An evaluation of the use of laminar C-18 disks employed as part of the solid phase extraction process. Simultaneous capillary gas chromatography massspectrometry determination of triazines, organochlorine pesticides, and polyaromatic hydrocarbons

The combination of solid phase extraction and gas chromatography - mass spe ctrometry enables fast and reliable analysis of pesticides residues in drin king water. The evaluation of analysis techniques is a priority for laborat ories dealing with quality control. The ordinance 89-3 of the 1/3/89 fixes the maximum acceptable concentrations of micro-pollutants in drinking water including pesticides and chemically related substances belonging to highly diversified chemical families. This paper described a multiresidue analysi s method of triazines, organochlorine pesticides and polyaromatic hydrocarb ons, adapted from the method E.P.A. 525.2. This multiresidue method and esp ecially the solid phase extraction process employing laminar C-18 disks, is evaluated together with relevant statistical tests as outlined in the NF X P T 90-210 procedure.