| 蔬菜中亚硝酸盐提取及测定条件的优化 |
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| 引用本文： | 李程程.蔬菜中亚硝酸盐提取及测定条件的优化[J].文山师范高等专科学校学报,2014(6):14-17. |
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| 作者姓名： | 李程程 |
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| 作者单位： | 文山学院化学与工程学院,云南文山663000 |
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| 摘 要： | 文章优化了亚硝酸盐提取和测定的最佳条件，采用重氮化偶合法对蔬菜中亚硝酸盐含量进行测定。结果表明，最佳提取温度为70℃，最佳提取时间为45 min，显色时间为15 min。该方案的线性范围为0～0.3 mg/L，线性相关系数r=0.999，标准偏差为0.012168，回收率为94.6%～104%的亚硝酸钠含量。
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| 关 键 词： | 亚硝酸盐 优化 提取 测定 |
Extraction of Nitrite in Vegetables and Optimization of Determination Condition |
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| LI Cheng-cheng.Extraction of Nitrite in Vegetables and Optimization of Determination Condition[J].Journal of Wenshan Teachers College,2014(6):14-17. |
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| Authors: | LI Cheng-cheng |
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| Institution: | LI Cheng-cheng (College of Bio-Chemistry, Wenshan University, Wenshan 663000, China ) |
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| Abstract: | In this paper, the best condition of extraction and determination is optimized. Determination of nitrite in vegetables is made by diazotization coupling. The results show that： the optimal extraction temperature is 70℃, the best extraction time is 45 min, chromogenic time is 15 min. The linear range is 0 ~ 0.3 mg/L, the linear correlation coefifcient r=0.999, the standard deviation is 0.012168, the recovery rate of nitrite content is 94.6%~104%. |
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| Keywords: | Nitrite optimization extaction determination |
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