頁籤選單縮合
題 名 | Direct Solid-Phase Spectrophotometric Determination of Tartrazine in Soft Drinks Using β-Cyclodextrin Polymer as Support=以β-環糊精聚合物作為支撐體直接光度法測定清涼飲料中的檸檬黃 |
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作 者 | 李榮; 姜子濤; 劉雲浩; | 書刊名 | 藥物食品分析 |
卷 期 | 16:5 2008.10[民97.10] |
頁 次 | 頁91-96+106 |
分類號 | 416.46 |
關鍵詞 | 檸檬黃; β-環糊精聚合物; 固體相分光光度法; Tartrazine; Solid-phase spectrophotometry; β-cyclodextrin epichlorohydrin polymer; β-CDP; |
語 文 | 英文(English) |
英文摘要 | A sensitive and new solid-phase spectrophotometry for the determination of tartrazine in soft drinks has been developed. In this method, β-cyclodextrin epichlorohydrin polymer (β-CDP) of 60-80 mesh, which has less background absorbance in ultraviolet and visible region compared to other ion-exchanger resins, was used to support direct adsorption of tartrazine from aqueous solutions to form a solid complex (tartrazine-β-CDP complex). The effects of pH, temperature, time and ionic strength on the β- CDP including tartrazine were determined. The optimum conditions were obtained (pH, 1.0; temperature, 20°C; time, 40 min). The method was applied for the direct solid phase spectrophotometric determination of tartrazine in soft drink samples at the maximum absorption wavelength of 435 nm with satisfactory results. |
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