Rapid quantification of N-methyl-2-pyrrolidone in polymer matrices by thermal desorption-GC/MS

Young Min Kim, Jae Woo Kim, Hye Mi Moon, Min Jin Lee, Akihiko Hosaka, Atsushi Watanabe, Norio Teramae, Young Kwon Park, Seung Woon Myung

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Analysis of a residual solvent in polymeric materials has become an important issue due to the increased regulations and standards for its use. N-Methyl-2-pyrrolidone (NMP) is a solvent widely used in many industries and restricted as one of the chemicals under EU REACH regulations due to its potential harmful effects. In this study, thermal desorption-gas chromatography/mass spectrometry (TD-GC/MS) is applied for the quantitative analysis of NMP with the use of a polymer-coated sample cup. By using the polymer-coated sample cup, the vaporization of NMP was prevented during waiting time before TD-GC/MS analysis. The calibration curve for the TD method showed good linearity (correlation coefficient, r 2 = 0.9998) and precision values (below 5.3% RSD). NMP recovery rates in different polymer matrices (PS, PMMA and PVC) were in the range of 98.8 to 106.6% with RSD values below 5.0%. The quantification result (600 mg NMP/kg PVC) for the blind NMP carrying sample in a PVC matrix by TD-GC/MS was higher than that (532 mg NMP/kg PVC) by solvent extraction-GC/MS method.

Original languageEnglish
Pages (from-to)821-824
Number of pages4
JournalAnalytical Sciences
Issue number7
StatePublished - 2017


  • N-Methyl-2-pyrrolidone
  • Polymer matrices
  • Polymer-coated sample cup
  • Pyrolyzer
  • TD-GC/MS


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