Application of partial least square on quantitative analysis of L-, D-, and DL-tartaric acid by terahertz absorption spectra |
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Authors: | Nishikiori Rika Yamaguchi Mariko Takano Keisuke Enatsu Tokujiro Tani Masahiko de Silva U Chandimal Kawashita Norihito Takagi Tatsuya Morimoto Shotaro Hangyo Masanori Kawase Masaya |
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Institution: | Faculty of Pharmaceutical Sciences, Osaka Ohtani University, 3-11-1 Nishikiori-kita, Tondabayashi, Osaka 584-8540, Japan. |
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Abstract: | Absorption spectra of polycrystalline L-, D-, and DL-tartaric acid have been measured by terahertz time domain spectroscopy (THz-TDS). Different absorption bands are observed for DL-tartaric acid and its enantiomers (L- and D-tartaric acid). This result shows that the THz-TDS can be used for distinguishing between DL-tartaric acid and enantiomers (L- and D-tartaric acid). Moreover, partial least square (PLS) can be found to improve the quantitation of L-tartaric acid in L- and DL-tartaric acid mixture by THz-TDS. |
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