| 超声波辅助消解凯氏定氮的研究 |
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| 引用本文： | 滕洪辉,任百祥,田雪,宋健美,黄欢. 超声波辅助消解凯氏定氮的研究[J]. 中国酿造, 2008, 0(24) |
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| 作者姓名： | 滕洪辉 任百祥 田雪 宋健美 黄欢 |
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| 作者单位： | 吉林师范大学环境工程学院; |
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| 基金项目： | 吉林省教育厅“十一五”科技研究项目(2007160); 吉林师范大学重点学科建设项目。 |
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| 摘 要： | 在传统的凯氏消解方法基础上,不用加无机盐,改电炉加热为超声波作用,消解含氮有机物;发现超声频率、功率和超声时间是主要影响因素,50kHz、400W和30min的超声条件最佳;加入少量双氧水和二氧化氯氧化助剂也可提高消解速率;与国家标准凯氏定氮法比较分析实际样品,经t检验结果无显著性差异,建立了一种绿色凯氏氮测定方法。
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| 关 键 词： | 凯氏定氮 超声波 消解 |
Study on the determination of kjeldahl nitrogen by ultrasonic assistant digestion |
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| TENG Honghui REN Baixiang TIAN Xue SONG Jianmei HUANG Huan. Study on the determination of kjeldahl nitrogen by ultrasonic assistant digestion[J]. China Brewing, 2008, 0(24) |
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| Authors: | TENG Honghui REN Baixiang TIAN Xue SONG Jianmei HUANG Huan |
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| Affiliation: | TENG Honghui REN Baixiang TIAN Xue SONG Jianmei HUANG Huan (Environmental Engineering College,Jilin Normal University,Siping 136000,China) |
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| Abstract: | Agreendetermination method of kjeldahl nitrogen was established on the basis of the traditional kjeldahl method,without inorganic salts,the organic compounds containing nitrogen were digested by Ultrasonic;the main factors that influencing the digestion of the organic compounds containing ni- trogen were ultrasonic frequency,ultrasonic power and lasted time;.50kHz,400W and 30min were the best testing conditions;H_2O_2 or ClO_2 could also im- prove the rate of digestion,the kjeldahl nitrogen of milk and surf... |
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| Keywords: | kjeldahl nitrogen ultrasonic digestion |
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