Highly sensitive and selective naked-eye detection of Cu2+ in aqueous medium by a ninhydrin–quinoxaline derivative

2013 ◽  
Vol 176 ◽  
pp. 420-427 ◽  
Author(s):  
Ajit Kumar ◽  
Virendra Kumar ◽  
Uzra Diwan ◽  
K.K. Upadhyay
Keyword(s):  
Aqueous Medium ◽  
Eye Detection ◽  
Quinoxaline Derivative ◽  
Naked Eye ◽  
Highly Sensitive ◽  
Naked Eye Detection

Highly sensitive and selective colorimetric naked-eye detection of Cu2+ in aqueous medium using a hydrazone chemosensor

2015 ◽  
Vol 215 ◽  
pp. 241-248 ◽  
Author(s):  
Shengli Hu ◽  
Jingjing Song ◽  
Fang Zhao ◽  
Xianggao Meng ◽  
Gongying Wu
Keyword(s):  
Aqueous Medium ◽  
Eye Detection ◽  
Naked Eye ◽  
Highly Sensitive ◽  
Naked Eye Detection

Selective and sensitive colorimetric naked-eye detection of Cu2+ ion by a triazole-linked glucofuranose derivative in aqueous medium

2018 ◽  
Vol 483 ◽  
pp. 496-503 ◽  
Author(s):  
Bholanath Dolai ◽  
Samiul Islam Hazarika ◽  
Santanab Giri ◽  
Ananta Kumar Atta
Keyword(s):  
Aqueous Medium ◽  
Eye Detection ◽  
Naked Eye ◽  
Naked Eye Detection

A highly sensitive naked-eye fluorescent probe for trace hydrazine based on ‘C-CN’ bond cleavage

The Analyst ◽  
2018 ◽  
Vol 143 (18) ◽  
pp. 4354-4358 ◽  
Author(s):  
Hai Xu ◽  
Zhen Huang ◽  
Yaqian Li ◽  
Biao Gu ◽  
Zile Zhou ◽  
...  
Keyword(s):  
Detection Limit ◽  
Fluorescent Probe ◽  
Water Samples ◽  
Bond Cleavage ◽  
Eye Detection ◽  
Naked Eye ◽  
Real Water Samples ◽  
Highly Sensitive ◽  
First Time ◽  
Naked Eye Detection

The ‘C–CN’ bond cleavage was applied to the recognition of N2H4 for the first time; the obvious change in color could be used for “naked-eye” detection; the corresponding detection limit was found to be 5.81 × 10−8 M (1.65 ppb); the probe could be applied for N2H4 detection in real water samples.

scholarly journals Fluorescence and Naked-Eye Detection of Pb2+ in Drinking Water Using a Low-Cost Ionophore Based Sensing Scheme

2018 ◽  
Author(s):  
Aron Hakonen ◽  
Niklas Strömberg
Keyword(s):  
Drinking Water ◽  
Tap Water ◽  
Low Cost ◽  
Consumer Products ◽  
Lead Ion ◽  
Eye Detection ◽  
Naked Eye ◽  
Highly Sensitive ◽  
Naked Eye Detection

Drinking water contamination of lead from various environmental sources, leaching consumer products and intrinsic water-pipe infrastructure is still today a matter of great concern. Therefore, new highly sensitive and convenient Pb2+ measurement schemes are necessary, especially for in-situ measurements at a low-cost. Within this work dye/ionophore/Pb2+ co-extraction and effective water phase de-colorization was utilized for highly sensitive lead measurements and sub-ppb naked-eye detection. A low-cost ionophore Benzo-18-Crown-6-ether was used, and a simple test-tube mix and separate procedure was developed. Instrumental detection limits were in the low ppt region (LOD=3, LOQ=10), and naked-eye detection was 500 ppt. Note, however, that this sensing scheme still has improvement potential as concentrations of fluorophore and ionophore were not optimized. Artificial tap-water samples, leached by a standardized method, demonstrated drinking water application. Implications for this method are convenient in-situ lead ion measurements.

Colorimetric chemosensor based on coumarin skeleton for selective naked eye detection of cobalt (II) ion in near aqueous medium

2019 ◽  
Vol 280 ◽  
pp. 219-226 ◽  
Author(s):  
Devika Vashisht ◽  
Kamaljot Kaur ◽  
Rashmi Jukaria ◽  
Aseem Vashisht ◽  
Shweta Sharma ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Eye Detection ◽  
Naked Eye ◽  
Colorimetric Chemosensor ◽  
Naked Eye Detection

scholarly journals A highly sensitive and selective chemosensor for Pb2+ based on quinoline–coumarin

RSC Advances ◽  
2018 ◽  
Vol 8 (59) ◽  
pp. 33947-33951 ◽  
Author(s):  
Xianjiao Meng ◽  
Duanlin Cao ◽  
Zhiyong Hu ◽  
Xinghua Han ◽  
Zhichun Li ◽  
...  
Keyword(s):  
Fluorescent Chemosensor ◽  
Eye Detection ◽  
Naked Eye ◽  
Highly Sensitive ◽  
Naked Eye Detection

A highly sensitive and selective fluorescent chemosensor 1 was synthesized and used for naked eye detection of Pb2+.

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