| 9409003 |
Song D, Zhang S: Rapid determination of 1,4-dioxane in water by solid-phase extraction and gas chromatography-mass spectrometry. J Chromatogr A. 1997 Nov 7;787(1-2):283-7.
A highly sensitive and accurate gas chromatography-mass spectrometry method for rapidly quantitative analysis of dioxane in water samples is described. Dioxane in water sample was extracted by hexane-methylene chloride (80:20, v/v) then transferred to a C18 solid-phase extraction (SPE) cartridge and eluted by acetonitrile. An aliquot of this solution was analyzed by gas chromatography-mass spectrometry with electron impact ionization and selected ion monitoring (dioxane m/z 88) mode. The quantitative limit was set to be 0.05 microgram/ml with an injection volume of 2 microliters and a sample volume of 1 ml. The isotopically labelled [2H8] dioxane (m/z 96) was used as internal standard. Analysis time is approximately 6 min. The results for various kinds of SPE cartridges in this method are also discussed. |
81(1,1,1,1) |