| 赣南脐橙中维生素C的测定研究 |
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| 引用本文： | 廖肇燕,王科军,周南华.赣南脐橙中维生素C的测定研究[J].赣南师范学院学报,2007,28(6):63-65. |
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| 作者姓名： | 廖肇燕 王科军 周南华 |
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| 作者单位： | 1. 赣南师范学院,化学与生命科学学院,江西,赣州,341000
2. 赣南师范学院,校医院,江西,赣州,341000 |
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| 基金项目： | 江西省高等学校教学改革研究课题(JXJG-06-11-37)，赣南师范学院教学改革与研究课题“地方高师化学专业设计性实验探索与实践研究” |
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| 摘 要： | 采用紫外分光光度法测定了赣南脐橙中的维生素C含量,探讨了波长、静置时间等相干实验条件.结果表明,最大吸收波长243 nm,宜静置时间40 min,最佳pH=10,得到的回归方程ΔA=0.05496C+0.00651,相关系数r=0.9999,维生素C浓度在1.00—12.0μg/mL范围内与紫外吸收值呈良好的线性关系,利用此方法测定样品中维生素C含量最低检出限0.014μg/mL,回收率98.4%—101.0%之间,相对标准偏差RSD<5%.
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| 关 键 词： | 维生素C 脐橙 紫外分光光度法 |
| 文章编号： | 1004-8332（2007）06-0063-03 |
| 收稿时间： | 2007-06-28 |
| 修稿时间： | 2007-07-23 |
The Research of Vitamin C Determination in Gannan Navel Orange |
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| LIAO Zhao-yan,WANG Ke-jun,ZHOU Nan-hua.The Research of Vitamin C Determination in Gannan Navel Orange[J].Journal of Gannan Teachers' College(Social Science(2)),2007,28(6):63-65. |
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| Authors: | LIAO Zhao-yan WANG Ke-jun ZHOU Nan-hua |
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| Abstract: | In this paper,we used the ultraviolet spectrophotometric method to determine the nutrients of VC of Gannan navel orange,and discussed the wavelength,settled time and other coherentexperimental conditions.The result indicates that,the biggest absorption wave length is 243nm,the suitable settles time is 40min,the best pH is 10,the regression equation is ΔA = 0.05496C+ 0.00651,the correlation coefficient r= 0.9999,vitamin C density assumes good linear relations with theultraviolet absorption value when the VC density lies in 1.00-12.0g/mL.Using in this method we determine that the sample vitamin C content lowly to pick out limits is 0.014g/mL,thereturns-ratio is between 98.4% and 101.0%,relatively standard deviationRSD< 5%. |
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| Keywords: | Vitamin C Navel orange Ultraviolet spectrophotometric method |
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