On-Line Purge and Trap GC-MS for Monitoring 1,3-Dichloropropene in Agricultural Water and Soil Samples

Abstract

A simple and reliable method using on-line purge and trap gas chromatography mass spectrometry has been developed for the determination of the fumigant 1,3-dichloropropene (1,3-DCP) in agricultural water and soil samples. The proposed analytical methodology was validated in the target environmental matrices by the analysis of spiked blank matrix samples. Limit of detection values of 0.05 microg/L for water and 0.005 microg/Kg for soils were obtained, while limits of quantitation were of 0.1 microg/L for water and 0.01 mg/kg for soils. Good recoveries (93-104%) and precision values (< 6%) were obtained for the target compound in the studied matrices. This methodology has been successfully applied to the analysis of incurred groundwater samples from an agricultural area, The Campo de Dalías (Almería, South Spain), although 1,3-DCP was not detected. The method was also applied to soil samples from greenhouse treated with a soil fumigant containing 1,3-DCP.