Extinction-to-Absorption Ratio for Sensitive Determination of the Size and Dielectric Function of Gold Nanoparticles

ACS Nano ◽  
2020 ◽  
Vol 14 (12) ◽  
pp. 17597-17605
Author(s):  
Aleksa Djorović ◽  
Steven J. Oldenburg ◽  
Johan Grand ◽  
Eric C. Le Ru
Keyword(s):  
Gold Nanoparticles ◽  
Dielectric Function ◽  
Absorption Ratio ◽  
Sensitive Determination

A gold nanoparticles - Graphene based electrochemical sensor for sensitive determination of nitrazepam

2018 ◽  
Vol 830-831 ◽  
pp. 63-71 ◽  
Author(s):  
Luminiţa Fritea ◽  
Florin Bănică ◽  
Traian Octavian Costea ◽  
Liviu Moldovan ◽  
Ciprian Iovan ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Sensor ◽  
Sensitive Determination

scholarly journals Direct, Sensitive Determination of Trace Amounts of Dissolved Ferric Iron in Natural Water by Light Absorption Ratio Variation Spectrometry

2005 ◽  
Vol 88 (4) ◽  
pp. 1231-1235
Author(s):  
Hong-Wen Gao ◽  
Ling Chen ◽  
Qiao-Zhi Yang
Keyword(s):  
Natural Water ◽  
Light Absorption ◽  
Cetylpyridinium Chloride ◽  
Direct Determination ◽  
Break Point ◽  
Absorption Ratio ◽  
Ratio Variation ◽  
Variation Approach ◽  
Sensitive Determination

Abstract The chromophore eriochrome cyanine R (ECR) was used to sensitively coordinate Al(III) and Fe(III) in the presence of cetylpyridinium chloride (CPC) at pH 4.8. Trace amounts of Fe(III) can displace Al(III) from the Al(ECR)(CPC) ternary complex to form the Fe(ECR)(CPC) complex. The composition of the complexes was determined by the break point approach. The competitive displacement complexation was sensitive and highly selective, even if no masking reagent was added. An ongoing novel spectrophotometry, named the light-absorption ratio variation approach, was applied to the direct determination of Fe(III) in natural water with recovery between 92.5 and 106%. The detection limit was only 9 ng/mL Fe(III).

scholarly journals The highly sensitive determination of serotonin by using gold nanoparticles (Au NPs) with a localized surface plasmon resonance (LSPR) absorption wavelength in the visible region

RSC Advances ◽  
2020 ◽  
Vol 10 (51) ◽  
pp. 30858-30869
Author(s):  
Phuong Que Tran Do ◽  
Vu Thi Huong ◽  
Nguyen Tran Truc Phuong ◽  
Thi-Hiep Nguyen ◽  
Hanh Kieu Thi Ta ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Visible Region ◽  
Localized Surface Plasmon ◽  
Au Nps ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Sensitive Determination

The development of improved methods for the synthesis of monodisperse gold nanoparticles (Au NPs) is of high priority because they can be used as substrates for surface-enhanced Raman scattering (SERS) applications relating to biological lipids.

Highly selective naked eye detection of vitamin B1 in the presence of other vitamins using graphene quantum dots capped gold nanoparticles

2019 ◽  
Vol 43 (5) ◽  
pp. 2111-2117 ◽  
Author(s):  
B. Sinduja ◽  
S. Abraham John
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Graphene Quantum Dots ◽  
Vitamin B1 ◽  
Eye Detection ◽  
Naked Eye ◽  
Sensitive Determination ◽  
Naked Eye Detection

The application of Au-GQDs towards the sensitive determination of thiamine was demonstrated.

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