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Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater

A surface-enhanced Raman scattering (SERS) detection method for environmental copper ions (Cu(2+)) was developed according to the vibrational spectral change of diethyldithiocarbamate (DDTC) on gold nanoparticles (AuNPs). The ultraviolet-visible (UV-Vis) absorption spectra indicated that DDTC formed...

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Autores principales: Ly, Nguyễn Hoàng, Nguyen, Thanh Danh, Zoh, Kyung-Duk, Joo, Sang-Woo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5713075/
https://www.ncbi.nlm.nih.gov/pubmed/29140287
http://dx.doi.org/10.3390/s17112628
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author Ly, Nguyễn Hoàng
Nguyen, Thanh Danh
Zoh, Kyung-Duk
Joo, Sang-Woo
author_facet Ly, Nguyễn Hoàng
Nguyen, Thanh Danh
Zoh, Kyung-Duk
Joo, Sang-Woo
author_sort Ly, Nguyễn Hoàng
collection PubMed
description A surface-enhanced Raman scattering (SERS) detection method for environmental copper ions (Cu(2+)) was developed according to the vibrational spectral change of diethyldithiocarbamate (DDTC) on gold nanoparticles (AuNPs). The ultraviolet-visible (UV-Vis) absorption spectra indicated that DDTC formed a complex with Cu(2+), showing a prominent peak at ~450 nm. We found Raman spectral changes in DDTC from ~1490 cm(−1) to ~1504 cm(−1) on AuNPs at a high concentration of Cu(2+) above 1 μM. The other ions of Zn(2+), Pb(2+), Ni(2+), NH(4)(+), Mn(2+), Mg(2+), K(+), Hg(2+), Fe(2+), Fe(3+), Cr(3+), Co(2+), Cd(2+), and Ca(2+) did not produce such spectral changes, even after they reacted with DDTC. The electroplating industrial wastewater samples were tested under the interference of highly concentrated ions of Fe(3+), Ni(2+), and Zn(2+). The Raman spectroscopy-based quantification of Cu(2+) ions was able to be achieved for the wastewater after treatment with alkaline chlorination, whereas the cyanide-containing water did not show any spectral changes, due to the complexation of the cyanide with the Cu(2+) ions. A micromolar range detection limit of Cu(2+) ions could be achieved by analyzing the Raman spectra of DDTC in the cyanide-removed water.
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spelling pubmed-57130752017-12-07 Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater Ly, Nguyễn Hoàng Nguyen, Thanh Danh Zoh, Kyung-Duk Joo, Sang-Woo Sensors (Basel) Article A surface-enhanced Raman scattering (SERS) detection method for environmental copper ions (Cu(2+)) was developed according to the vibrational spectral change of diethyldithiocarbamate (DDTC) on gold nanoparticles (AuNPs). The ultraviolet-visible (UV-Vis) absorption spectra indicated that DDTC formed a complex with Cu(2+), showing a prominent peak at ~450 nm. We found Raman spectral changes in DDTC from ~1490 cm(−1) to ~1504 cm(−1) on AuNPs at a high concentration of Cu(2+) above 1 μM. The other ions of Zn(2+), Pb(2+), Ni(2+), NH(4)(+), Mn(2+), Mg(2+), K(+), Hg(2+), Fe(2+), Fe(3+), Cr(3+), Co(2+), Cd(2+), and Ca(2+) did not produce such spectral changes, even after they reacted with DDTC. The electroplating industrial wastewater samples were tested under the interference of highly concentrated ions of Fe(3+), Ni(2+), and Zn(2+). The Raman spectroscopy-based quantification of Cu(2+) ions was able to be achieved for the wastewater after treatment with alkaline chlorination, whereas the cyanide-containing water did not show any spectral changes, due to the complexation of the cyanide with the Cu(2+) ions. A micromolar range detection limit of Cu(2+) ions could be achieved by analyzing the Raman spectra of DDTC in the cyanide-removed water. MDPI 2017-11-15 /pmc/articles/PMC5713075/ /pubmed/29140287 http://dx.doi.org/10.3390/s17112628 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ly, Nguyễn Hoàng
Nguyen, Thanh Danh
Zoh, Kyung-Duk
Joo, Sang-Woo
Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater
title Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater
title_full Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater
title_fullStr Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater
title_full_unstemmed Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater
title_short Interaction between Diethyldithiocarbamate and Cu(II) on Gold in Non-Cyanide Wastewater
title_sort interaction between diethyldithiocarbamate and cu(ii) on gold in non-cyanide wastewater
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5713075/
https://www.ncbi.nlm.nih.gov/pubmed/29140287
http://dx.doi.org/10.3390/s17112628
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