| 正交回归偏导数光度法同时测定茶叶中的铝和铁 |
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| 引用本文： | 赵凯元,王敔清. 正交回归偏导数光度法同时测定茶叶中的铝和铁[J]. 苏州科技学院学报(自然科学版), 2001, 18(3): 15-20 |
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| 作者姓名： | 赵凯元 王敔清 |
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| 作者单位： | 苏州铁道师范学院化学系,苏州,215009 |
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| 摘 要： | 在铬天青S(CAS)-亚硝基R盐-CTMAB混合显色体系中,利用还原剂Vc对铁和CTMAB对铝的吸光度的显著影响,应用正交回归设计的偏导数光度法,同时测定了茶叶和茶水中的铁和铝的含量.误差不大于4.6%.
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| 关 键 词： | 正交回归设计 偏导数光度法 铁 铝 茶叶 |
| 文章编号： | 1004-5201(2001)03-0015-06 |
| 修稿时间： | 2000-08-31 |
Simultaneous Determination of Aluminium and Iron in Tea Samples by Regress- Orthogonal Partial Derivative Spectrophotometry |
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| ZHAO Kai-yuan,WANG Yu-qing. Simultaneous Determination of Aluminium and Iron in Tea Samples by Regress- Orthogonal Partial Derivative Spectrophotometry[J]. Journal of University of Science and Technology of Suzhou, 2001, 18(3): 15-20 |
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| Authors: | ZHAO Kai-yuan WANG Yu-qing |
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| Abstract: | In this paper, through the effect of V c on Fe 3 and of CTMAB on Al 3 , aluminium and iron in the tea samples are simultaneously determined by regress orthogonal partial derivative spectrophotometry in mixed colorant of Chrome azurol S and Nitroso R salt. Analytical error is less than 4.6 %. |
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| Keywords: | regress orthogonal design partical derivative spectrophotometry iron aluminium tea |
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