Gold Nanoparticle-Based Sensing of “Spectroscopically Silent” Heavy Metal Ions

Nano Letters ◽  
2001 ◽  
Vol 1 (4) ◽  
pp. 165-167 ◽  
Author(s):  
Youngjin Kim ◽  
Robert C. Johnson ◽  
Joseph T. Hupp
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Gold Nanoparticle ◽  
Heavy Metal Ions

APPLICATION OF SULFUR-CONTAINING CHELATES COMPLEXES WITH PROTEINS FOR HIGH-SENSITIVE DETECTION OF HEAVY METALS

2020 ◽  
pp. 313-314
Author(s):  
A. Berlina ◽  
A. Zherdev ◽  
B. Dzantiev
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Ions ◽  
Gold Nanoparticle ◽  
Heavy Metal Ions ◽  
Sensitive Detection ◽  
Mercury Ions ◽  
Protein Conjugates ◽  
Mercaptosuccinic Acid ◽  
Sulfur Containing

The usage of sulfur-containing chelate - protein conjugates in a non-competitive flow membrane analysis of heavy metal ions has been characterized. It was shown that these reagents in combination with oligonucleotide - gold nanoparticle conjugates provide the detection of 5 ng/ml and 100 ng/ml of mercury ions in water in the case of glutathione and mercaptosuccinic acid, respectively.

Analyte-triggered autocatalytic amplification combined with gold nanoparticle probes for colorimetric detection of heavy-metal ions

2017 ◽  
Vol 53 (54) ◽  
pp. 7477-7480 ◽  
Author(s):  
Juanhua Yang ◽  
Yun Zhang ◽  
Lang Zhang ◽  
Huili Wang ◽  
Jinfang Nie ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Gold Nanoparticles ◽  
Metal Ions ◽  
Gold Nanoparticle ◽  
Heavy Metal Ions ◽  
Colorimetric Detection ◽  
Detection Limits ◽  
Label Free ◽  
Nanoparticle Probes ◽  
Free Gold

This work reports a new nanosensor based on analyte-triggered autocatalytic amplification and label-free gold nanoparticles for the colorimetric detection of Hg2+, Cu2+and Ag+with detection limits less than 3 nM.

DNA-mediated gold nanoparticle signal transducers for combinatorial logic operations and heavy metal ions sensing

2015 ◽  
Vol 72 ◽  
pp. 218-224 ◽  
Author(s):  
Yuhuan Zhang ◽  
Wei Liu ◽  
Wentao Zhang ◽  
Shaoxuan Yu ◽  
Xiaoyue Yue ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Gold Nanoparticle ◽  
Heavy Metal Ions ◽  
Signal Transducers ◽  
Logic Operations
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