Journal
MICROCHEMICAL JOURNAL
Volume 98, Issue 2, Pages 225-230Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.microc.2011.02.002
Keywords
Cd; SPE-USN-ICPOES; Carbon nanotubes (CNTs); Oxidized-carbon nanotubes (ox-CNTs); L-alanine aminoacid (ala-CNTs)
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Funding
- Universidad Nacional de San Luis and Consejo Nacional de Investigaciones Cientificas y Tecnicas (UNSL-CONICET)
- Agencia Nacional de Promocion Cientifica (FONCYT)
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A research was performed to evaluate the capabilities of carbon nanotubes (CNTs) and modified CNTs to serve as sorbents for preconcentrating Cd together with on-line ultrasonic nebulization (USN)-inductively coupled plasma optical emission spectrometry (ICPOES). Three different carbon nanotubes sustrates namely, carbon nanotubes (CNTs), oxidized-carbon nanotubes (ox-CNTs) and L-alanine-carbon nanotubes (ala-CNTs) were studied systematically and the main factors influencing the preconcentration and determination of Cd were examined thoroughly. The CNTs evaluated showed dissimilar adsorption behaviors leading to increasing preconcentration factors when used in the proposed on-line solid phase extraction (SPE) system as follows: CNT
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