A paper-based chemosensor for highly specific, ultrasensitive, and instantaneous visual detection of toxic phosgene

2019 ◽  
Vol 55 (91) ◽  
pp. 13753-13756 ◽  
Author(s):  
Lintao Zeng ◽  
Hongyan Zeng ◽  
Shuangfei Wang ◽  
Shan Wang ◽  
Ji-Ting Hou ◽  
...  
Keyword(s):  
Detection Limit ◽  
Visual Detection ◽  
High Specificity ◽  
Fast Response ◽  
Reaction Site ◽  
Fluorimetric Detection ◽  
Low Detection Limit

A chemosensor containing an o-hydroxyaniline unit as the reaction site was developed for colorimetric and fluorimetric detection of phosgene, which showed fast response (15 s), high specificity, and an extremely low detection limit.

Design of Photoionization Detector Based on the Miniature Gas Chromatography

2013 ◽  
Vol 823 ◽  
pp. 291-295 ◽  
Author(s):  
Shou Chen Chai ◽  
Peng Yang ◽  
Cheng Jia Yang ◽  
Chun Li Cai ◽  
Na Yu
Keyword(s):  
Gas Chromatography ◽  
Detection Limit ◽  
Ionization Chamber ◽  
High Sensitivity ◽  
Fast Response ◽  
Low Detection Limit ◽  
Photoionization Detector ◽  
Key Factor ◽  
The Stability ◽  
Sensitivity Detection

In the space restricted airtight environment that people lives in, detecting harmful gas by miniature gas chromatography is the practical requirement at present, however, PIDs performance is key factor that restrict the application of miniature gas chromatography, the redesign of the detectors gas route in this paper aiming at improve detectors stability observably, and schemed out miniature PID with high sensitivity, low detection limit and fast response. The result of the experiment shows that the detection limit is 0.04ppm, the sensitivity is 101mv/ppm,the stability is 0.04×10-6/24h,meeting the project requirement. Keywords: photoionization detector; ionization chamber; sensitivity; detection limit;

A ratiometric fluorescent probe for rapid and sensitive visualization of hypochlorite in living cells

RSC Advances ◽  
2014 ◽  
Vol 4 (81) ◽  
pp. 43110-43113 ◽  
Author(s):  
Jiayu Zha ◽  
Boqiao Fu ◽  
Caiqin Qin ◽  
Lintao Zeng ◽  
Xichao Hu
Keyword(s):  
Detection Limit ◽  
Fluorescent Probe ◽  
High Selectivity ◽  
Fast Response ◽  
Living Cells ◽  
Low Detection Limit ◽  
Colorimetric Response ◽  
Ratiometric Fluorescent Probe

A novel fluorescent probe displayed a colorimetric response to ClO− with high selectivity, fast response and a low detection limit (0.08 μM).

A colorimetric and ratiometric fluorescent probe for the rapid and sensitive detection of sulfite in sugar

2016 ◽  
Vol 8 (7) ◽  
pp. 1572-1576 ◽  
Author(s):  
Xiaoming Jiang ◽  
Junchao Xu ◽  
Youlai Zhang ◽  
Hongying Wang ◽  
Lintao Zeng ◽  
...  
Keyword(s):  
Detection Limit ◽  
Fluorescent Probe ◽  
High Selectivity ◽  
Fast Response ◽  
Sensitive Detection ◽  
Low Detection Limit ◽  
Ratiometric Fluorescent Probe

A colorimetric and ratiometric fluorescent probe shows a fast response and high selectivity towards sulfite with a low detection limit (12 nM).

A novel method for the detection of silver ions with carbon dots: Excellent selectivity, fast response, low detection limit and good applicability

2018 ◽  
Vol 267 ◽  
pp. 627-635 ◽  
Author(s):  
Jian-Cheng Jin ◽  
Bei-Bei Wang ◽  
Zi-Qiang Xu ◽  
Xiao-Hang He ◽  
Han-Feng Zou ◽  
...  
Keyword(s):  
Detection Limit ◽  
Carbon Dots ◽  
Silver Ions ◽  
Fast Response ◽  
Low Detection Limit ◽  
Novel Method ◽  
Excellent Selectivity

A twisted intramolecular charge transfer probe for rapid and specific detection of trace biological SO2 derivatives and bio-imaging applications

2015 ◽  
Vol 51 (6) ◽  
pp. 1154-1156 ◽  
Author(s):  
Leiming Zhu ◽  
Junchao Xu ◽  
Zhe Sun ◽  
Boqiao Fu ◽  
Caiqin Qin ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Detection Limit ◽  
Intramolecular Charge Transfer ◽  
Fast Response ◽  
Ratiometric Fluorescence ◽  
Specific Detection ◽  
Twisted Intramolecular Charge Transfer ◽  
Fluorescence Response ◽  
Low Detection Limit ◽  
Bio Imaging

A highly “reactive” probe showed a ratiometric fluorescence response to HSO3− with fast response and low detection limit (3.0 nM).

A novel FRET-based fluorescent probe for the selective detection of hydrogen sulfide (H2S) and its application for bioimaging

2018 ◽  
Vol 6 (30) ◽  
pp. 4903-4908 ◽  
Author(s):  
Qi Zhao ◽  
Fangjun Huo ◽  
Jin Kang ◽  
Yongbin Zhang ◽  
Caixia Yin
Keyword(s):  
Hydrogen Sulfide ◽  
Detection Limit ◽  
Fluorescent Probe ◽  
Nude Mice ◽  
High Sensitivity ◽  
Fast Response ◽  
Living Cells ◽  
Selective Detection ◽  
Low Detection Limit ◽  
Sensitivity And Selectivity

Herein, our group developed a fast response fluorescent probe (Flu-N3) for H2S on the basis of the 7-amino-4-methylcoumarin and fluorescein FRET system with high sensitivity and selectivity and a low detection limit of 0.031 μM. Moreover, the probe was successfully applied to image exogenous and endogenous H2S in living cells and nude mice.

scholarly journals Cu-Based Conductive MOF Grown in situ on Cu Foam as a Highly Selective and Stable Non-Enzymatic Glucose Sensor

2021 ◽  
Vol 9 ◽  
Author(s):  
Qin Hu ◽  
Jie Qin ◽  
Xiao-Feng Wang ◽  
Guang-Ying Ran ◽  
Qiang Wang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Glucose Sensor ◽  
Electrochemical Sensors ◽  
Hydrothermal Reaction ◽  
Metal Organic Framework ◽  
Copper Acetate ◽  
Fast Response ◽  
Glucose Detection ◽  
Low Detection Limit ◽  
Cu Foam

A non-enzymatic electrochemical sensor for glucose detection is executed by using a conductive metal–organic framework (MOF) Cu-MOF, which is built from the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand and copper acetate by hydrothermal reaction. The Cu-MOF demonstrates superior electrocatalytic activity for glucose oxidation under alkaline pH conditions. As an excellent non-enzymatic sensor, the Cu-MOF grown on Cu foam (Cu-MOF/CF) displays an ultra-low detection limit of 0.076 μM through a wide concentration range (0.001–0.95 mM) and a strong sensitivity of 30,030 mA μM−1 cm−2. Overall, the Cu-MOF/CF exhibits a low detection limit, high selectivity, excellent stability, fast response time, and good practical application feasibility for glucose detection and can promote the development of MOF materials in the field of electrochemical sensors.

3D porous α-Ni(OH)2 nanostructure interconnected with carbon black as a high-performance gas sensing material for NO2 at room temperature

RSC Advances ◽  
2015 ◽  
Vol 5 (123) ◽  
pp. 101760-101767 ◽  
Author(s):  
Zhenyu Chu ◽  
Hongxin Sun ◽  
He Xu ◽  
Jiao Zhou ◽  
Guo Zhang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Carbon Black ◽  
High Performance ◽  
Room Temperature ◽  
Gas Sensing ◽  
Fast Response ◽  
Sensing Properties ◽  
Low Detection Limit ◽  
Sensing Material

The 3D porous α-Ni(OH)2/carbon black nanostructure composites were fabricated via a simple refluxing method using SDBS as the template. The composites exhibited excellent sensing properties with fast response and low detection limit of NO2 at room temperature.

scholarly journals Nanoparticles Assembled CdIn2O4 Spheres with High Sensing Properties towards n-Butanol

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1714 ◽  
Author(s):  
Weiping Liu ◽  
Ximing Zhang ◽  
Zhaofeng Wang ◽  
Ruijian Wang ◽  
Chen Chen ◽  
...  
Keyword(s):  
Detection Limit ◽  
Thermal Treatment ◽  
Gas Sensor ◽  
High Performance ◽  
Solvothermal Method ◽  
Fast Response ◽  
High Response ◽  
Characterization Methods ◽  
Sensing Properties ◽  
Low Detection Limit

Cd/In-glycerate spheres are synthesized through a simple solvothermal method. After thermal treatment, these Cd/In-glycerates can be converted into CdIn2O4 spheres. Many characterization methods were performed to reveal the microstructure and morphology of the CdIn2O4. It was found that pure CdIn2O4 phase was obtained for the Cd/In starting materials at ratios of 1:1.6. The CdIn2O4 spheres are composed by a large number of nanoparticles subunits. The CdIn2O4 sphere-based sensor exhibited a low detection limit (1 ppm), high response (81.20 to 500 ppm n-butanol), fast response (4 s) and recovery (10 s) time, good selectivity, excellent repeatability, and stability at 280 °C. Our findings highlight the possibility to develop a novel gas sensor based on CdIn2O4 for application in n-butanol detection with high performance.

A fast response & recovery acetone gas sensor based on BiFeO3 nanomaterials with high sensitivity and low detection limit

2017 ◽  
Vol 29 (3) ◽  
pp. 2193-2200 ◽  
Author(s):  
Yamei Zhang ◽  
Hongxiang Xu ◽  
Songtao Dong ◽  
Ruqu Han ◽  
Xiaomei Liu ◽  
...  
Keyword(s):  
Detection Limit ◽  
Gas Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Low Detection Limit ◽  
Response Recovery
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