Fluorescence detection of pesticides using quantum dot materials – A review

2016 ◽  
Vol 945 ◽  
pp. 9-22 ◽  
Author(s):  
S.A. Nsibande ◽  
P.B.C. Forbes
Keyword(s):  
Quantum Dot ◽  
Fluorescence Detection

Fabrication of an “ion-imprinting” dual-emission quantum dot nanohybrid for selective fluorescence turn-on and ratiometric detection of cadmium ions

The Analyst ◽  
2016 ◽  
Vol 141 (20) ◽  
pp. 5886-5892 ◽  
Author(s):  
Jing Wang ◽  
Chenxing Jiang ◽  
Xiaoqi Wang ◽  
Ligeng Wang ◽  
Aimin Chen ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Fluorescence Detection ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Cadmium Ions ◽  
Turn On ◽  
Ratiometric Detection ◽  
Ion Imprinting ◽  
Fluorescence Turn On

A new CdTe@SiO2@CdSe nanohybrid was demonstrated for the ratiometric fluorescence detection of Cd2+via the turn-on model and “ion-imprinting” technique.

scholarly journals Quantum dot immunoassays in renewable surface column and 96-well plate formats for the fluorescence detection of botulinum neurotoxin using high-affinity antibodies

2009 ◽  
Vol 25 (1) ◽  
pp. 179-184 ◽  
Author(s):  
Marvin G. Warner ◽  
Jay W. Grate ◽  
Abby Tyler ◽  
Richard M. Ozanich ◽  
Keith D. Miller ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Fluorescence Detection ◽  
Botulinum Neurotoxin ◽  
High Affinity ◽  
Renewable Surface

Fluorescence detection of cholesterol using a nitrogen-doped graphene quantum dot/chromium picolinate complex-based sensor

2017 ◽  
Vol 5 (45) ◽  
pp. 9006-9014 ◽  
Author(s):  
Long Sun ◽  
Shanshan Li ◽  
Wei Ding ◽  
Yuewei Yao ◽  
Xueyun Yang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Fluorescence Detection ◽  
High Sensitivity ◽  
Chromium Picolinate ◽  
Graphene Quantum Dot ◽  
Nitrogen Doped ◽  
Sensitivity And Selectivity ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

A novel N-GQDs/CrPic-based cholesterol sensor with high sensitivity and selectivity has been constructed.

A Portable Biosensing Device with Magnetic Separation and Quantum Dot Bead Labeling for Simple, Rapid, and Quantitative Detection of Salmonella Typhimurium

2020 ◽  
Vol 63 (6) ◽  
pp. 1947-1955
Author(s):  
Xinge Xi ◽  
Ronghui Wang ◽  
Ping Yao ◽  
Lan Yao ◽  
Steve Tung ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Salmonella Typhimurium ◽  
Magnetic Separation ◽  
Fluorescence Detection ◽  
Pathogenic Bacteria ◽  
Economic Losses ◽  
Quantitative Detection ◽  
List Type ◽  
Control Module ◽  
Detection Chamber

HighlightsA portable biosensing device was designed, fabricated, and evaluated for Salmonella detection.A mixing, separation, and detection chamber (MSDC) was developed and used for Salmonella detection.The disposable MSDC prevented cross-contamination and reduced costs.The device was mostly automated for Salmonella detection and feasible for in-field applications.Abstract. Foodborne pathogenic bacteria have caused numerous illnesses and economic losses in the U.S. and the world. It is highly important for food industries to conduct in-field screening for pathogenic bacteria to ensure food safety. The objective of this study was to convert our previously developed optical biosensing method into a portable biosensing device to achieve simple, rapid, and quantitative detection of Salmonella Typhimurium. The device consisted of a control module, a magnetic separation module, and a fluorescence detection module. The bacteria sample, immuno-magnetic nanoparticles, and immuno-quantum dot beads were added into a mixing, separation, and detection chamber and were fully mixed in the control module. The sample was then moved to the magnetic separation module to automatically separate and concentrate the target bacteria. Finally, the fluorescence intensity was measured with the fluorescence detection module to determine the concentration of the target bacteria. The device was able to perform separation and detection of Salmonella with minimal manual operation with a detection limit of 5.4 × 102 CFU mL-1 in 1 h. The device also showed good specificity against four selected non-target bacteria. Keywords: Biosensing device, Fluorescence biosensor, Foodborne bacteria detection, Magnetic separation.

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