Nanotechnologies - Characterization of volatile components in single-wall carbon nanotube samples using evolved gas analysis/gas chromatograph-mass spectrometry
|Standard Number||MS ISO/TS 11251:2012|
|Organization||Department of Standards Malaysia|
Single wall carbon nanotubes (SWCNTs) are one of the most prominent nano-objects in the burgeoning nanotechnology field. SWCNTs are a key component of nanotechnology and suggested to have transformative potential in many sectors. ISO/TS 11251:2010 describes the use of evolved gas analysis/gas chromatograph mass spectrometry (EGA/GCMS) to characterize volatile components in single-wall carbon nanotubes (SWCNTs). Evolved gas analysis is a technique that determines the nature and/or amount of volatile products in a sample at a controlled temperature using its evolved gas signature. To determine the volatile components, mass spectrometry is employed. In cases where many components are determined, gas chromatography is also applied to separate the gases for individual analysis. The contents of the standard include: Terms and definitions Principle Apparatus descriptions Sample preparation Measurement procedures for EGA/MS and EGA/GCMS Qualitative and mass loss analysis Precision, uncertainties and reporting Informative case study annex EGA/GCMS is able to qualitatively determine volatile components in SWCNTs and quantitatively examine the total volatile mass percentage. This method cannot determine the individual volatile components quantitatively as developing the calibration curves for multiple analytes is not possible. The case study annex gives examples of test procedures and results. Information on sources of error is included. Figure 4 shows an example of an output spectrum.