| 分光光度法快速测定核桃仁中总单宁含量 |
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| 引用本文： | 刘慧文. 分光光度法快速测定核桃仁中总单宁含量[J]. 现代仪器, 2010, 0(6) |
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| 作者姓名： | 刘慧文 |
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| 摘 要： | 本文研究建立分光光度法测定核桃仁样品中的总单宁含量,样品采用70%乙醇提取。在碱性条件下单宁将钨钼酸还原显色,于680nm波长处测定溶液吸光度,方法稳定、快速、准确,在0～5μg/mL浓度范围内呈线性关系,回收率90.5%～102%,相对标准偏差(RSD)1.23%
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| 关 键 词： | 分光光度法 单宁 核桃仁 |
Rapid determination of tannic in walnut kemel by spectrophotometry |
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| Liu Huiwen. Rapid determination of tannic in walnut kemel by spectrophotometry[J]. Modern Instruments, 2010, 0(6) |
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| Authors: | Liu Huiwen |
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| Abstract: | This is a method for the rapid determination of tannic in walnut kernel by spectrophotometry ,samples were treated with 70% alcohol at 90℃,detection wavelength is 680nm.The recovery was 90.5%～102% and relative standard deviations(n=5) was 1.23%.This method is simple,rapid and sensitive. |
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| Keywords: | Spectrophotometry Tannic Walnut kernel |
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