Rapid Identification and Quantification of Linear Olefin Isomers by Online Ozonolysis-Single Photon Ionization Time-of-Flight Mass Spectrometry
Rapid Identification and Quantification of Linear Olefin Isomers by Online Ozonolysis-Single Photon Ionization Time-of-Flight Mass Spectrometry
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通过在线臭氧分解-单光子电离飞行时间质谱法快速鉴定和定量直链烯烃异构体
DOI：
10.1007/s13361-015-1238-3
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发表时间：
2015
影响因子：
3.2
通讯作者：
Li, Haiyang
中科院分区：
文献类型：
--
作者：
Hou, Keyong;Wang, Yongchao;Wang, Haiyan;Li, Haiyang
直链烯烃中双键的特定位置可以促进烯烃催化合成反应，从而提高目标烯烃产品的质量。我们开发了一种基于单光子电离飞行时间质谱 (SPI-TOFMS) 与在线臭氧分解相结合的简单有效的方法，以识别和定量线性烯烃双键位置异构体。在线臭氧分解在双键位置裂解烯烃，导致形成相应的特征醛。然后通过 SPI-TOFMS 检测醛，以获得每种直链烯烃的独特光谱“指纹”，从而成功识别异构体。为了准确定量烯烃混合物中的异构体成分，提出了一种基于特征离子强度及其等效电离系数来定量三种异构体烯烃混合物的算法。烯烃组分的相对浓度误差低于 2.5%，而总分析时间小于 2 分钟。这些结果表明，在线臭氧分解SPI-TOFMS具有实时监测催化烯烃合成反应的潜力。
The specific locations of the double bonds in linear olefins can facilitate olefin catalytic synthetic reactions to improve the quality of target olefin products. We developed a simple and efficient approach based on single photon ionization time-of-flight mass spectrometry (SPI-TOFMS) combined with online ozonolysis to identify and quantify the linear olefin double bond positional isomers. The online ozonolysis cleaved the olefins at the double bond positions that led to formation of corresponding characteristic aldehydes. The aldehydes were then detected by SPI-TOFMS to achieve unique spectrometric “fingerprints” for each linear olefin to successfully identify the isomeric ones. To accurately quantify the isomeric components in olefin mixtures, an algorithm was proposed to quantify three isomeric olefin mixtures based on characteristic ion intensities and their equivalent ionization coefficients. The relative concentration errors for the olefin components were lower than 2.5% while the total analysis time was less than 2 min. These results demonstrate that the online ozonolysis SPI-TOFMS has the potential for real-time monitoring of catalytic olefin synthetic reactions.
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影响因子：
1.8
作者：
Mingfeng Xie;Zhong-Pin Zhou;Zhandong Wang;Dongna Chen;F. Qi
通讯作者：
Mingfeng Xie;Zhong-Pin Zhou;Zhandong Wang;Dongna Chen;F. Qi
影响因子：
7.4
作者：
J. C. Gee;Daniel S. Prampin
通讯作者：
J. C. Gee;Daniel S. Prampin
影响因子：
4.2
作者：
Pham, Huong T.;Maccarone, Alan T.;Blanksby, Stephen J.
通讯作者：
Blanksby, Stephen J.
影响因子：
7.4
作者：
Thomas, Michael C.;Mitchell, Todd W.;Blanksby, Stephen J.
通讯作者：
Blanksby, Stephen J.
影响因子：
4.3
作者：
T. Streibel;S. Mitschke;T. Adam;R. Zimmermann
通讯作者：
T. Streibel;S. Mitschke;T. Adam;R. Zimmermann