SPME GC/MS determination of organochlorine pesticides in water samples

• Main Authors: Yerbolat Sailaukhanuly, Bulat Kenessov, Lars Carlsen, Duisek Kamysbayev
• Format: Article
• Language: English
• Published: al-Farabi Kazakh National University 2013-05-01
• Series: Chemical Bulletin of Kazakh National University
• Online Access: https://bulletin.chemistry.kz/index.php/kaznu/article/view/2

Headspace solid phase microextraction (HS-SPME) in combination with gas chromatography and mass-spectrometry (GC/MS) was studied for analysis of water samples. The organochlorine pesticides (OCPs), p,p'-DDT, p,p'-DDD, and p,p'-DDE were collected and analyzed by GC/MS. To select of effective fiber coatings four types of SPME fibers were examined and compared. The parameters effecting the efficiency of HS-SPME such as extraction and pre-incubation time and extraction temperature, effect of solvent nature, ionic strength were studied to obtain optimal parameters. The method was developed using spiked water samples in a concentration range  10 - 500 ng/L. The calibration curve was linear over the studied concentration range with r≥0.9925. The detection limits varied from 1.57 to 2.08 ng/L. An authentic water samples from contaminated lake with OCPs were analyzed by developed method.