| 棉基吸音毡中游离氨的测定 |
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| 引用本文： | 吴冬梅,林芳,于志强.棉基吸音毡中游离氨的测定[J].分析科学学报,2012,28(3):442-444. |
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| 作者姓名： | 吴冬梅 林芳 于志强 |
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| 作者单位： | 上海市计量测试技术研究院,上海,200233 |
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| 摘 要： | 用水浸提棉基吸音毡中的游离氨,通过浸提温度和浸提时间的选择,采用纳氏试剂分光光度法对游离氨浓度进行测定,样品测定结果的相对标准偏差为2.5%～5.0%,加标回收率为97%～109%。方法快速、简便,且具有较好的精密度和准确度,实际操作性强。
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| 关 键 词： | 棉基吸音毡 游离氨 纳氏试剂分光光度法 |
Determination of Free Ammonia in Sound Insulation Cotton Felt |
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| WU Dong-mei
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LIN Fang
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YU Zhi-qiang.Determination of Free Ammonia in Sound Insulation Cotton Felt[J].Journal of Analytical Science,2012,28(3):442-444. |
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| Authors: | WU Dong-mei LIN Fang YU Zhi-qiang |
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| Institution: | (Shanghai Institute of Measurement and Testing Technology,Shanghai 200233) |
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| Abstract: | An analytical method was presented for the determination of free ammonia in sound insulation cotton felt by Nessler’s reagent spectrophotometry.The analytical conditions including the proper extraction temperature and extraction time were optimized.The proposed method has been applied to the analysis of sound insulation cotton felt with recovery in the range of 97%～109%. |
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| Keywords: | Sound insulation cotton felt Free ammonia Nessler’s reagent spectrophotometry |
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