From: Vortex-assisted supramolecular solvent dispersive liquid–liquid microextraction of ketoprofen and naproxen from environmental water before chromatographic analysis: response surface methodology optimisation
NSAID
Added (µg L−1)
% RR
% RSD
KET
50
98.2
7
250
93.6
3
550
101.4
NAP
97.0
6
97.9
4
100.9
1