表面活性劑中游離環(huán)氧丙烷含量的測定. 氣相色譜法，液化石油氣，二甲醚，甲縮醛，乙縮醛，乙醇，室內空氣，焦爐煤氣，煉廠氣，變壓器油，多氯聯苯，植物油，增塑劑，塑化劑，乙酸乙酯，醫(yī)療器械

表面活性劑中游離環(huán)氧丙烷含量的測定. 氣相色譜法
表面活性劑中游離環(huán)氧丙烷含量的測定. 氣相色譜法 詳細信息：

名稱：毛細管柱
固定相：6 %腈丙基苯基 94 %二甲基聚硅氧烷，
規(guī)格：30m*0.53mm*0.3um
型號：HH-624

表面活性劑是這樣一種物質，它在加入很少量時即能大大降低溶劑的表（界）面張力（一般以水為標準溶劑），改變體系的界面組成與結構，成為人們改變界面性質以適應各種要求的重要手段。

BS ISO 19619:2018規(guī)定了測定由環(huán)氧丙烷共聚物合成的表面活性劑中游離環(huán)氧丙烷的分析程序。該方法適用于通過頂空氣相色譜（HS-GC）和基于外部程序的火焰離子化檢測器（FID）定性和定量測定環(huán)氧丙烷加合物、聚醚和聚乙二醇酯中的環(huán)氧丙烷基團。氣相色譜-質譜（GC-MS）用于確認目的。

表面活性劑中游離環(huán)氧丙烷含量的測定. 氣相色譜法 測試譜圖：




Specifications: 30m*0.53mm*0.3um

Surface active agents - Determination of free propylene oxide content Gas chromatography

Surface active agents - Determination of free propylene oxide content Details of gas chromatography:



Name: capillary column

Stationary phase: 6% cyanopropyl phenyl 94% dimethyl polysiloxane,

Specification: 30m * 0.53mm * 0.3um

Model: HH-624



Surfactant is a kind of substance that can greatly reduce the surface (interfacial) tension of solvent (generally water is the standard solvent) when a small amount of it is added, change the interface composition and structure of the system, and become an important means for people to change the interface properties to meet various requirements.



BS ISO 19619:2018 specifies the analytical procedure for the determination of free propylene oxide in surfactants synthesized from propylene oxide copolymers. This method is applicable to the qualitative and quantitative determination of propylene oxide groups in propylene oxide adducts, polyethers and polyethylene glycol esters by headspace gas chromatography (HS-GC) and flame ionization detector (FID) based on external procedures. Gas chromatography-mass spectrometry (GC-MS) is used for confirmation purposes.



Surface active agents - Determination of free propylene oxide content Gas chromatography test spectrum: