| 间二氯苯纯度的测定 |
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| 引用本文： | 彭絮,江红,徐蓓.间二氯苯纯度的测定[J].化学分析计量,2014(1):12-15. |
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| 作者姓名： | 彭絮 江红 徐蓓 |
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| 作者单位： | [1]北京交通大学理学院,北京100044 [2]中国计量科学研究院化学所,北京100013 |
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| 基金项目： | 国家科技支撑项目（2011BAI02B05） |
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| 摘 要： | 通过测定间二氯苯中的杂质含量得到间二氯苯的纯度。分别采用高效液相色谱法(HPLC–UVD)和气相色谱法(GC–FID)测定间二氯苯中主要杂质邻、对二氯苯的含量,结果表明两种方法所得杂质含量一致;用高效液相色谱法(HPLC)测定间二氯苯中杂质苯的含量,卡尔费休(Karl Fischer)法测定水分含量,热重法(TGA)进行灰分测定,电感耦合等离子体质谱(ICP–MS)法测定无机杂质含量。最终确定间二氯苯的纯度为99.60%,扩展不确定度为0.03%(k=2)。该方法测定结果准确可靠,具有可溯源性。
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| 关 键 词： | 间二氯苯 高效液相色谱法 气相色谱法 纯度 邻二氯苯 对二氯苯 苯 杂质测量 |
Purity Determination of m-Dichlorobenzene |
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| Peng Xu,Jiang Hong,Xu Bei.Purity Determination of m-Dichlorobenzene[J].Chemical Analysis And Meterage,2014(1):12-15. |
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| Authors: | Peng Xu Jiang Hong Xu Bei |
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| Institution: | 1. College of Science, Beijing Jiaotong University, Beijing 100044, China ; 2. Division of Chemistry, National Institute ofMetrology, Beijing 100013, China) |
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| Abstract: | The purity of m-dichlorobenzene was obtained by determination of the impurity content in m-dichlorobenzene sample. High performance liquid chromatography （HPLC-UVD） and gas chromatography （GC-FID） method were employed to determine the main impurities,the results indicated that o-dichlorobenzene and p-dichlorobenzene content detected by two methods were consistent. HPLC （UVD） method was used to determine the content of benzene, the moisture content was obtained by Karl Fischer method, TGA method was used for ash analysis and ICP-MS method was used for determining the inorganic impurities. The purity of m-dichlorobenzene was 99.60%with expanded uncertainty of 0.03%（k=2）. The result determinied by the method is accurate and has traceability. |
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| Keywords: | m-dichlorobenzene HPLC GC purity o-dichlorobenzene p-dichlorobenzene benzene impurity determination |
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