Application of Laser Ionization Time-of-Flight Mass Spectrometry for the Direct Measurement of a Silane Coupling Agent in Slurries

Abstract

Laser ionization time-of-flight mass spectrometry (LI-TOFMS) was applied to the direct measurement of a silane coupling agent in slurries. In the present study, a slurry with dispersed TiO2 nanoparticles treated with phenyltriethoxysilane (PTES) was prepared. As a result, the peaks for PTES could be observed from the slurry sample containing unreacted PTES, and no peaks were observed from the slurry sample where unreacted PTES was removed by washing. This method can be used to directly analyze surface coating agents, such as PTES in slurries, and would be useful for obtaining a direct understanding of the characteristics of slurries.

A Quantitative Analysis of an Oil Component in an Emulsion by Multiphoton Ionization Mass Spectrometry

“…Recently, we reported on the results of the online monitoring of emulsions with no pretreatment using multiphoton ionization time-of-flight mass spectrometry (MPI-TOFMS). [15][16][17][18] MPI-TOFMS has several advantages, such as spectroscopic selectivity and robustness, [19][20][21][22][23][24][25] and several applications have been reported such as online monitoring of the environment.…”

Online Monitoring of a Styrene Monomer and a Dimer in an Emulsion via Laser Ionization Time-of-Flight Mass Spectrometry

“…[1][2][3] This method has advantages that include selectivity, rapidity, and robustness. 4,5 Therefore, LI-TOFMS is used extensively in the measurement of complex environmental samples, [6][7][8][9][10][11] biological molecules, 12 bioactive substances, 13 and polymers. 14,15 Emulsions are heterogeneous systems where one liquid is dispersed into another as droplets.…”