ABSTRACT
Over recent decades, solid-phase extraction (SPE) has emerged as the most commonly used and successful sample extraction technique, since it can enrich different types of analytes and extract them from their liquid matrices efciently. One of the main advantages of SPE is its versatility, mainly due to the availability of different materials that cover the interactions with various analytes. Thus, one of the main aims of SPE research focuses on the development of novel materials that improve the properties of the already existing materials and, therefore, the results of SPE (Ramos 2012).
