Thermospray Ionization Mass Spectrometry of Polydimethylsiloxane Antifoams.

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概要

• 論文の詳細を見る

• Mass Spectrometric characterization of several polydimethylsiloxane (PDSI) antifoams has been studied using a thermospray (TSP) ionization technique. The PDSI antifoams dissolved into an eluent were flow-injected to a TSP interface without column separation. A selective formation of PDSI ammonium adduct ions directly reflecting their molecular weight distributions was observed in the mass region up to 3500 daltons. Both cyclic PDSIs and fatty acid esters were detected for a water-dilutable antifoam and their relative abundances and species were characteristic to a particular formulation of antifoam emulsion. Thus TSP mass spectrometric technique seems suitable and useful for analysis of an aqueous antifoam sample to identify both its molecular weight distribution of PDSIs and a type of antifoam formulations used in various fields such as food and pharmaceutical industries.

• 公益社団法人 日本化学会の論文

著者

• Sonoda Akio

  Control Research and Development, Upjohn Pharmaceuticals Ltd.

関連論文

• Thermospray Ionization Mass Spectrometry of Polydimethylsiloxane Antifoams.

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