Author(s)

E. Benfenati, S. Garofani, G. Facchini, A. Cantu & M. Terreni

Abstract

Analysis of surface waters with different extractive procedures E. Benfenati, S. Garofani, G. Facchini, A. Cantu, M. Terreni Istituto di Ricerche Farmacologiche 'Mario Negri', via Eritrea 62, Milan, Italy ABSTRACT Solid phase extraction (SPE) techniques are now widely employed for analysis of pesticides and organic pollutants in water samples. We investigated the recovery of compounds belonging to different chemical classes through three extractive phases: Carbopack B, C-18 and XAD-2 columns, and C-18 membranes. A gas chromatography- mass spectrometry (GC-MS) method was used in the selected ion recording (SIR) mode. In order to set up a general-purpose extractive apparatus, we developed an all-glass system, to avoid the possibility of contaminants leaking from plastics. Contaminants can be released from the solid phase used for the extraction, and this point was investigated through GC-MS. INTRODUCTION The principal requirement of an extractive method is sufficient and repr

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