The Qualitative and Quantitative Detection of Potassium Alum in Sweet Potato Starch Based on Terahestz Time-Domain Spectroscopy
GUAN Ai-hong1,2, LI Zhi1,2, GE Hong-yi1,2
1. College of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
2. Key Laboratory of Grain Information Processing and Control，Henan University of Technology, Ministry of Education, Zhengzhou 450001, China
Abstract：The Terahertz spectra of sweet potato starch，potassium alum and their compounds are measured in 0.3~2.0 THz using Terahertz time - domain spectroscopy ( THz-TDS) system. The refractive index and absorption coefficient spectrum are calculated. Experimental results show that potassium alum has distinct absorption features in the THz region, which can be used as fingerprint for the material identification. in addition，The Terahertz spectra of sweet potato starch doped with different percentages potassium alum are measured. The refractive index and absorption coefficient spectrum which are calculated indicate that the higher proportion of Potassium alum is, the larger the absorption coefficient in the compounds is. So is the refractive index. The results indicate that THz-TDS can be used to qualitative and quantitative detection ofpotassium alum in sweet potato starch.
管爱红，李 智，葛宏义. 红薯淀粉中添加剂明矾的定性和定量太赫兹时域光谱技术检测[J]. 光谱学与光谱分析, 2018, 38(01): 267-270.
GUAN Ai-hong, LI Zhi, GE Hong-yi. The Qualitative and Quantitative Detection of Potassium Alum in Sweet Potato Starch Based on Terahestz Time-Domain Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(01): 267-270.
[1] Ma Y H, Huang P J, Hou D B. Chemometrics and Intelligent Laboratory Systems, 2016, 150: 65.
[2] Wang Z Y, Kang K, Wang S B. Scientific Reports, 2016, 6: 36308.
[3] Xie L J, Yao Y, Ying Y B. T. Applied Spectroscopy Reviews, 2014, 49(6): 448.
[4] Ma Y H, Huang P J, Hou D B. Chemometrics and Intelligent Laboratory Systems, 2016, 150: 65.
[5] FU Xiu-hua, LI Wen-da, XIA Yi(付秀华，李闻达，夏 燚等). Journal of the Chinese Cereals and Oils Association(中国粮油学报)，2013, 28(3)：110.
[6] XIA Yi, DU Yong, ZHANG Hui-li(夏 燚, 杜 勇, 张慧丽，等). Journal of the Chinese Cereals and Oils Association(中国粮油学报)，2015 , 30(2)：103.
[7] GB 15202—2003. National Standard for Aluminum in Flour Food(面制食品中铝限量国家标准)，2003.
[8] YANG Shu-zhen, YU Kang-ning, HUANG Qi-xing(杨书珍，于康宁，黄启星，等). Journal of the Chinese Cereals and Oils Association(中国粮油学报)，2009, 24(10)：54.
[9] YANG Chen, TIAN Lu, ZHAO Kun(杨 晨，田 璐，赵 昆). Acta Photonica Sinica，2012, 41(5)：627.
[10] ZHU Li, ZHANG Guang-xin, CAO Bing-hua(朱 莉, 张光新, 曹丙花). Chinese Journal of Sensors and Actuatous(传感器技术学报), 2008, 21(1): 83.
[11] Duvillaret L, Garet F, Coutaz J. IEEE J. Selected Topic in Quantum Electronics, 1996, 2: 739.
[12] Yasuda H. Proceedings of Asia-Pacific Microwave Conference, 2008. 1.
[13] Yasuda H, Hosako I. Proceedings of Microwave Symposium, 2007. 1125.
