Laser & Optoelectronics Progress, Volume. 56, Issue 4, 041101(2019)
Detection of Benzoic Acid in Arrowroot by Terahertz Technology
The terahertz time domain spectroscopy (THz-TDS) is used to quantitatively analyze the benzoic acid content in arrowroot, and the arrowroot is with a plastic bag. The original data are subjected to the pretreatments of multiple scattering correction, baseline correction, first derivative, second derivative, and so on. The partial least square (PLS) method is used to establish a prediction model for the detection of benzoic acid content in arrowroot. The detection results show that model-determining factor for samples without plastic bags is 0.975 and the predicted root mean square error (RMSEP) is 1.126%. In contrast, that for samples with plastic bags is 0.976 and the RMSEP is 1.356%.
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Yande Liu, Xiuyang Du, Bin Li, Jun Hu, Jian Wu, Yilei Zheng. Detection of Benzoic Acid in Arrowroot by Terahertz Technology[J]. Laser & Optoelectronics Progress, 2019, 56(4): 041101
Category: Imaging Systems
Received: Aug. 3, 2018
Accepted: Sep. 4, 2018
Published Online: Jul. 31, 2019
The Author Email: Liu Yande (jxliuyd@163.com)