XÁC ĐỊNH ĐỒNG THỜI 16 HỢP CHẤT FLUOROBENZOIC ACIDS (FBA) TRONG NƯỚC KHAI THÁC BẰNG KỸ THUẬT CHIẾT PHA RẮN VÀ SẮC KÝ KHÍ-KHỐI PHỔ

Tóm tắt

A method for the simultaneous analysis of 16 fluorobenzoic acids (FBA) via GC–MS based on solidphase extraction (SPE) and derivatization with pentafluorobenzyl bromide is described. The method
may be applicable to tap water, sea water and produced water samples with high salinity (300g/L). It
uses low amounts of chemicals and is adaptable from 100 to 500mL of sample volumes. Solid-phase
extraction on polymeric Strata X cartridges allowed the enrichment of the acids with extraction
recovery between 70% and 110%. The method detection limit was 0.2-1.0 µg/L and the relative
standard deviations were less than 15% in the concentration range 1.6–10 µg/L.