Study the adsorption of formaldehyde on fresh flower by using Fourier-transform infrared spectroscopy

Name: Suporl Chaimongkolpipob

Organization : King Mongkut's University of Technology Thonburi. Faculty of Science

Name: Sasitorn Ngamprasertsuk

Organization : King Mongkut's University of Technology Thonburi. Faculty of Science

Name: Nattawadee Wisitruagsakul

Organization : King Mongkut's University of Technology Thonburi. Faculty of Science

Email : nattawadee.wis@kmutt.ac.th

ThaSH: Formaldehyde -- Absorption and adsorption

ThaSH: Fourier transform infrared spectroscopy

Abstract: Formaldehyde was classified as hazardous substance, which were utilized in various applications. Formaldehyde solution was also used to preserve agricultural products as well as fresh flowers. Many methods for detection of formaldehyde on fresh flowers were developed, however explanation for structural change of the products upon formaldehyde adsorption was still not clear. In the present research, structural change at the surface of fresh flower induced by the adsorption of formaldehyde was investigated by mean of ATR-FTIR. The yellow complex compound of 3,5-diacetyl-1,4-dihydrolutidine (DDL) was formed upon extraction of formaldehyde using Nash's reagent. UV-visible absorption spectra of DDL showed the maximum absorption peaks at 412 nm. ATR-FTIR spectra of DDL also showed the vibrational absorption peaks at 1636, 1549 and 1413 cm-1, which were assigned to the vibration of C=O, N-H, and C-H bonds, respectively. Samples of fresh flower were used without preparation. The adsorption of formaldehyde on fresh flower caused the FTIR spectral changes in the range of 1700-1500 cm-1. The spectral change corresponded to the change of vibrational frequencies of functional group of lignin and cellulose in flower. Therefore, investigation of formaldehyde adsorption on fresh flower without preparation of the sample could be performed by mean of ATR-FTIR technique.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2020

Modified: 2024-10-24

Issued: 2024-10-24

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BibliograpyCitation : In the Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn in association, Thammasat University Faculty of Science and Technology. The Pure and Applied Chemistry International Conference 2020 (PACCON 2020) (PT118-120). Bangkok : Thammasat University

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