A Handy and Accessible Tool for Identification of Sn(II) in Toothpaste: Inclination to an Eco-Friendly Environment

2021 ◽  
Author(s):  
Shampa Kundu ◽  
Khai-Nghi Truong ◽  
Shrabani Saha ◽  
Kari Rissanen ◽  
Prithidipa Sahoo
Keyword(s):  
Metal Ions ◽  
Potential Application ◽  
Quantum Chemical ◽  
Paper Strip ◽  
Selective Detection ◽  
Binding Mechanism ◽  
Mouth Wash ◽  
Nanomolar Range ◽  
Nmr Titrations ◽  
C Nmr

Abstract An easily accessible colorimetric probe, a carbazole-naphthaldehyde conjugate (CNP), was successfully prepared for the selective and sensitive recognition of Sn(II) in different commercially-available toothpaste and mouth wash samples. The binding mechanism of CNP for Sn2+ was confirmed by UV-Vis, 1H and 13C NMR titrations. The proposed sensing mechanism was supported by quantum chemical calculations. Selective detection of Sn(II) in the nanomolar range (85 nM), among other interfering metal ions, makes it exclusive. Moreover, Sn2+ can be detected with a simple paper strip from toothpaste, which makes this method handy and easy accessible. The potential application of this system for monitoring Sn2+ can be used as an expedient tool in environmental and industrial purpose.

Synthesis of N2, N6-bis(5-methylthiazol-2-yl)pyridine-2,6-dicarboxamide fluoroscent sensor for detection of Cu2+ and Ni2+ Ions

Drug Research ◽  
2021 ◽  
Author(s):  
Anuroop Kumar ◽  
Netrapal Singh ◽  
Mordhwaj Kumar ◽  
Uma Agarwal
Keyword(s):  
Spectral Analysis ◽  
Detection Limit ◽  
Metal Ions ◽  
1H Nmr Spectroscopy ◽  
Stoichiometric Ratio ◽  
Selective Detection ◽  
Ft Ir ◽  
Uv Visible ◽  
Complexes With Metal Ions ◽  
Competitive Ions

AbstractThis article reports an amide based Chemosensor used for selective detection of divalent Cu+2 and Ni+2 ions via Fluorescence turn off. The selective sensing ability of Chemosensor was investigated in presence of different metal ions Mg2+, Ag+, Fe2+, K+, Cu2+, Ni2+, Hg2+, Pb2+, Mn2+, Pd2+, Cd2+ and Mn3+ as competitive ions. The receptor i. e. Chemosensor formed complexes with metal ions in 1:1 stoichiometric ratio. The detection limit and binding constant calculated as 1.92×10–4 and 1.4×10–4 M and 2.16×103 M−1 and 3.09×103 M−1 for Cu2+ and Ni2+ions respectively. The complexes were characterized by UV/visible, FT-IR, 13C NMR and 1H NMR spectroscopy. Further the structure and Crystallinity were calculated by P-XRD spectral analysis. The crystallinity found to be 65.27 and 67.87% respectively

scholarly journals Highly sensitive and selective colorimetric detection of dual metal ions (Hg2+ and Sn2+) in water: an eco-friendly approach

RSC Advances ◽  
2021 ◽  
Vol 11 (24) ◽  
pp. 14700-14709
Author(s):  
Rintumoni Paw ◽  
Moushumi Hazarika ◽  
Purna K. Boruah ◽  
Amlan Jyoti Kalita ◽  
Ankur K. Guha ◽  
...  
Keyword(s):  
Metal Ions ◽  
Ag Nanoparticles ◽  
Limit Of Detection ◽  
Colorimetric Detection ◽  
Garlic Extract ◽  
Selective Detection ◽  
Highly Sensitive ◽  
Dual Metal

Synthesis of Ag nanoparticles using Allin based garlic extract for highly sensitive and selective detection of metal ions Hg2+ and Sn2+ in water. The limit of detection (LoD) for Hg2+ and Sn2+ ions were found as 15.7 nM and 11.25 nM respectively.

scholarly journals Evidence of the Existence of 2:1 Guest–Host Complexes between Diclofenac and Cyclodextrins in D2O Solutions. A 1H and 13C NMR Study on Diclofenac/β-Cyclodextrin and Diclofenac/2-Hydroxypropyl-β-cyclodextrin Systems

1999 ◽  
Vol 23 (7) ◽  
pp. 414-415
Author(s):  
Adele Mucci ◽  
Luisa Schenetti ◽  
Maria A. Vandelli ◽  
Barbara Ruozi ◽  
Flavio Forni
Keyword(s):  
13C Nmr ◽  
Sodium Salt ◽  
Multiple Equilibria ◽  
Diclofenac Sodium ◽  
1H And 13C Nmr ◽  
Nmr Study ◽  
Nmr Techniques ◽  
Nmr Titrations ◽  
C Nmr

The interaction of diclofenac sodium salt (DCFNa) and two cyclodextrins, β-cyclodextrin (βCD) and 2-hydroxypropyl-β-cyclodextrin (HPβCD), studied in D2O solution with different NMR techniques (1H, 13C NMR, ROESY experiments, NMR titrations), shows the existence of multiple equilibria involving 1:1 and 2:1 guest–host complexes.

Selective Detection of Mercury Ions Based on Tin Oxide Quantum Dots: Performance and Fluorescence Enhancement Model

2021 ◽  
Author(s):  
Jianqiao Liu ◽  
Yu Bai ◽  
Jingcheng Shi ◽  
Qing Yu ◽  
Jifei Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Metal Ions ◽  
Tin Oxide ◽  
Fluorescent Probes ◽  
Fluorescence Enhancement ◽  
Selective Detection ◽  
Mercury Ions ◽  
Metal Ions Detection

The superiority of fluorescence-based method in the metal ions detection are well developed, however, the current quantum dots (QDs) fluorescent probes for mercury ions (Hg2+) still have many limitations, such...

Two azo-functionalized luminescent 3D Cd(ii) MOFs for highly selective detection of Fe3+ and Al3+

2018 ◽  
Vol 42 (15) ◽  
pp. 12865-12871 ◽  
Author(s):  
Santanu Chand ◽  
Manas Mondal ◽  
Shyam Chand Pal ◽  
Arun Pal ◽  
Sinchan Maji ◽  
...  
Keyword(s):  
Metal Ions ◽  
Selective Detection ◽  
Functional Sites

Two 3D luminescent Cd(ii) MOFs (Cd-MOF-1 and Cd-MOF-2) exposing azo functional sites displayed selective detection of Fe3+ and Al3+ metal ions with high sensitivities.

An efficient “Ratiometric” fluorescent chemosensor for the selective detection of Hg2+ ions based on phosphonates: its live cell imaging and molecular keypad lock applications

2019 ◽  
Vol 11 (7) ◽  
pp. 901-916 ◽  
Author(s):  
Gujuluva Gangatharan Vinoth Kumar ◽  
Ramaraj Sayee Kannan ◽  
Thomas Chung-Kuang Yang ◽  
Jegathalaprathaban Rajesh ◽  
Gandhi Sivaraman
Keyword(s):  
Metal Ions ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Live Cell ◽  
Fluorescent Chemosensor ◽  
Selective Detection

Herein, we have reported the ability of smart chemosensors (L1 and L2) to selectively detect Hg(ii) ions over other metal ions and examined this phenomenon by various spectroscopy techniques.

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