Figure 4.
Chromatograms of UHQ-water spiked at the LOQ level in water (a), compared to a urine sample analyzed (S1), non-spiked (b) and spiked (c). 1= 1-NAP, 2 = 2-NAP, 3 = 1-ACE, 4 = 9-FLU, 5 = 2-FLU, 6 = 9-PHE.
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