Evaluation of the Sorbent Properties of Single- and Multiwalled Carbon Nanotubes for Volatile Organic Compounds through Thermal Desorption-Gas Chromatography/Mass Spectrometry Gwendeline K. S. Wong, Li Zhen Lim, Marcus Jun Wen Lim, Li Lin Ong, Bahareh Khezri, Martin Pumera, Richard D. Webster* Chempluschem 2015, 80(8), 1279-1287