Abstract
An initial assessment of naproxen, ibuprofen and diclofenac in Ladysmith water resources in South Africa using molecularly imprinted solid-phase extraction followed by high performance liquid chromatography-photodiode array detection
Highlights
Analyte extraction and pre-concentration are very crucial steps in the analysis of environmental pollutants
Several sample preparation techniques including solid-phase extraction (SPE), solid-phase microextraction, hollow fibre-based liquid phase microextraction and stir bar sorptive extraction have been reported for the quantitative analysis of pharmaceuticals in the environment.[2,3,4,5]
This phenomenon implied that the acidic molecules in their ionized forms would have been less retained by the molecularly imprinted polymer (MIP)
Summary
Analyte extraction and pre-concentration are very crucial steps in the analysis of environmental pollutants. Several sample preparation techniques including solid-phase extraction (SPE), solid-phase microextraction, hollow fibre-based liquid phase microextraction and stir bar sorptive extraction have been reported for the quantitative analysis of pharmaceuticals in the environment.[2,3,4,5] In all these aforementioned procedures, SPE is the most used system where various traditional sorbents that include hydrophilic lipophilic balance (Oasis HLB), Oasis MCX, Strata X and C18 are employed.[6,7,8,9] Most recently, the application of molecularly imprinted polymers (MIPs) as selective sorbents in solid-phase extraction of pharmaceuticals from aqueous samples have been reported.[10,11,12] MIPs are gaining popularity due to their high selectivity, thermal stability, re-usability, and stability in aqueous and organic solvents.[13,14]
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