Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles

Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles Publisher Pubmed

Shahrivari S¹ ; Faridbod F¹ ; Ganjali MR^{1, 2}

Show Affiliations

1. Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
2. Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran

Source: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy Published:2018

Abstract

In this work, a rapid, selective naked eyes colorimetric chemical probe for the detection of Cr3 + was developed based on functionalization of gold nanoparticles. For this purpose, surface of Au NPs was functionalized using 4-amino-5-methyl-4H-1,2,4-triazole-3-thiol (AMTT). Through colorimetric studies, it was found that in the presence of Cr3 + ions, AMTT-Au NPs instantly aggregated and resulted in a color change of the solution from red to blue. The color change of AMTT-Au NPs due to the aggregation induced by Cr3 + can be seen with even naked eyes and also by UV–Vis spectroscopy with a detection limit of 1.8 μM and 0.1 μM, respectively. AMTT-Au NPs showed excellent selectivity toward Cr3 + compared to other cations tested, including K+, Na+, Cs+, Fe3 +, Ni2 +, Cu2 +, Co2 +, Zn2 +, Ba2 +, Ca2 +, Mg2 +, Cd2 +, Pb2 +, Hg2 + ions and especially all trivalent lanthanide ions. The absorbance ratio (A650/A525) was linear toward Cr3 + concentrations in the range of 0.6–6.1 μM (R2 = 0.996). The best response was achieved over a pH range of 3–5. Furthermore, the proposed colorimetric method based on AMTT-Au NPs was successfully used for Cr3 + ion detection in plasma sample and some water samples. © 2017 Elsevier B.V.

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Style	Citing Format
MLA	Shahrivari S, Faridbod F, Ganjali MR. "Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles." Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, vol. 191, no. , 2018, pp. 189-194.
APA	Shahrivari S, Faridbod F, Ganjali MR (2018). Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 191(), 189-194.
Chicago	Shahrivari S, Faridbod F, Ganjali MR. "Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles." Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy 191, no. (2018): 189-194.
Harvard	Shahrivari S, Faridbod F, Ganjali MR (2018) 'Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles', Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 191(), pp. 189-194.
Vancouver	Shahrivari S, Faridbod F, Ganjali MR. Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 2018;191():189-194.
BibTex	@article{ author = {Shahrivari S and Faridbod F and Ganjali MR}, title = {Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles}, journal = {Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy}, volume = {191}, number = {}, pages = {189-194}, year = {2018} }
RIS	TY - JOUR AU - Shahrivari S AU - Faridbod F AU - Ganjali MR TI - Highly Selective and Sensitive Colorimetric Determination of Cr3 + Ion by 4-Amino-5-Methyl-4H-1,2,4-Triazole-3-Thiol Functionalized Au Nanoparticles JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy VL - 191 IS - SP - 189 EP - 194 PY - 2018 ER -

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