Colorimetric sensing of histamine in aqueous solution by a system composed of alizarin complexone and Ni2+ complex via indicator displacement approach

2021 ◽  
pp. 153088
Author(s):  
Yasumasa Fukushima ◽  
Shunichi Aikawa
Keyword(s):  
Aqueous Solution ◽  
Colorimetric Sensing ◽  
Displacement Approach ◽  
Alizarin Complexone

Colorimetric Detection of Trace Arsenic(III) in Aqueous Solution Using Arsenic Aptamer and Gold Nanoparticles

2014 ◽  
Vol 67 (5) ◽  
pp. 813 ◽  
Author(s):  
Minglei Yu
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Detection Limit ◽  
Colorimetric Assay ◽  
Colorimetric Detection ◽  
Colour Change ◽  
Colorimetric Sensing ◽  
Detection Range ◽  
Colorimetric Indicator ◽  
Blue Solution

In this study, trace arsenic(iii) (AsIII) in aqueous solution was detected by applying a classical aptamer-based gold nanoparticles colorimetric sensing strategy. An arsenic aptamer was used as a sensing probe and gold nanoparticles as a colorimetric indicator. In the absence of AsIII, the gold nanoparticles were stabilised by the arsenic aptamer and remained dispersed at high NaCl concentrations, displaying a red solution. Contrarily, in the presence of AsIII, the gold nanoparticles were prone to aggregation, owing to the formation of aptamer–AsIII complex between the arsenic aptamer and AsIII, and thus exhibited a blue solution. By monitoring the colour change, a simple and fast colorimetric assay for AsIII was established with a detection range of 1.26–200 ppb and a detection limit of 1.26 ppb. Because this colorimetric assay only involves common reagents and can be assessed visually, it holds great potential for arsenic(iii) monitoring in environment-related and other applications.

Selective colorimetric sensing of fluoride in an aqueous solution by amino-naphthoquinone and its Co(ii), Ni(ii), Cu(ii) and Zn(ii) complexes – effect of complex formation on sensing behaviour

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91265-91274 ◽  
Author(s):  
C. Parthiban ◽  
Samuele Ciattini ◽  
Laura Chelazzi ◽  
Kuppanagounder P. Elango
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Metal Ions ◽  
Colorimetric Sensing

The complexation of metal ions with amino-naphthoquinone was found to not only enhance the HBD property of the N–H group but also accomodates ≥50% of water in the sensing medium.

Green synthesized silver nanoparticles for selective colorimetric sensing of Hg2+ in aqueous solution at wide pH range

The Analyst ◽  
2013 ◽  
Vol 138 (15) ◽  
pp. 4370 ◽  
Author(s):  
Selvan Sukanya Ravi ◽  
Lawrence Rene Christena ◽  
Nagarajan SaiSubramanian ◽  
Savarimuthu Philip Anthony
Keyword(s):  
Aqueous Solution ◽  
Silver Nanoparticles ◽  
Colorimetric Sensing ◽  
Wide Ph Range ◽  
Ph Range ◽  
Green Synthesized Silver Nanoparticles

Imatinib intermediate as a two in one dual channel sensor for the recognition of Cu2+and I−ions in aqueous media and its practical applications

2014 ◽  
Vol 43 (35) ◽  
pp. 13299-13306 ◽  
Author(s):  
Samadhan R. Patil ◽  
Jitendra P. Nandre ◽  
Devising Jadhav ◽  
Shilpa Bothra ◽  
S. K. Sahoo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Media ◽  
Colorimetric Sensing ◽  
Practical Applications ◽  
Dual Channel

An imatinib intermediate was developed for the colorimetric sensing of Cu2+ions in aqueous solution.

Colorimetric sensing of chromium(vi) ions in aqueous solution based on the leaching of protein-stabled gold nanoparticles

2016 ◽  
Vol 8 (27) ◽  
pp. 5526-5532 ◽  
Author(s):  
Guo Jian-feng ◽  
Hou Chang-jun ◽  
Yang Mei ◽  
Huo Dan-qun ◽  
Li Jun-jie ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Colorimetric Sensing ◽  
Chromium Vi

Herein, we developed a simple, sensitive and non-aggregation-based method for the selective colorimetric detection of chromium(vi) ions (Cr(vi)) in an aqueous solution.

New fluorescent sensor for Cu2+ and S2− in 100% aqueous solution based on displacement approach

2014 ◽  
Vol 43 (15) ◽  
pp. 5815 ◽  
Author(s):  
Yan Fu ◽  
Qing-Chuan Feng ◽  
Xiu-Juan Jiang ◽  
Hong Xu ◽  
Min Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescent Sensor ◽  
Displacement Approach
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