water samples with ICP-MS detection



Talanta 75(2): 536-543



A new chromium(III)-imprinted 3-(2-aminoethylamino) propyltrimethoxysilane (AAPTS)-functionalized silica gel sorbent was synthesized by a surface imprinting technique and was employed as a selective solid-phase extraction material for speciation analysis of chromium in environmental water samples prior to its determination by inductively coupled plasma mass spectrometry (ICP-MS). The prepared Cr(III)-imprinted silica gel shows the selectivity coefficient of more than 700 for Cr(III) in the presence of Mn(II). The static adsorption capacity of the ion-imprinted and non-imprinted sorbent for Cr(III) were 30.5 mg g(-1) and 13.4 mg g(-1). It was also found that Cr(VI) could be adsorbed at low pH by the prepared imprinted silica gel, and this finding makes it feasible to enrich and determine Cr(VI) at low pH without adding reducing reagents. The imprinted silica gel sorbent offered a fast kinetics for the adsorption and desorption of both chromium species. Under the optimized conditions, the detection limits of 4.43 pg mL(-1) and 8.30 pg mL(-1) with the relative standard deviations (R.S.D.s) of 4.44% and 4.41% (C=0.5 ng mL(-1), n=7) for Cr(III) and Cr(VI) were obtained, respectively. The proposed method was successfully applied to the speciation of trace chromium in environmental water samples. To validate the proposed method, two certified reference materials were analyzed and the determined values were in a good agreement with the certified values. The developed method is rapid, selective, sensitive and applicable for the speciation of trace chromium in environmental water samples.

(PDF emailed within 0-6 h: $19.90)

Accession: 022208213

Download citation: RISBibTeXText

PMID: 18371918

DOI: 10.1016/j.talanta.2007.11.059


Related references

Occurrence and speciation of polymeric chromium(III), monomeric chromium(III) and chromium(VI) in environmental samples. Chemosphere 156: 14-20, 2017

Cloud point extraction combined with high-performance liquid chromatography for speciation of chromium(III) and chromium(VI) in environmental sediment samples. Journal of Hazardous Materials 177(1-3): 114-118, 2010

Cloud point extraction combined with high-performance liquid chromatography for speciation of chromium and chromium in environmental sediment samples. Journal Of Hazardous Materials7: 1 3, 114-118, 2010

Speciation analysis of chromium in natural water samples by electrothermal atomic absorbance spectrometry after separation/preconcentration with nanometer-sized zirconium oxide immobilized on silica gel. Microchimica Acta 158(3-4): 227-231, 2007

Speciation Analysis of Chromium in Environmental Samples. Critical Reviews in Environmental Science and Technology 42(4): 327-377, 2012

Investigation of chromium and chromium speciation in water by ion chromatography with chemiluminescence detection. Analytica Chimica Acta 293(3): 237-243, 1994

Speciation of chromium (VI) and total chromium determination in welding dust samples by flow-injection analysis coupled to atomic absorption spectrometry. Talanta 43(11): 1965-1974, 1996

On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry. Talanta 68(2): 388-393, 2008

On-line micro column preconcentration system based on amino bimodal mesoporous silica nanoparticles as a novel adsorbent for removal and speciation of chromium (III, VI) in environmental samples. Journal of Environmental Health Science and Engineering 13: 47, 2015

Determination of chromium(III) and total chromium in natural waters using a surface ion-imprinted silica gel as selective adsorbent. International Journal of Environmental & Analytical Chemistry 88(6): 373-384, 2008

Facile preparation of glutathione-stabilized gold nanoclusters for selective determination of chromium (III) and chromium (VI) in environmental water samples. Analytica Chimica Acta 770: 140-146, 2013

Speciation analysis of chromium(VI) and chromium(III) in water sample using flame atomic absorption spectrometry with TOA-benzene extraction separation system. Guang Pu Xue Yu Guang Pu Fen Xi 25(12): 2082-2084, 2006

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. Journal of Separation Science 36(24): 3949-3957, 2013

Speciation Determination of Chromium(VI) and Chromium(III) in Soil Samples after Cloud Point Extraction. Analytical Letters 42(11): 1662-1677, 2009

Panel discussion: analysis of chromium: methodologies and detection levels and behavior of chromium in environmental media. Environmental Health Perspectives 92: 41-43, 1991