Publication:
Highly selective and sensitive paper-based colorimetric sensor using thiosulfate catalytic etching of silver nanoplates for trace determination of copper ions

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Issued Date

2015

Resource Type

Article

File Type

application/pdf

ISSN

32670

DOI

10.1016/j.aca.2015.01.042

Other identifier(s)

2-s2.0-84938855110

Rights Holder(s)

Scopus

Bibliographic Citation

Analytica Chimica Acta. Vol 866, (2015), p.75-83

Suggested Citation

Chaiyo S., Siangproh W., Apilux A., Chailapakul O. Highly selective and sensitive paper-based colorimetric sensor using thiosulfate catalytic etching of silver nanoplates for trace determination of copper ions. Analytica Chimica Acta. Vol 866, (2015), p.75-83. doi:10.1016/j.aca.2015.01.042 Retrieved from: https://hdl.handle.net/20.500.14740/6155

Title

Highly selective and sensitive paper-based colorimetric sensor using thiosulfate catalytic etching of silver nanoplates for trace determination of copper ions

Author(s)

Chaiyo S.
 Siangproh W.
 Apilux A.
 Chailapakul O.

Abstract

A novel, highly selective and sensitive paper-based colorimetric sensor for trace determination of copper (Cu2+) ions was developed. The measurement is based on the catalytic etching of silver nanoplates (AgNPls) by thiosulfate (S2O32-). Upon the addition of Cu2+ to the ammonium buffer at pH 11, the absorption peak intensity of AuNPls/S2O32- at 522nm decreased and the pinkish violet AuNPls became clear in color as visible to the naked eye. This assay provides highly sensitive and selective detection of Cu2+ over other metal ions (K+, Cr3+, Cd2+, Zn2+, As3+, Mn2+, Co2+, Pb2+, Al3+, Ni2+, Fe3+, Mg2+, Hg2+ and Bi3+). A paper-based colorimetric sensor was then developed for the simple and rapid determination of Cu2+ using the catalytic etching of AgNPls. Under optimized conditions, the modified AgNPls coated at the test zone of the devices immediately changes in color in the presence of Cu2+. The limit of detection (LOD) was found to be 1.0ngmL-1 by visual detection. For semi-quantitative measurement with image processing, the method detected Cu2+ in the range of 0.5-200ngmL-1(R2=0.9974) with an LOD of 0.3ngmL-1. The proposed method was successfully applied to detect Cu2+ in the wide range of real samples including water, food, and blood. The results were in good agreement according to a paired t-test with results from inductively coupled plasma-optical emission spectrometry (ICP-OES). © 2015 Elsevier B.V.

Subject(s)

Cadmium
 Cadmium compounds
 Color
 Colorimetry
 Etching
 Image processing
 Inductively coupled plasma
 Lead
 Manganese
 Mercury (metal)
 Metal ions
 Nanostructures
 Optical data processing
 Optical emission spectroscopy
 Paper
 Spectrometry
 Trace analysis
 Colorimetric detection
 Colorimetric sensors
 Copper ions
 Inductively coupled plasma-optical emission spectrometry
 Optimized conditions
 Quantitative measurement
 Silver nanoplates
 Thiosulfate
 Copper
 Aluminum
 Ammonia
 Arsenic
 Bismuth
 Cadmium
 Chromium
 Cobalt
 Copper ion
 Iron
 Lead
 Magnesium ion
 Manganese
 Mercury
 Nickel
 Potassium ion
 Silver nanoparticle
 Thiosulfate
 Zinc ion
 Copper
 Fresh water
 Ion
 Metal
 Metal nanoparticle
 Silver
 Thiosulfate
 Absorption
 Article
 Catalysis
 Catalytic etching
 Colorimetric sensor
 Colorimetry
 Concentration response
 Controlled study
 Image processing
 Inductively coupled plasma optical emission spectrometry
 Limit of detection
 Limit of quantitation
 Particle size
 PH
 Priority journal
 Quantitative analysis
 Scanning electron microscopy
 Sensor
 Spectrometry
 Surface plasmon resonance
 Transmission electron microscopy
 Analysis
 Beverage
 Catalysis
 Chemistry
 Food analysis
 Paper
 Ultraviolet spectrophotometry
 Ammonia
 Beverages
 Catalysis
 Colorimetry
 Copper
 Food Analysis
 Fresh Water
 Hydrogen-Ion Concentration
 Ions
 Limit of Detection
 Metal Nanoparticles
 Metals
 Paper
 Silver
 Spectrophotometry, Ultraviolet
 Thiosulfates

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URI

https://hdl.handle.net/20.500.14740/6155

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Scopus: Year 1983-2021

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