名稱：毛細(xì)管柱

固定液：聚乙二醇-20M

規(guī)格：30m*0.25mm*0.25um

型號(hào)：PEG-20M
應(yīng)用： 工作場(chǎng)所空氣中環(huán)氧丙烷熱解吸氣相色譜法測(cè)定

浩瀚色譜（山東）應(yīng)用技術(shù)開(kāi)發(fā)有限公司建立工作場(chǎng)所空氣中環(huán)氧丙烷熱解吸氣相色譜法測(cè)定的不確定度評(píng)定方法,通過(guò)控制這些因素提高檢測(cè)結(jié)果的置信度和準(zhǔn)確性.方法 依據(jù)中華人民共和國(guó)國(guó)家計(jì)量技術(shù)規(guī)范JJF 1059-1999<測(cè)量不確定度評(píng)定與表示>進(jìn)行評(píng)定.結(jié)果 環(huán)氧丙烷不確定度主要來(lái)源:①標(biāo)準(zhǔn)狀態(tài)下采樣體積Vo不確定度;②標(biāo)準(zhǔn)氣體配制過(guò)程引入的不確定度;③工作曲線繪制方法引入的不確定度;④樣品測(cè)定重復(fù)性引入的不確定度.取置信概率為95%,包含因子k=2,則其擴(kuò)展不確定度:U=2×5.79%=11.58%.結(jié)論 該不確定度評(píng)定方法對(duì)環(huán)氧丙烷的熱解吸氣相色譜法檢測(cè)過(guò)程的質(zhì)量控制意義十分重大,可以提高檢測(cè)結(jié)果的準(zhǔn)確性和置信度.



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.