Multifunctional microchip-based distillation apparatus II - Aerated distillation for sulfur dioxide detection

Loise Ann N. Dayao, Chan Chiung Liu, Sheng Yen Hsu, Lemmuel L. Tayo, Wei Jhong Ju, Lung Ming Fu

Research output: Contribution to journalArticle

Abstract

A multifunctional microchip-based distillation apparatus is presented for the distilled of sulfur dioxide (SO2) in food products. The microchip is fabricated on poly(methyl methacrylate) (PMMA) substrates, and comprises a sample zone, a buffer zone, a serpentine distillation column, and a collection zone. In the process, the sample is introduced into the sample zone and is heated under carefully controlled temperature and time conditions. The resulting SO2 and water vapor are carried by nitrogen (N2) gas to the distillation column, where the SO2 is separated from the water vapor via the condensing effects of a continuous cold water flow. Finally, the SO2 is transported to the collection zone, where it is collected with hydrogen peroxide (H2O2) and its concentration determined using an alkali-based titration and paper-based detection method. A distillation efficiency of 90.5% is obtained under the optimal distillation conditions at concentrations of 20–4000 ppm. Moreover, a linear correlation (R2 = 0.9997) is observed between the experimental measurements of the SO2 concentration and the known concentration. The validity of the presented microchip-based distillation apparatus is further investigated by distilling the SO2 concentrations of 25 commodity samples. The detection results show that the deviation does not exceed 5.4% compared with the traditional official method.

Original languageEnglish
Pages (from-to)44-52
Number of pages9
JournalAnalytica Chimica Acta
Volume1071
DOIs
Publication statusPublished - 2019 Sep 13

Fingerprint

Sulfur Dioxide
Distillation
distillation
sulfur dioxide
Distillation columns
Steam
water vapor
Alkalies
Polymethyl Methacrylate
Titration
Hydrogen Peroxide
Buffers
Nitrogen
Gases
buffer zone
detection method
cold water
commodity
hydrogen peroxide
detection

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

Cite this

Dayao, Loise Ann N. ; Liu, Chan Chiung ; Hsu, Sheng Yen ; Tayo, Lemmuel L. ; Ju, Wei Jhong ; Fu, Lung Ming. / Multifunctional microchip-based distillation apparatus II - Aerated distillation for sulfur dioxide detection. In: Analytica Chimica Acta. 2019 ; Vol. 1071. pp. 44-52.
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abstract = "A multifunctional microchip-based distillation apparatus is presented for the distilled of sulfur dioxide (SO2) in food products. The microchip is fabricated on poly(methyl methacrylate) (PMMA) substrates, and comprises a sample zone, a buffer zone, a serpentine distillation column, and a collection zone. In the process, the sample is introduced into the sample zone and is heated under carefully controlled temperature and time conditions. The resulting SO2 and water vapor are carried by nitrogen (N2) gas to the distillation column, where the SO2 is separated from the water vapor via the condensing effects of a continuous cold water flow. Finally, the SO2 is transported to the collection zone, where it is collected with hydrogen peroxide (H2O2) and its concentration determined using an alkali-based titration and paper-based detection method. A distillation efficiency of 90.5{\%} is obtained under the optimal distillation conditions at concentrations of 20–4000 ppm. Moreover, a linear correlation (R2 = 0.9997) is observed between the experimental measurements of the SO2 concentration and the known concentration. The validity of the presented microchip-based distillation apparatus is further investigated by distilling the SO2 concentrations of 25 commodity samples. The detection results show that the deviation does not exceed 5.4{\%} compared with the traditional official method.",
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Multifunctional microchip-based distillation apparatus II - Aerated distillation for sulfur dioxide detection. / Dayao, Loise Ann N.; Liu, Chan Chiung; Hsu, Sheng Yen; Tayo, Lemmuel L.; Ju, Wei Jhong; Fu, Lung Ming.

In: Analytica Chimica Acta, Vol. 1071, 13.09.2019, p. 44-52.

Research output: Contribution to journalArticle

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