| 热导法测定天然胶乳中氮含量 |
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| 引用本文： | 王堃,王海仙,姚毅荣,侯英涛,严莎.热导法测定天然胶乳中氮含量[J].橡胶工业,2018,65(12):1413-1415. |
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| 作者姓名： | 王堃 王海仙 姚毅荣 侯英涛 严莎 |
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| 作者单位： | 天津出入境检验检疫局化矿金属材料检测中心,天津出入境检验检疫局化矿金属材料检测中心,天津出入境检验检疫局化矿金属材料检测中心,天津出入境检验检疫局化矿金属材料检测中心,天津出入境检验检疫局化矿金属材料检测中心 |
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| 基金项目： | 天津出入境检验检疫局化矿金属材料检测中心科技计划项目(2017HKJ05)；国家质量监督检验检疫总局科技计划项目(2016IK258) |
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| 摘 要： | 运用LECO CHN 628元素分析仪(热导法)测定天然胶乳中的氮含量。通过实验数据确定了仪器工作参数,燃烧模式以及样品称样量等实验条件。在此条件下选取三组样品进行分析,测定结果与凯氏定氮法测定结果相比无显著性差异。本方法具有操作简单快速、精密度高等优点。
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| 关 键 词： | 热导法 天然胶乳 氮含量 显著性检验 |
| 收稿时间： | 2018/4/9 0:00:00 |
| 修稿时间： | 2018/4/9 0:00:00 |
Thermal Conductivity method for determination of Nitrogen in Natural Latex |
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| WANG Kun,WANG Hai-xian,YAO Yi-rong,HOU Ying-tao and YAN Sha.Thermal Conductivity method for determination of Nitrogen in Natural Latex[J].China Rubber Industry,2018,65(12):1413-1415. |
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| Authors: | WANG Kun WANG Hai-xian YAO Yi-rong HOU Ying-tao and YAN Sha |
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| Affiliation: | Chemicals,Minerals Metallic Materials Inspection Center,Tianjin Entry-Exit Inspection and Quarantine Bureau,Chemicals,Minerals Metallic Materials Inspection Center,Tianjin Entry-Exit Inspection and Quarantine Bureau,Chemicals,Minerals Metallic Materials Inspection Center,Tianjin Entry-Exit Inspection and Quarantine Bureau,Chemicals,Minerals Metallic Materials Inspection Center,Tianjin Entry-Exit Inspection and Quarantine Bureau,Chemicals,Minerals Metallic Materials Inspection Center,Tianjin Entry-Exit Inspection and Quarantine Bureau |
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| Abstract: | The LECO CHN-628 elemental analyzer (by Thermal conductivity method) was used for determination of nitrogen in natural rubber latex. Determined the instrument operating parameters, combustion mode and sample weight by experimental data. Three sets of samples were analyzed in this condition, the results showed that there was no significant difference between conductivity detection method and the Kjeldahl. This method has the advantages of simple, fast and high precision. |
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| Keywords: | Thermal conductivity method Natural rubber latex Nitrogen content Significance test |
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