Surface characteristics of glass fibres covered with an aluminum layer after a chemical modification process using secondary ion mass spectrometry (SIMS) and atomic force microscopy (AFM)

摘要

Results show investigations of surface of modified glass fibres (before and after chemical modification of their surface), which are candidates for future original matrix-less reference material for volatile ethene analytes (C2H4). Used analytical methods are secondary ion mass spectrometry and atomic force microscopy. The investigations were aimed at observation of changes and processes which occurred on the surface of glass fibres covered with an aluminum layer and constituting an ethane carrier. The paper describes the procedure of chemical modification of the surface of 3 cm segments of glass fibres covered with an aluminum layer (660/680 mu m, external diameter of quartz/external Al diameter), a surfactant constituting a source of ethene. Ethene (a measured constituent) in a standard gas mixture is obtained during the process of controlled thermal decomposition of a surface compound in a stream of rarefied gas (such kind of mixture is called matrix-less reference material).