| 间接原子吸收法测定饮料蔬果中维生素C |
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| 引用本文： | 莫超群,张六龄,蒋召涛,郭红莉,姚程炜,黄宝美.间接原子吸收法测定饮料蔬果中维生素C[J].化学研究与应用,2011,23(8):1099-1102. |
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| 作者姓名： | 莫超群 张六龄 蒋召涛 郭红莉 姚程炜 黄宝美 |
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| 作者单位： | 1. 绵阳师范学院化学系,四川 绵阳,621000
2. 中国气动中心第四研究所,四川 绵阳,622653 |
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| 摘 要： | 利用三价铁可被维生素C还原为二价铁,铁氰化钾可与Fe2+反应生成腺氏蓝沉淀的原理,建立了原子吸收法间接测定维生素C含量的方法.实验中考察了温度、时间、氧化剂及沉淀剂用量、酸性介质对反应的影响,选取反应在室温下进行,离心时间为5min,浓度为1.0 mg/mL的Fe3+和铁氰化钾溶液各1.00mL,酸性介质为pH=3.5...
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| 关 键 词： | 原子吸收光谱法 间接 维生素C 铁 |
Indirect determination of ascorbic (Vc) in drinks,fruit and vegetable by atomic absorption spectrometry |
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| MO Chao-qun,ZHANG Liu-ling,JIANG Zhao-tao,GONG Hong-li,YAO Cheng-wei,HUANG Bao-mei.Indirect determination of ascorbic (Vc) in drinks,fruit and vegetable by atomic absorption spectrometry[J].Chemical Research and Application,2011,23(8):1099-1102. |
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| Authors: | MO Chao-qun ZHANG Liu-ling JIANG Zhao-tao GONG Hong-li YAO Cheng-wei HUANG Bao-mei |
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| Institution: | MO Chao-qun1,ZHANG Liu-ling1,JIANG Zhao-tao1,GONG Hong-li,YAO Cheng-wei2,HUANG Bao-mei1(1.Chemical Department of MianYang Normal University,Mianyang 621000,China,2.The 4th Institute of CARDC,Mianyang 622653,China) |
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| Abstract: | A new method for indirect determination of Vc by atomic absorption spectrometry is proposed,based on the reducing properties of Fe3+.The excessive potassium ferricyanide can be quantitatively added to generate turnbull blue precipitation with Fe2+,and then the content of Vc in samples was calculated indirectly.On this experiment,the effects of temperature,reaction time,use level of oxidant(Fe3+)and potassium ferricyanide,and the certain acidity condition were studied.As a result,the buffer solutions of HAC ... |
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| Keywords: | atomic absorption spectrometry indirect Vc iron |
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