A facile colorimetric assay for determination of salicylic acid in tobacco leaves using titanium dioxide nanoparticles

Po Jen Tseng, Chiung Yi Wang, Tzu Yun Huang, Yuan Yu Chuang, Shih-Feng Fu, Yang-Wei Lin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A facile, colorimetric method for salicylic acid (SA) detection in tobacco leaves was developed using titanium dioxide nanoparticles (TiO2 NPs). The sensing strategy is based on the reaction of TiO2 NPs with SA at pH 5.5, which results in an intramolecular ligand to metal charge transfer transition between salicylate and Ti(iv) on the surface of TiO2 NPs, and causes the TiO2 NP solution to turn yellow. The TiO2 NP probe exhibits high selectivity for SA over seven structural chemicals (4-hydroxybenzoic acid, 3-hydroxybenzoic acid, benzoic acid, acetylsalicylic acid, phenol, methyl salicylate, and jasmonic acid). Moreover, the difference in the absorbance of the TiO2 NP solution is proportional to the concentration of SA over the range from 0.02 to 1.0 mM (R2 = 0.992). By using the TiO2 NP probe in 5 mM sodium acetate (pH 5.5) solutions, the limit of detection for SA was 15.4 μM at a signal-to-noise (S/N) ratio of 3. Furthermore, the practicality of the TiO2 NP probe was validated for the determination of SA in tobacco leaves by demonstrating its advantages including simplicity and selectivity.

Original languageEnglish
Pages (from-to)1759-1765
Number of pages7
JournalAnalytical Methods
Volume6
Issue number6
DOIs
Publication statusPublished - 2014 Mar 21

Fingerprint

Salicylic acid
Salicylic Acid
Tobacco
Titanium dioxide
Assays
Nanoparticles
Acids
Sodium Acetate
Benzoic Acid
Benzoic acid
Salicylates
Phenol
Aspirin
Phenols
titanium dioxide
Charge transfer
Signal to noise ratio
Metals
Ligands
Sodium

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Engineering(all)

Cite this

Tseng, Po Jen ; Wang, Chiung Yi ; Huang, Tzu Yun ; Chuang, Yuan Yu ; Fu, Shih-Feng ; Lin, Yang-Wei. / A facile colorimetric assay for determination of salicylic acid in tobacco leaves using titanium dioxide nanoparticles. In: Analytical Methods. 2014 ; Vol. 6, No. 6. pp. 1759-1765.
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abstract = "A facile, colorimetric method for salicylic acid (SA) detection in tobacco leaves was developed using titanium dioxide nanoparticles (TiO2 NPs). The sensing strategy is based on the reaction of TiO2 NPs with SA at pH 5.5, which results in an intramolecular ligand to metal charge transfer transition between salicylate and Ti(iv) on the surface of TiO2 NPs, and causes the TiO2 NP solution to turn yellow. The TiO2 NP probe exhibits high selectivity for SA over seven structural chemicals (4-hydroxybenzoic acid, 3-hydroxybenzoic acid, benzoic acid, acetylsalicylic acid, phenol, methyl salicylate, and jasmonic acid). Moreover, the difference in the absorbance of the TiO2 NP solution is proportional to the concentration of SA over the range from 0.02 to 1.0 mM (R2 = 0.992). By using the TiO2 NP probe in 5 mM sodium acetate (pH 5.5) solutions, the limit of detection for SA was 15.4 μM at a signal-to-noise (S/N) ratio of 3. Furthermore, the practicality of the TiO2 NP probe was validated for the determination of SA in tobacco leaves by demonstrating its advantages including simplicity and selectivity.",
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A facile colorimetric assay for determination of salicylic acid in tobacco leaves using titanium dioxide nanoparticles. / Tseng, Po Jen; Wang, Chiung Yi; Huang, Tzu Yun; Chuang, Yuan Yu; Fu, Shih-Feng; Lin, Yang-Wei.

In: Analytical Methods, Vol. 6, No. 6, 21.03.2014, p. 1759-1765.

Research output: Contribution to journalArticle

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