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 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 Marine Toxins Detection by Biosensors Based on Aptamers

Toxins ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 1 ◽  
Author(s):  
Wei Ye ◽  
Taomei Liu ◽  
Weimin Zhang ◽  
Muzi Zhu ◽  
Zhaoming Liu ◽  
...  
Keyword(s):  
Detection Limit ◽  
Sensitivity And Specificity ◽  
High Efficiency ◽  
Rapid Development ◽  
High Sensitivity ◽  
Detection Methods ◽  
Marine Toxins ◽  
Time Saving ◽  
Low Detection Limit ◽  
The Future

Marine toxins cause great harm to human health through seafood, therefore, it is urgent to exploit new marine toxins detection methods with the merits of high sensitivity and specificity, low detection limit, convenience, and high efficiency. Aptasensors have emerged to replace classical detection methods for marine toxins detection. The rapid development of molecular biological approaches, sequencing technology, material science, electronics and chemical science boost the preparation and application of aptasensors. Taken together, the aptamer-based biosensors would be the best candidate for detection of the marine toxins with the merits of high sensitivity and specificity, convenience, time-saving, relatively low cost, extremely low detection limit, and high throughput, which have reduced the detection limit of marine toxins from nM to fM. This article reviews the detection of marine toxins by aptamer-based biosensors, as well as the selection approach for the systematic evolution of ligands by exponential enrichment (SELEX), the aptamer sequences. Moreover, the newest aptasensors and the future prospective are also discussed, which would provide thereotical basis for the future development of marine toxins detection by aptasensors.

A comparative study of electrocatalytic oxidation of glucose on conductive Ni-MOF nanosheet arrays with different ligands

2020 ◽  
Vol 44 (41) ◽  
pp. 17849-17853
Author(s):  
Yanxia Qiao ◽  
Rui Zhang ◽  
Fangyuan He ◽  
Wenli Hu ◽  
Xiaowei Cao ◽  
...  
Keyword(s):  
Detection Limit ◽  
Comparative Study ◽  
Response Time ◽  
Electrocatalytic Oxidation ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Serum Samples ◽  
Nanosheet Arrays ◽  
Oxidation Of Glucose

A glucose sensor based on conductive Ni-MOF nanosheet arrays/CC exhibits a fast response time, a low detection limit, a high sensitivity, and it can also be applied for the detection of glucose in human serum samples.

scholarly journals A highly selective and sensitive fluorescent probe for lactate dehydrogenase based on ultrabright adenosine monophosphate capped gold nanoclusters

RSC Advances ◽  
2017 ◽  
Vol 7 (22) ◽  
pp. 13438-13443 ◽  
Author(s):  
Jiao Liu ◽  
Hong-Wei Li ◽  
Yuqing Wu
Keyword(s):  
Lactate Dehydrogenase ◽  
Detection Limit ◽  
Fluorescent Probe ◽  
Fluorescence Probe ◽  
Gold Nanoclusters ◽  
High Sensitivity ◽  
Adenosine Monophosphate ◽  
Low Detection Limit ◽  
Sensitivity And Selectivity

The ultrabright AuNCs@AMP are used as fluorescence probe to detect lactate dehydrogenase (LDH) with high sensitivity and selectivity, showing an extremely low detection limit of 0.2 nM (26 pg μL−1, 0.8 U L−1).

scholarly journals Nanostructured copper selenide as an ultrasensitive and selective non-enzymatic glucose sensor

2021 ◽  
Author(s):  
Siddesh Umapathi ◽  
Harish Singh ◽  
Jahangir Masud ◽  
Manashi Nath
Keyword(s):  
Detection Limit ◽  
High Efficiency ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Copper Selenide ◽  
Glucose Detection ◽  
Applied Potential ◽  
Detection Range ◽  
Low Detection Limit ◽  
Linear Detection

CuSe nanostructures exhibit high-efficiency for glucose detection with high sensitivity (19.419 mA mM−1 cm−2) and selectivity at low applied potential (0.15 V vs. Ag|AgCl), low detection limit (0.196 μM) and linear detection range (100 nM to 40 μM).

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).

An ISFET-based penicillin sensor with high sensitivity, low detection limit and long lifetime

2001 ◽  
Vol 76 (1-3) ◽  
pp. 519-526 ◽  
Author(s):  
A. Poghossian ◽  
M.J. Schöning ◽  
P. Schroth ◽  
A. Simonis ◽  
H. Lüth
Keyword(s):  
Detection Limit ◽  
High Sensitivity ◽  
Low Detection Limit ◽  
Long Lifetime
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