Detection of bacterial metabolites for the discrimination of bacteria utilizing gold nanoparticle chemiresistor sensors

2015 ◽  
Vol 220 ◽  
pp. 895-902 ◽  
Author(s):  
Melissa S. Webster ◽  
James S. Cooper ◽  
Edith Chow ◽  
Lee J. Hubble ◽  
Andrea Sosa-Pintos ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Bacterial Metabolites ◽  
Chemiresistor Sensors

Detecting and discriminating pyrethroids with chemiresistor sensors

2019 ◽  
Vol 16 (7) ◽  
pp. 553
Author(s):  
James S. Cooper ◽  
Lee J. Hubble ◽  
Edith Chow ◽  
Andrea Sosa-Pintos ◽  
Nereus Patel ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Dynamic Range ◽  
Limit Of Detection ◽  
Sensor Arrays ◽  
Insecticide Residue ◽  
Vector Borne Diseases ◽  
Chemical Residues ◽  
Broad Dynamic Range ◽  
Vector Borne ◽  
Chemiresistor Sensors

Environmental contextRegular insecticide treatments on the interior of aircraft impedes the spread of mosquitos and other pests internationally, but border protection agencies lack effective tools to ensure airlines have complied. We report the first use of chemiresistor sensors to detect and identify insecticide residue on an interior aircraft surface. The method could be developed into a tool that helps lower the risk of vector-borne diseases like malaria entering international ports. AbstractAustralia and other island nations are protected from stowaway pest vectors, like mosquitos, by aircraft disinsection – spraying the airplane interior with an insecticide. It is a simple biosecurity measure that can reduce the spread of malaria, Zika and other mosquito-borne diseases. However, checking airline compliance and the efficacy of the insecticide residue is a difficult task for border protection officials, which requires either a live fly bioassay or off-site laboratory testing. Neither of these methods are ideal for the hectic schedules of airlines. As such, we propose using gold nanoparticle chemiresistor sensor arrays, to detect and identify insecticide residue on the interior surface of aircraft. We have shown that hexanethiol functionalised sensors have a limit of detection of 3 parts per billion (ppb) for permethrin in solution and have a broad dynamic range responding to concentrations up to 1000 ppb. The chemical residues of three different insecticide products were lifted off an interior aircraft surface and identified with an array of seven uniquely functionalised sensors. This is the first ever demonstration of gold nanoparticle chemiresistor sensors being used for the analysis of chemical residues. These sensors have the potential to rapidly check the efficacy of insecticide residues on aircraft surfaces.

scholarly journals Chemiresistor Sensors Based on Gold Nanoparticle Composites

2015 ◽  
Vol 120 ◽  
pp. 799-802 ◽  
Author(s):  
Y. Daskal ◽  
R. Dittrich ◽  
J. Walter ◽  
Y. Joseph
Keyword(s):  
Gold Nanoparticle ◽  
Nanoparticle Composites ◽  
Chemiresistor Sensors

Gold Nanoparticle Chemiresistor Sensors:  Direct Sensing of Organics in Aqueous Electrolyte Solution

2007 ◽  
Vol 79 (19) ◽  
pp. 7333-7339 ◽  
Author(s):  
Burkhard Raguse ◽  
Edith Chow ◽  
Christopher S. Barton ◽  
Lech Wieczorek
Keyword(s):  
Gold Nanoparticle ◽  
Electrolyte Solution ◽  
Aqueous Electrolyte ◽  
Aqueous Electrolyte Solution ◽  
Direct Sensing ◽  
Chemiresistor Sensors

Gold Nanoparticle Chemiresistor Sensors in Aqueous Solution: Comparison of Hydrophobic and Hydrophilic Nanoparticle Films

2009 ◽  
Vol 113 (34) ◽  
pp. 15390-15397 ◽  
Author(s):  
Burkhard Raguse ◽  
Christopher S. Barton ◽  
Karl-Heinz Müller ◽  
Edith Chow ◽  
Lech Wieczorek
Keyword(s):  
Aqueous Solution ◽  
Gold Nanoparticle ◽  
Nanoparticle Films ◽  
Chemiresistor Sensors

Dielectrophoretic Assembly of Gold Nanoparticle Arrays Evaluated in Terms of Room-Temperature Resistance

2020 ◽  
Vol E103.C (2) ◽  
pp. 62-65
Author(s):  
Yoshinao MIZUGAKI ◽  
Makoto MORIBAYASHI ◽  
Tomoki YAGAI ◽  
Masataka MORIYA ◽  
Hiroshi SHIMADA ◽  
...  
Keyword(s):  
Gold Nanoparticle ◽  
Room Temperature ◽  
Nanoparticle Arrays ◽  
Temperature Resistance

Determination of microbiological activity during the processing of frost damaged sugar beets

2014 ◽  
pp. 228-231 ◽  
Author(s):  
Maciej Wojtczak ◽  
Aneta Antczak-Chrobot ◽  
Edyta Chmal-Fudali ◽  
Agnieszka Papiewska
Keyword(s):  
Sugar Beet ◽  
Microbiological Activity ◽  
Microbiological Contamination ◽  
Sugar Beets ◽  
Bacterial Metabolites ◽  
Kinetics Of

The aim of the study is to evaluate the kinetics of the synthesis of dextran and other bacterial metabolites as markers of microbiological contamination of sugar beet.

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