在非平衡稳定态的Belousov-Zhabotinsky体系中检测苏丹红
研究了以丙二酸和铈离子的初始浓度为控制参数的Belousov—Zhabotinsky(B—Z)化学振荡体系的动力学性质,在连续改变控制参数的过程中均出现了分岔现象,在逼近临界点前的非平衡稳定态对苏丹红Ⅰ进行了分析测定。考察了苏丹红Ⅰ对B—Z体系的两个非平衡稳定态的扰动,结果表明,苏丹红Ⅰ可使体系的电位发生明显的改变。当苏丹红Ⅰ的浓度分别在6.17×10^-10~3.16×10^-6mol/L和7.58×10^-7~1.55×10^-5mol/L范围内时,苏丹红Ⅰ浓度的负对数(-IgC)与电位的变化值(AE)之间呈现良好的线性关系,相关系数分别为0.9975和0.9984;检出限(LOD)可达1...
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Published in | Fēnxī huàxué Vol. 36; no. 10; pp. 1354 - 1358 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
西北师范大学化学化工学院,兰州,730070
2008
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Abstract | 研究了以丙二酸和铈离子的初始浓度为控制参数的Belousov—Zhabotinsky(B—Z)化学振荡体系的动力学性质,在连续改变控制参数的过程中均出现了分岔现象,在逼近临界点前的非平衡稳定态对苏丹红Ⅰ进行了分析测定。考察了苏丹红Ⅰ对B—Z体系的两个非平衡稳定态的扰动,结果表明,苏丹红Ⅰ可使体系的电位发生明显的改变。当苏丹红Ⅰ的浓度分别在6.17×10^-10~3.16×10^-6mol/L和7.58×10^-7~1.55×10^-5mol/L范围内时,苏丹红Ⅰ浓度的负对数(-IgC)与电位的变化值(AE)之间呈现良好的线性关系,相关系数分别为0.9975和0.9984;检出限(LOD)可达1.99×10^-10mol/L。以丙二酸初始浓度为控制参数的非平衡稳定态体系成功地测定了伪劣商品辣椒粉中的苏丹红Ⅰ,回收率在98.8%~102.8%之间。 |
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AbstractList | O6; 研究了以丙二酸和铈离子的初始浓度为控制参数的Belousov-Zhabotinsky (B-Z)化学振荡体系的动力学性质,在连续改变控制参数的过程中均出现了分岔现象, 在逼近临界点前的非平衡稳定态对苏丹红Ⅰ进行了分析测定.考察了苏丹红Ⅰ对B-Z体系的两个非平衡稳定态的扰动,结果表明,苏丹红Ⅰ可使体系的电位发生明显的改变.当苏丹红Ⅰ的浓度分别在6.17×10-10~3.16×10-6 mol/L和7.58×10-7~1.55×10-5 mol/L范围内时,苏丹红Ⅰ浓度的负对数(-lgC)与电位的变化值(ΔE)之间呈现良好的线性关系,相关系数分别为0.9975和0.9984;检出限(LOD)可达1.99×10-10 mol/L.以丙二酸初始浓度为控制参数的非平衡稳定态体系成功地测定了伪劣商品辣椒粉中的苏丹红Ⅰ,回收率在98.8%~102.8%之间. 研究了以丙二酸和铈离子的初始浓度为控制参数的Belousov—Zhabotinsky(B—Z)化学振荡体系的动力学性质,在连续改变控制参数的过程中均出现了分岔现象,在逼近临界点前的非平衡稳定态对苏丹红Ⅰ进行了分析测定。考察了苏丹红Ⅰ对B—Z体系的两个非平衡稳定态的扰动,结果表明,苏丹红Ⅰ可使体系的电位发生明显的改变。当苏丹红Ⅰ的浓度分别在6.17×10^-10~3.16×10^-6mol/L和7.58×10^-7~1.55×10^-5mol/L范围内时,苏丹红Ⅰ浓度的负对数(-IgC)与电位的变化值(AE)之间呈现良好的线性关系,相关系数分别为0.9975和0.9984;检出限(LOD)可达1.99×10^-10mol/L。以丙二酸初始浓度为控制参数的非平衡稳定态体系成功地测定了伪劣商品辣椒粉中的苏丹红Ⅰ,回收率在98.8%~102.8%之间。 |
Author | 高锦章 陈晓东 任杰 张莹莹 魏晓霞 郭淼 王文斌 王杰 杨武 |
AuthorAffiliation | 西北师范大学化学化工学院,兰州730070 |
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DocumentTitleAlternate | Determination of Sudan Ⅰ in a Non-equilibrium Stationary State of Belousov-Zhabotinsky System |
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SubjectTerms | B—Z化学振荡体系 苏丹红 非平衡稳定态 |
Title | 在非平衡稳定态的Belousov-Zhabotinsky体系中检测苏丹红 |
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