1. Department of Chemistry, Jiangxi Science and Technology Teachers College, Nanchang 330013，China 2. College of Life Science, Jiangxi Normal University, Nanchang 330027，China
Abstract：Permethrin is one of the agrochemicals used in tea gardens currently with the characteristic of being easily decomposed in light. Permethrin with β-cyclodextrin(CD) made into Inclusion Compound (IC) can increase its stability and reduce dosage to remain on the tea. Host/guest ratio is one of the important parameters of IC. The IC of permethrin with β-CD was prepared by means of liquid phase method and characterized by using IR. The result of the IR proves that the characteristic absorption peaks of the host and guest are not changed by forming their IC. The host/guest ratio of the IC measured by IR is 1∶1. Potassium sulfocyanate(KSCN) was chosen as an inside mark material, because it has only one strong absorption peak at 2 100 cm-1 and the peak was chosen as a quantitative peak of KSCN. The peak at 580 cm-1 is the characteristic absorption of the wreath vibration of β-CD and was chosen as a quantitative peak of β-CD. KSCN and β-CD were mixed with a certain quantity ratio and the mixture was analyzed by IR. The work curve of IR was established. A kind of new experimental method of measuring host/guest ratio of the IC was provided.
Key words：IR-spectra;β-cyclodextrin;Permethrin;Host-guest ratio
邵琼芳1，董 明2*，谢小红1，曾兰萍1, 冷雷雹1 . 红外光谱测定β-CD-氯菊酯包合物主-客体比的研究[J]. 光谱学与光谱分析, 2004, 24(06): 698-700.
SHAO Qiong-fang1, DONG Ming2*, XIE Xiao-hong1, ZENG Lan-ping1, LENG Lei-bao1 . Study on Measuring Host-Guest Ratio of Inclusion Compound of β-CD-Permethrin by IR . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(06): 698-700.
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