Evaluation of Solvents Used as Keepers in the Determination of Organic Pollutants by GC/MS.

ABSTRACT: Solvent evaporation is often used in the sample preparation procedure for the determination of organic pollutants such as polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs) and organic pesticides. Because of the loss of analyte during this step, a high-boiling solvent, i.e., a keeper, is often added to the extract before evaporation. However, there are almost no basic studies found in the literature on the selection of keepers for the appropriate type of analytes (keepers are usually selected only on the basis of information provided by various recommendations). In this work, the effect of several keepers (isooctane, toluene, nonane, octanol, dodecane) on the recovery of various analytes (PAHs, PCBs, organic pesticides) was evaluated (during evaporation in a stream o

SUBMITTER: Dabrowski L 

PROVIDER: S-EPMC7582485 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature