PEG-20M毛细管柱 工作场所空气中环氧丙烷热解吸气相色谱法测定

名称：毛细管柱

固定液：聚乙二醇-20M

规格：30m*0.25mm*0.25um

型号：PEG-20M
应用： 工作场所空气中环氧丙烷热解吸气相色谱法测定

浩瀚色谱（山东）应用技术开发有限公司建立工作场所空气中环氧丙烷热解吸气相色谱法测定的不确定度评定方法,通过控制这些因素提高检测结果的置信度和准确性.方法 依据中华人民共和国国家计量技术规范JJF 1059-1999<测量不确定度评定与表示>进行评定.结果 环氧丙烷不确定度主要来源:①标准状态下采样体积Vo不确定度;②标准气体配制过程引入的不确定度;③工作曲线绘制方法引入的不确定度;④样品测定重复性引入的不确定度.取置信概率为95%,包含因子k=2,则其扩展不确定度:U=2×5.79%=11.58%.结论 该不确定度评定方法对环氧丙烷的热解吸气相色谱法检测过程的质量控制意义十分重大,可以提高检测结果的准确性和置信度.



Determination of Propylene Oxide in Workplace Air by Thermal Desorption Gas Chromatography
Determination of Propylene Oxide in Workplace Air by Thermal Desorption Gas Chromatography Details:

Name: capillary column

Fixative: polyethylene glycol-20M

Specifications: 30m*0.25mm*0.25um

Model: PEG-20M
Application: Gas Chromatographic Determination of Thermal Desorption of Propylene Oxide in Workplace Air

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. established an uncertainty assessment method for the determination of propylene oxide thermal desorption gas chromatography in workplace air, and improved the confidence and accuracy of the detection results by controlling these factors. The method is based on China The National Metrology Technical Specification of the People's Republic of China JJF 1059-1999 <Measurement Uncertainty evaluation and Representation> for evaluation. Results The main sources of propylene oxide uncertainty are: ① the sampling volume Vo uncertainty in the standard state; ② the standard gas preparation process introduced Uncertainty; ③ Uncertainty introduced by the working curve drawing method; ④ Uncertainty introduced by the repeatability of sample measurement. Take the confidence probability as 95%, including factor k=2, then its expanded uncertainty: U=2× 5.79%=11.58%. Conclusion The uncertainty evaluation method is of great significance to the quality control of the detection process of the pyrolysis gas chromatography of propylene oxide, which can improve the accuracy and confidence of the detection results.