Sensitive detection of lead ions using sodium thiosulfate and surfactant-capped gold nanoparticles

Environmental pollution has become a serious problem at a global level because of its widespread and long-term harm. Contamination by heavy metal ions and toxic heavy metals, including zinc, copper, nickel, mercury, cadmium, and lead, causes significant long-term damage to many biological systems be...

Full description

Saved in:
Bibliographic Details
Published in:Biochip journal 2016, 10(1), , pp.65-73
Main Authors: Nguyen, Nguyen Le Thao, Kim, Eun Joo, Chang, Suk-Kyu, Park, Tae Jung
Format: Article
Language:English
Subjects:
Aqueous solutions
Biomedical Engineering and Bioengineering
Biotechnology
Cadmium
Cetyltrimethylammonium bromide
Chemistry
Chemistry and Materials Science
Contamination
Electron microscopy
Gold
Heavy metals
Lead
Lead content
Lead poisoning
Light scattering
Metal ions
Nanoparticles
Original Article
Photon correlation spectroscopy
Pollution
Sodium thiosulfate
Spectroscopy
Surface properties
Thiosulfates
생물공학
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Environmental pollution has become a serious problem at a global level because of its widespread and long-term harm. Contamination by heavy metal ions and toxic heavy metals, including zinc, copper, nickel, mercury, cadmium, and lead, causes significant long-term damage to many biological systems because these metals disrupt biological activities at the cellular level. Lead is one of the most abundant metals on earth. However, lead poisoning has been related to several diseases associated with environmental pollution. Therefore, it is essential to detect and remove lead ions from aqueous solutions. Water-soluble and stable cethyltrimetylammonium bromide (CTAB)-capped gold nanoparticles (AuNPs) were applied for the sensitive detection of Pb 2+ . These CTAB-capped AuNPs were employed to selectively detoxify heavy-metal ions such as Pb 2+ ions. Detailed studies using UV/visible spectroscopy, electron microscopy, and dynamic light scattering showed that competitive binding of Pb 2+ with the CTAB-capped AuNPs changed the surface properties in the presence of sodium thiosulfate (S 2 O 3 2- ). This system is able to detect Pb 2+ with a detection limit as low as 20 nM. This method has a great potential for the simple and rapid detection of lead ions with ultrasensitive and excellent selectivity.
ISSN:1976-0280
2092-7843
DOI:10.1007/s13206-016-0109-8