Headspace solid phase microextraction method for determination of triazine and organophosphorus pesticides in soil

Abstract

A headspace solid phase microextraction method (HS-SPME) for simultaneous determination of five pesticides belonging to triazine and organophosphorus pesticide groups in soil samples was developed. Microextraction conditions, such as temperature, extraction time and sodium chloride (NaCl) content were investigated and optimized using 100 μ m polydimethyl-siloxane (PDMS) fiber. Detection and quantification were done by gas chromatography-mass spectrometry (GC-MS). Relative standard deviation (RSD) and recovery values for multiple analysis of soil samples fortified at 30 μ g kg^{− 1} of each pesticide were below 13 % and higher than 70 %, respectively. Limits of detection (LOD) for all the compounds studied were less than 3.2 μ g kg^{− 1}. The proposed method was applied in the analysis of some agricultural soil samples.

Keywords:

• Headspace solid phase microextraction
• pesticides
• soil
• multiresidue method

Acknowledgment

This study was carried out as part of the project No TR20041 supported by the Ministry of Science and Environmental Protection of the Republic of Serbia.

Notes

* Information taken from Marković et al. ^{[ 1 ]}

^# bd: below detection limit.