Suhandy, Diding (2012) L-Ascorbic Acid Prediction in Aqueous Solution Based on FTIR-ATR Terahertz Spectroscopy. Engineering in Agriculture, Environment and Food, 5 (4). pp. 152-158. ISSN 1881-8366
|
Text
5_152.pdf Download (266kB) | Preview |
Abstract
The feasibility of using attenuated total reflectance-terahertz (ATR-THz) spectroscopy for quantification of L-ascorbic acid (L-AA) in aqueous solutions was investigated. The spectra of 55 samples of L-AA solution ranging in concentration from 0-21% were acquired using Terahertz-based Fourier transform infrared (THz-FTIR) spectrometer. Spectral absorbance in the range 20 to 400 cm-1 was used in this analysis. Full spectrum partial least squares (FS-PLS) regression was used to develop and validate the calibration model for determination of L-AA. The result showed that using the pre-processing of Savitzky-Golay first derivative spectra, prediction resulted in the lowest root mean square error of prediction (RMSEP) = 2.791%. A ratio of standard deviation to prediction error (RPD) value of 4.48 was obtained.
| Item Type: | Article |
|---|---|
| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Fakultas Pertanian (FP) > Prodi Teknik Pertanian |
| Depositing User: | Dr. Diding Suhandy |
| Date Deposited: | 07 Dec 2016 03:41 |
| Last Modified: | 07 Dec 2016 03:41 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/1294 |
Actions (login required)
 |
View Item |