| 几种蔬菜中亚硝酸盐含量的测定 |
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| 引用本文： | 余俊华,陈福北,周立邦.几种蔬菜中亚硝酸盐含量的测定[J].化工技术与开发,2011,40(6):41-42,63. |
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| 作者姓名： | 余俊华 陈福北 周立邦 |
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| 作者单位： | 广西工业职业技术学院石油与化学工程系,广西南宁,530001 |
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| 摘 要： | 用盐酸萘乙二胺比色法分别测定10种蔬菜中亚硝酸盐的含量,结果表明,在λ=538nm处,该络合物具有最大吸光度,在0～1μg·mL-1范围内,亚硝酸盐含量x(μg)与吸光度A之间具有良好的线性关系,其线性方程为y=0.0282x+0.0015,相关系数r=0.9997.从测定的芫荽等10种蔬菜当中,亚硝酸含量最高的为茄子...
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| 关 键 词： | 蔬菜 亚硝酸盐 测定 分光光度计法 |
Determination of Nitrite Content in Several Vegetables |
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| YU Jun-hua,CHEN Fu-bei,ZHOU Li-bang.Determination of Nitrite Content in Several Vegetables[J].Technology & Development of Chemical Industry,2011,40(6):41-42,63. |
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| Authors: | YU Jun-hua CHEN Fu-bei ZHOU Li-bang |
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| Affiliation: | (Department of Petrochemical Engineering,Guangxi Vocational & Technical Institute of Industry,Nanning,530001,China) |
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| Abstract: | Nitrite in 10 vegetables was determined by spectrophotometry method with N-(naphthalene-1-y1) ethane-1,2-diamine hydrochloride.The experimental results showed that at 538 nm,the absorbance and the nitrite content had good linear relation in the range of 0～1 μg/mL,the linear equation was y=0.0282x+0.0015(r=0.9997).This method was suitable to determine the nitrite in the vegetable sample with good accuracy and precision.In 10 vegetables,the contents of nitrite in eggplant and carrot was the highest of 1.365 mg·kg-1,coriander was followed(0.550 mg·kg-1),and onion was only 0.089 mg·kg-1. |
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| Keywords: | vegetable nitrite determine spectrophotometry |
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