Functionalization of silver nanoparticles with 5-sulfoanthranilic acid dithiocarbamate for selective colorimetric detection of Mn2+ and Cd2+ ions?
New Journal of Chemistry Pub Date: 2016-03-08 DOI: 10.1039/C5NJ03454J
Abstract
In this work, we have described the use of sulfoanthranilic acid dithiocarbamate functionalized silver nanoparticles as a probe for simple, rapid and simultaneous colorimetric detection of Mn2+ and Cd2+ ions. The Mn2+ and Cd2+ ions induce the aggregation of sulfoanthranilic acid dithiocarbamate functionalized silver nanoparticles, resulting in a color change from yellow to orange associated with a red-shift in their surface plasmon resonance peak from 395 to 580 and 535 nm for Mn2+ and Cd2+ ions, respectively. Moreover, the aggregation of sulfoanthranilic acid dithiocarbamate functionalized silver nanoparticles induced by Mn2+ and Cd2+ ions was confirmed by dynamic light scattering and transmission electron microscopy. The Mn2+ and Cd2+ ion detection method based on their surface plasmon resonance peak using UV-visible spectrophotometry offers wide linear detection ranges from 5 to 50 μM and 10 to 100 μM with detection limits of 1.7 and 5.8 μM for Mn2+ and Cd2+ ions, respectively. The sulfoanthranilic acid dithiocarbamate functionalized silver nanoparticles act as a simple colorimetric probe for the simultaneous detection of Mn2+ and Cd2+ ions in various environmental water samples (drinking, tap, canal and river water) with good recovery values at minimal volumes of samples.
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Journal Name：New Journal of Chemistry
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CAS no.: 89640-58-4
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