比色法与碘量法测定蔬菜水果中维生素c含量的比较.doc
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比色法与碘量法测定蔬菜水果中维生素c含量的比较,比色法与碘量法测定蔬菜水果中维生素c含量的比较目 录摘要4第1章 绪论5第2章 实验内容52.1 维生素c的2,4-二硝基比色法 52.2 维生素c的碘量法9 2.3 讨论11 结论12参考文献13致谢14本次毕业设计主要研究的课题是2,4-二硝基苯肼比色法与碘量法测定水果蔬菜中维生素c含量的比较。通过这两种方法所测结...
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比色法与碘量法测定蔬菜水果中维生素C含量的比较
目 录
摘要………………………………………………………………………4
第1章 绪论………………………………………………………………5
第2章 实验内容…………………………………………………………5
2.1 维生素C的2,4-二硝基比色法 ………………………………5
2.2 维生素C的碘量法………………………………………9
2.3 讨论………………………………………………11
结论………………………………………………………………………12
参考文献…………………………………………………………………13
致谢………………………………………………………………………14
本次毕业设计主要研究的课题是2,4-二硝基苯肼比色法与碘量法测定水果蔬菜中维生素C含量的比较。通过这两种方法所测结果的比较，我们得出碘量法所测结果较稳定，平行对比数据前后相差不大于正负0.003ml，结果较精确。而比色法所测结果前后相差甚远，不准确。就实验过程而言，碘量法步骤简单易行而比色法繁琐复杂。由此得出，两种方法测定水果蔬菜中维生素C含量时，碘量法更具优势。
关键词：维生素C 2，4-二硝基苯肼比色法 碘量法
Abstract
This graduation project main research topic is 2,4- dinitrobenzene jing color method and in the iodimetric sounding fruit vegetables the Vitamin C content comparison. Through these two methods measured the result the comparison, we obtain the iodimetric to measure the result stable, around the parallel correlation data differs is not bigger than positive and negative 0.003, the result is precise. But the color method measured around the result is far from, plate out of true. Speaking of the experimental process, the iodimetric step easy and feasible but the color method tedious is complex. From this obtains, when in two methods sounding fruit vegetables Vitamin C content, the iodimetric has the superiority.
Keyword： Vitamin C 2, 4- dinitrobenzene jing color method iodimetric
目 录
摘要………………………………………………………………………4
第1章 绪论………………………………………………………………5
第2章 实验内容…………………………………………………………5
2.1 维生素C的2,4-二硝基比色法 ………………………………5
2.2 维生素C的碘量法………………………………………9
2.3 讨论………………………………………………11
结论………………………………………………………………………12
参考文献…………………………………………………………………13
致谢………………………………………………………………………14
本次毕业设计主要研究的课题是2,4-二硝基苯肼比色法与碘量法测定水果蔬菜中维生素C含量的比较。通过这两种方法所测结果的比较，我们得出碘量法所测结果较稳定，平行对比数据前后相差不大于正负0.003ml，结果较精确。而比色法所测结果前后相差甚远，不准确。就实验过程而言，碘量法步骤简单易行而比色法繁琐复杂。由此得出，两种方法测定水果蔬菜中维生素C含量时，碘量法更具优势。
关键词：维生素C 2，4-二硝基苯肼比色法 碘量法
Abstract
This graduation project main research topic is 2,4- dinitrobenzene jing color method and in the iodimetric sounding fruit vegetables the Vitamin C content comparison. Through these two methods measured the result the comparison, we obtain the iodimetric to measure the result stable, around the parallel correlation data differs is not bigger than positive and negative 0.003, the result is precise. But the color method measured around the result is far from, plate out of true. Speaking of the experimental process, the iodimetric step easy and feasible but the color method tedious is complex. From this obtains, when in two methods sounding fruit vegetables Vitamin C content, the iodimetric has the superiority.
Keyword： Vitamin C 2, 4- dinitrobenzene jing color method iodimetric
