食品科学 ›› 2007, Vol. 28 ›› Issue (3): 308-310.
• 分析检测 • 上一篇 下一篇
王晖, 郝莉花, 王龙霞
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WANG Hui, HAO Li-Hua, WANG Long-Xia
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摘要: 本法采用火焰原子吸收法测定饮料中的铜含量,并在此基础上用硝酸稀释法处理样品,经过比较,发现该法样品前处理简便、快捷,克服了消化法繁琐、耗时以及直接进样法的易堵塞燃烧头、基线漂移等缺点,测定结果准确。该方法样品加标回收率为92%~103%,相对标准偏差为0.58%,检出限为0.015mg/L。
关键词: 火焰原子吸收分光光度法, 稀释法, 饮料, 铜
Abstract: The copper concentration in beverage has been determined by the method of flame atomic absorption spectrometry and the pre-treatment of sample has been performed by the dilution method in this study. This method has produced not only satisfactory results, but also many advantages including easy pre-treatment of sample, convenience and base line drift. It has a good sample recovery rate of 93.0%~109%. Its relative standard deviation is from 0.808% to 2.62%, and the detection limit is 0.08%.
Key words: flame atomic absorption spectrometry, dilution method, beverage, copper
王晖, 郝莉花, 王龙霞. 火焰原子吸收分光光度法快速测定饮料中的铜[J]. 食品科学, 2007, 28(3): 308-310.
WANG Hui, HAO Li-Hua, WANG Long-Xia. Fast Determination of Copper in Beverage by Flame Atomic Absorption Spectrometry[J]. FOOD SCIENCE, 2007, 28(3): 308-310.
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