scholarly journals Using Smartphone APP To Determine the CN– Concentration Quantitatively in Tap Water: Synthesis of the Naked-Eye Colorimetric Chemosensor for CN– and Ni2+ Based on Benzothiazole

ACS Omega ◽  
2020 ◽  
Vol 5 (5) ◽  
pp. 2488-2494 ◽  
Author(s):  
Cui-Bing Bai ◽  
Xin-Yu Liu ◽  
Jie Zhang ◽  
Rui Qiao ◽  
Kun Dang ◽  
...  
Keyword(s):  
Tap Water ◽  
Smartphone App ◽  
Naked Eye ◽  
Colorimetric Chemosensor

Chromogenic naked-eye detection of copper ion and fluoride

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86463-86472 ◽  
Author(s):  
Ye Won Choi ◽  
Jae Jun Lee ◽  
Ga Rim You ◽  
Sun Young Lee ◽  
Cheal Kim
Keyword(s):  
Color Change ◽  
Copper Ion ◽  
Eye Detection ◽  
Naked Eye ◽  
Colorimetric Chemosensor ◽  
Naked Eye Detection

Colorimetric chemosensor was reported for detection of Cu2+ and F−via the color change from colorless to yellow and to orange.

A novel displacement-type colorimetric chemosensor for the detection of Cu2+and GSH in aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74400-74408 ◽  
Author(s):  
Ga Rim You ◽  
Hyo Jung Jang ◽  
Tae Geun Jo ◽  
Cheal Kim
Keyword(s):  
Aqueous Solution ◽  
Sequential Detection ◽  
Naked Eye ◽  
Colorimetric Chemosensor

A new selective and sensitive chemosensor1for the sequential detection of Cu2+and GSHvianaked-eye has been developed.

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

A new hydrazone-based colorimetric chemosensor for naked-eye detection of copper ion in aqueous medium

2019 ◽  
Vol 43 (9-10) ◽  
pp. 426-430
Author(s):  
Shao-Min Shi ◽  
Qiao Li ◽  
Sheng-Li Hu
Keyword(s):  
Metal Ions ◽  
Copper Ion ◽  
Colour Change ◽  
Selective Recognition ◽  
X Ray Diffraction ◽  
Binding Properties ◽  
X Ray ◽  
Naked Eye ◽  
Colorimetric Chemosensor ◽  
Naked Eye Detection

A new hydrazone-based colorimetric Cu2+ chemosensor is synthesized. Its structure was confirmed by single-crystal X-ray diffraction. Its binding properties towards various metal ions are examined through absorption spectroscopy. In aqueous THF solution, the chemosensor exhibits selective recognition towards Cu2+ over other metal ions with a colour change from colourless to pink. The complex formed between the chemosensor and Cu2+ ions forms a 2:1 stoichiometry with an association constant of 2.46 × 108M−2. The analytical detection limit for Cu2+ by the naked eye is as low as 10.0 μM.

Effect of Nitro Group on Imidazole Derivative as Colorimetric Chemosensor for Amines

2020 ◽  
Vol 840 ◽  
pp. 385-391
Author(s):  
Trisno Afandi ◽  
Bambang Purwono ◽  
Winarto Haryadi
Keyword(s):  
Detection Limit ◽  
Nitro Group ◽  
Ammonium Acetate ◽  
Color Change ◽  
Imidazole Derivative ◽  
Naked Eye ◽  
Colorimetric Chemosensor ◽  
Light Orange

Chemosensor of imidazole derivative (4-(4,5-diphenyl-1H-imidazol-2-yl)-2-methoxy-6-nitrophenol) (IMD-1) has been synthesized and tested for amines sensor. IMD-1 was synthesized from the reaction of 5-nitrovanillin, 1,2-diphenylethane-1,2-dione (benzil), and ammonium acetate using reflux method. IMD-1 showed fast respond and color change from light orange to orange in naked eye compared with the imidazole derivative without nitro group (IMD-0). The IMD-1 could detect butylamine quantitatively with detection limit of 1.03 x 10-4 M.

A Simple Colorimetric Chemosensor for Naked Eye Detection of Cyanide Ion

2016 ◽  
Vol 26 (5) ◽  
pp. 1857-1864 ◽  
Author(s):  
Parisa Gholamzadeh ◽  
Ghodsi Mohammadi Ziarani ◽  
Negar Lashgari ◽  
Alireza Badiei ◽  
Alireza Shayesteh ◽  
...  
Keyword(s):  
Eye Detection ◽  
Cyanide Ion ◽  
Naked Eye ◽  
Colorimetric Chemosensor ◽  
Naked Eye Detection

A simple pyridine-based colorimetric chemosensor for highly sensitive and selective mercury(II) detection with the naked eye

2015 ◽  
Vol 69 (4) ◽  
Author(s):  
Jian-Ting Pan ◽  
Fei Zhu ◽  
Lin Kong ◽  
Long-Mei Yang ◽  
Xu-Tang Tao ◽  
...  
Keyword(s):  
Naked Eye ◽  
Colorimetric Chemosensor ◽  
Highly Sensitive ◽  
Derivatives Of

AbstractTwo easily-prepared pyridine-based derivatives of (Z)-2-(4-amino-phenyl)-3-(pyridine-4-yl)acrylonitrile (I) and (Z)-2-phenyl-3-(pyridin-4-yl)acrylonitrile (II ) were designed, synthesised and characterised. Due to the formation of a complex with Hg

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