Muggundha Raoov
University of Science, Malaysia
Posters & Accepted Abstracts: Int J Drug Dev & Res
In this present study, magnetic nanoparticles (MNPs) nanocomposites modified with polyaniline (PANI) coated newly synthesised dicationic ionic liquid (DICAT) forming MNPPANI-DICAT were successfully synthesised as new generation materials for magnetic solid phase extraction (MSPE). MNPPANI-DICAT was characterised by FT-IR NMR, CHN, BET, SEM, TEM, and VSM techniques and the results were compared with MNP-PANI and native MNP. This new material was applied as a magnetic adsorbent for the pre-concentration of polycyclic aromatic hydrocarbons (PAHs). Under the optimal conditions, the proposed method was evaluated and applied for the analysis of PAHs in environmental samples using gas chromatography-mass spectrometry (GC-MS). The validation method showed good linearity (0.005â�?�?500 �?µg L-1) with the coefficient of determination (R2)>0.999. The limits of detection (LOD) and quantification (LOQ) of the developed method (MNP-PANI-DICAT-MSPE) were in the range of 0.0008â�?�?0.2086 �?µg Lâ�?�?1 and 0.0024â�?�?0.6320 �?µg L-1, respectively. The enrichment factor (EF) of PAHs on MNP-PANIDICAT-MSPE were in the range of 7.546â�?�?29.632. The extraction recoveries of natural water, sludge, and soil samples were ranged from 80.2% to 111.9% with relative standard deviation (RSD) less than 5.6%. The newly synthesised MNP-PANI-DICAT possess good sensitivity, reusability, and fast extraction of PAHs under the MSPE procedure in various environmental samples. muggundha@usm.my
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