Journal
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Volume 102, Issue 4, Pages 581-588Publisher
SPRINGER
DOI: 10.1007/s00128-019-02567-4
Keywords
Trihalomethnes; Zein@Fe3O4 nanocomposite; Dispersive solid phase extraction; Biopolymer; Gas chromatography; Environmental analysis
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This study presents a simple dispersive solid phase extraction (DSPE) technique combined with headspace thermal desorption (HSTD) for extraction and determination of the most significant trihalomethanes (THMs), bromodichloromethane, bromoform, chloroform and dibromochloromethane, in water samples by using Zein@Fe3O4 nanocomposite coupled with gas chromatography/micro electron capture detection (GC-MECD). Various parameters affecting the DSPE-HSTD performance were investigated and optimized. The obtained results revealed that under optimum conditions, LOD and LOQ values were in the range of 0.1-0.36, 0.3-1.08 A mu g L-1, respectively. The intra-day and inter-day precisions of the method at a concentration of 10 A mu g L-1 for each analyte (n = 5) were obtained in the range of 5.69-6.70% and 6.12-7.34%, respectively. Finally, the proposed method was successfully applied for extraction and determination of four THMs in drinking water samples.
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