Comparative study of different fabric sorptive extraction sorbents to determine emerging contaminants from environmental water using liquid-chromatography-tandem mass spectrometry

Identificador:  imarina:5129036

Handle: https://hdl.handle.net/20.500.11797/imarina5129036

Autors:  Lakade, SS; Borrull, F; Furton, KG; Kabir, A; Fontanals, N; Marcé, RM

Resum:
A new sorptive extraction technique, fabric phase sorptive extraction (FPSE), using different coating chemistries: non-polar solgel poly(dimethyldiphenylsiloxane) (PDMDPS), medium polar solgel poly(tetrahydrofuran) (PTHF), and polar solgel poly(ethylene glycol)block-poly(propylene glycol)block-poly(ethylene glycol) (PEGPPGPEG triblock) and solgel Carbowax 20M were evaluated to extract a group of pharmaceuticals and personal care products (PPCPs) with wide range of polarity from environmental aqueous samples. Different parameters affecting FPSE such as sample pH, stirring speed, addition of salt, extraction time, sample volume, elution solvent and desorption time were optimized for each sorbent coated FPSE media. Under optimum conditions, FPSE media coated with solgel Carbowax 20M provided the highest absolute recoveries (7785%) for majority of the analytes with the exception of the most polar ones. Nevertheless, all four sorbents offered better recovery compared to the commercially available coating for stir-bar sorptive extraction based on Ethylene Glycol/Silicone (EG/Silicone). The method based on FPSE with solgel Carbowax 20M media and liquid chromatography(electrospray ionization) tandem mass spectrometry (LC(ESI) MS/MS) was developed and validated for environmental water samples. Good apparent recoveries (4180%), detection limits (150 ng L−1), repeatability (%RSD<15%, n=5) and reproducibility (%RSD<18%, n=5) were achieved.