Determination of Monomer Conversion in Methacrylate-based Polymer Monoliths Fixed in a Capillary Column by Pyrolysis-Gas Chromatography

Low-flow-resistance Methacrylate-based Polymer Monolithic Column Prepared by Low-conversion Ultraviolet Photopolymerization at Low Temperature

“…This value is over an order of magnitude larger than that of a 3-μm particle packed column and twice as large as that of the monolithic column prepared by UV irradiation in our previous study (2.0 mW cm -2 , 8 min at 0 C; %C: 32% for BMA, 58% for EDMA). 21,31 The monolithic column polymerized for 2 min at -15 C showed superior performance in terms of both separation efficiency and permeability. The characteristics of this column were further investigated.…”

“…31 A vertical microfurnace-type pyrolyzer (PY2020iD, Frontier-Lab, Koriyama, Japan) was directly attached to the injection port of a gas chromatograph (G-6000, Hitachi) equipped with a flame ionization detector. The outer coating of the capillary monolithic column was removed and the bare column was cut to 5 mm long.…”

“…31 The total weight of the poly(BMA-co-EDMA) monolith contained in a 5-mm length of column was determined as follows: first, a 5-mm section of monolithic column without the outer coating was weighed by micro-balance (UMT2, Mettler Toledo, Greifensee, Switzerland), incinerated using a gas burner to combust the monolith, and weighed again. The weight differential before/after incineration was defined as the total weight of the monolith, w, fixed in the capillary.…”

Pyrolysis-Gas Chromatography/Multiphoton Ionization/ Time-of-Flight Mass Spectrometry for the Rapid and Selective Analysis of Polycyclic Aromatic Hydrocarbons in Aerosol Particulate Matter

“…One possible system is a GC-MS that uses a pyrolyzer for the sample introduction. [28][29][30][31][32] A portable Curie-point pyrolyzer has recently become commercially available, where a sample can be safely and rapidly introduced into a GC. 33 Though the influence of an impurity is a possibility for environmental samples that have had no pretreatment, the use of a laser for MPI would successfully enhance selectivity.…”

Separation of Inorganic Anions Using Methacrylate-Based Monolithic Column Modified with Trimethylamine in Ion Chromatography Capillary System

“…The polymerization reaction mixtures consist of a combination of an initiator, monomers, cross-linkers and porogens [27]. The organic polymer-based monolithic columns have some advantages compared with silica-based monolithic columns, including simple preparation process, high stability over a wide pH range and easily modified for different purposes [28,29]. However, the organic polymer-based monolithic column applications for separation of ionic species had still remained a challenge in ion chromatography.…”