Simultaneous Detection of F−and CN−by a Simple Colorimetric Chemosensor with High Selectivity

2015 ◽  
Vol 36 (6) ◽  
pp. 1618-1624 ◽  
Author(s):  
Jung Hyun Lee ◽  
Sang Ho Lee ◽  
Yun A So ◽  
Gyeong Jin Park ◽  
Cheal Kim
Keyword(s):  
High Selectivity ◽  
Simultaneous Detection ◽  
Colorimetric Chemosensor

scholarly journals Simultaneous Detection of 13 Allergens in Thermally Processed Food Using Targeted LC–MS/MS Approach

2019 ◽  
Vol 102 (5) ◽  
pp. 1316-1329 ◽  
Author(s):  
Tairo Ogura ◽  
Robert Clifford ◽  
Uwe Oppermann
Keyword(s):  
High Selectivity ◽  
Simultaneous Detection ◽  
Processed Foods ◽  
Processed Food ◽  
Food Ingredients ◽  
Food Industries ◽  
Brazil Nuts ◽  
Large Numbers ◽  
Thermally Processed ◽  
Confirmatory Analysis

Abstract Food allergy is a major concern for public health and food industries. Because of the large numbers of food ingredients to be tested, MS is considered an alternative to existing techniques in terms of high selectivity, sensitivity, and capability to analyze multiple allergens simultaneously. In this study, we developed the method for monitoring significant peptides derived from 13 food allergens (milk, eggs, cod, shrimp, lobster, almonds, brazil nuts, cashew nuts, hazelnuts, walnuts, peanuts, wheat, and soybeans) and evaluated it in thermally processed foods (bread, cookie, fried fish, and frozen pasta). To select significant peptides to monitor, we used a bioinformatics-based approach and experimental confirmatory analysis. It was demonstrated that the developed method could detect target food ingredients from thermally processed foods successfully.

A novel colorimetric chemosensor for Cu2+ with high selectivity and sensitivity based on Rhodamine B

2015 ◽  
Vol 41 (12) ◽  
pp. 10169-10180 ◽  
Author(s):  
Changjiang Li ◽  
Kaiqiang Xiang ◽  
Yunchang Liu ◽  
Yuchuan Zheng ◽  
Baozhu Tian ◽  
...  
Keyword(s):  
Rhodamine B ◽  
High Selectivity ◽  
Colorimetric Chemosensor

A novel colorimetric chemosensor for multiple target ions in aqueous solution: simultaneous detection of Mn(II) and Fe(II)

2014 ◽  
Vol 46 ◽  
pp. 237-240 ◽  
Author(s):  
Kyung Beom Kim ◽  
Gyeong Jin Park ◽  
Hyun Kim ◽  
Eun Joo Song ◽  
Jeong Mi Bae ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Simultaneous Detection ◽  
Multiple Target ◽  
Colorimetric Chemosensor

scholarly journals Electrochemical Sensor of Double-Thiol Linked PProDOT@Si Composite for Simultaneous Detection of Cd(II), Pb(II), and Hg(II)

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 815 ◽  
Author(s):  
Mihray Abdulla ◽  
Ahmat Ali ◽  
Ruxangul Jamal ◽  
Tursunnisahan Bakri ◽  
Wei Wu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Electron Microscope ◽  
Porous Silicon ◽  
Electrochemical Performance ◽  
Metal Ions ◽  
Electrochemical Sensor ◽  
Heavy Metal Ions ◽  
High Selectivity ◽  
Simultaneous Detection ◽  
Silicon Spheres

Heavy metal ions in water, cosmetics, and arable land have become a world-wide issue as they cause a variety of diseases and even death to humans and animals when a certain level is exceeded. Therefore, it is necessary to development a new kind of sensor material for the determination of heavy metal ions. In this paper, we present an electrochemical sensor based on composite material (thiol(–SH) grafted poly(3,4-proplenedioxythiophene) (PProDOT(MeSH)2)/ porous silicon spheres (Si) composite, denoted as PProDOT(MeSH)2@Si) from the incorporation of thiol(–SH) grafted poly(3,4-proplenedioxythiophene) (PProDOT(MeSH)2) with porous silicon spheres (Si) for the electrochemical detection of heavy metal ions (Cd(II), Pb(II), and Hg(II)). The PProDOT(MeSH)2@Si composite was synthesized via a chemical oxidative polymerization method. The structure and morphology of PProDOT(MeSH)2@Si composite were characterized by Fourier transform infrared (FT-IR), Ultraviolet–visible spectroscopy (UV–Vis), X-ray diffraction (XRD), scanning electron microscope (SEM), Transmission electron microscope (TEM), and Brunauer−Emmett−Teller (BET). Furthermore, the electrochemical performance of PProDOT(MeSH)2@Si was evaluated by detecting of Cd(II), Pb(II), and Hg(II) ions using the differential pulse voltammetry (DPV) method. The relationship between structural properties and the electrochemical performance was systematically studied. The results showed that the entry of two thiol-based chains to the monomer unit resulted in an increase in electrochemical sensitivity in PProDOT(MeSH)2, which was related to the interaction between thiol group(-SH) and heavy metal ions. And, the combination of PProDOT(MeSH)2 with Si could improve the electrocatalytic efficiency of the electrode material. The PProDOT(MeSH)2@Si/GCE exhibited high selectivity and sensitivity in the rage of 0.04 to 2.8, 0.024 to 2.8, and 0.16 to 3.2 μM with the detection limit of 0.00575, 0.0027, and 0.0017 µM toward Cd(II), Pb(II), and Hg(II), respectively. The interference studies demonstrated that the PProDOT(MeSH)2@Si/GCE possessed a low mutual interference and high selectivity for simultaneous detection of Cd(II), Pb(II), and Hg(II) ions.

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