On-Line Coupling of Gas Chromatography-Gas Chromatography for the Determination of Coumarin in Kerosene

Abstract

Determination of coumarin in kerosene was studied. Kerosene is discriminated from taxed fuel oil by the addition of coumarin in Japan. A fluorescence detection method has been widely used to check the legal distribution of kerosene, however, the method is inevitably resulting waste fluid consisted both of the aqueous alkaline solution and the organic solvent. By introducing a heart-cutting analysis with a set of on-line coupled packed-capillary and open-tubular columns, coumarin in kerosene was successfully determined in gas chromatography. The developed technique showed several advantageous features such as a significantly reduced waste, quick and easy separation/determination, along with a reduced sample volume required in the determination process.

Quantitative Determination of Gaseous Alkanes Adsorbed on Filter Paper During PM2.5 Sampling

“…Gas chromatography (GC) is most widely used method for analyzing volatile organic compounds (VOCs) [5,6] and semi-volatile organic compounds (SVOCs) [7][8][9] due to its high sensitivity and selectivity. To determine organic compounds in PM2.5, PM2.5 is collected on a quartz fiber filter or a Teflon (PTFE) filter by sampling atmospheric air using an air sampler.…”

Titanium Dioxide as a Packing Material for Micro-Packed Column in Gas Chromatography

“…Both ends of the column were connected to stainless steel capillaries of 0.3 mm i.d. and 0.52 mm o.d., enabling connection of the micro-packed column to a conventional capillary GC system without specific attachments [4][5][6]. The micro-packed column was more compatible with rapid temperature program elution [2], and required fewer stationary phase particles, than the conventional packed column.…”