Identification and Quantification of Poly(oxyethylene) Alkyl Ether Nonionic Surfactants in River Water at Trace Levels by Field Desorption Mass Spectrometry

摘要: Field desorption mass spectrometry (FDMS) was applied to the identification and quantification of poly(oxyethylene) alkyl ethers in natural waters at trace levels. The FD spectrum (POE) derivatives, which produce (M+H)+, (M+cation)+, cluster ions type (M1+M2+H)+, mainly affected by emitter current, amount sample loading, presence metal salts. POE were extracted from water means XAD-4 resin adsorption or solvent extraction under nitrogen bubbling, determined FDMS using tetradeuterioocta(oxyethylene) dodecyl ether as an internal standard. Sample sizes 10−6 10−8 g are suitable for ethers. mole ratio methyl-substituted undecyl estimated comparison with spectra HPLC fractions extract.