化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2014年
1期
12-15
,共4页
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
間二氯苯%高效液相色譜法%氣相色譜法%純度%鄰二氯苯%對二氯苯%苯%雜質測量
간이록분%고효액상색보법%기상색보법%순도%린이록분%대이록분%분%잡질측량
m-dichlorobenzene%HPLC%GC%purity%o-dichlorobenzene%p-dichlorobenzene%benzene%impurity determination
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。
通過測定間二氯苯中的雜質含量得到間二氯苯的純度。分彆採用高效液相色譜法（HPLC-UVD）和氣相色譜法（GC-FID）測定間二氯苯中主要雜質鄰、對二氯苯的含量，結果錶明兩種方法所得雜質含量一緻；用高效液相色譜法（HPLC）測定間二氯苯中雜質苯的含量，卡爾費休（Karl Fischer）法測定水分含量，熱重法（TGA）進行灰分測定，電感耦閤等離子體質譜（ICP-MS）法測定無機雜質含量。最終確定間二氯苯的純度為99.60%，擴展不確定度為0.03%（k=2）。該方法測定結果準確可靠，具有可溯源性。
통과측정간이록분중적잡질함량득도간이록분적순도。분별채용고효액상색보법（HPLC-UVD）화기상색보법（GC-FID）측정간이록분중주요잡질린、대이록분적함량，결과표명량충방법소득잡질함량일치；용고효액상색보법（HPLC）측정간이록분중잡질분적함량，잡이비휴（Karl Fischer）법측정수분함량，열중법（TGA）진행회분측정，전감우합등리자체질보（ICP-MS）법측정무궤잡질함량。최종학정간이록분적순도위99.60%，확전불학정도위0.03%（k=2）。해방법측정결과준학가고，구유가소원성。
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.
