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題 名 | Determination of Cobalt in Foods Using β-Cyclodextrin Epichlorohydrin Polymer Functionalized with 1-(2-Pyridylazo)-2-naphthol=以PAN改性的β-環糊精聚合物相光度法測定食品中的微量鈷 |
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作 者 | 姜子濤; 李榮; 張久春; | 書刊名 | 藥物食品分析 |
卷 期 | 12:2 2004.06[民93.06] |
頁 次 | 頁183-188+197 |
分類號 | 412.37 |
關鍵詞 | β-環糊精聚合物; 聚合物相分光光度法; 鈷; β-cyclodextrin epichlorohydrin polymer; Polymer phase spectrophotometry; Cobalt; PAN; |
語 文 | 英文(English) |
中文摘要 | 本文報導以β-環糊精聚合物相分光光度法測定食品中微量鈷的方法。在這個方法中,1- (2-吡啶偶氮) -2-萘酚 (PAN) 首先被覆栽到β-環糊精聚合物上,並用於從樣品溶液中分離收集鈷離子,鈷離子與PAN形成的固體整合物最大吸收波長出現在573nm。鈷離子濃度在0.04-0.36μg/mL的範圍內時,吸收強度與鈷離子濃度呈現非常好的線性關係。文中同時也研究了干擾離子如銅、鉻、鐵、錳、鎳、鎘、鋅和鉬等對此測定的影響。所提出的方法用於食品中鈷之測定,結果滿意。回收率為95.8-103.7%。 |
英文摘要 | β-Cyclodextrin epichlorohydrin polymer (β-CDEP) is functionalized with 1-(2-pyridylazo)-2-naphthol (PAN) and its application for the determination of cobalt by a direct polymer phase spectrophotometry is proposed. Cobalt(II) ions are included/adsorbed by the synthesized polymer to form cobalt-PAN complex. The maximum absorbance of the complex in β-CDEP was 573 nm. The working range of the calibration graph was 0.04-0.36 μg/mL of cobalt. The interferences from copper, chromium, iron, manganese, nickel, cadmium, zinc, and molybdenum that form colored species with PAN in the polymer phase were investigated. The method was successfully applied to the determination of cobalt in food samples with satisfactory results and recoveries of 95.8-103.7%. |
本系統中英文摘要資訊取自各篇刊載內容。