Victoria K.H. Barclay, Niklas L. Tyrefors, I. Monika Johansson, Curt E. Pettersson
Abstract:The isotope-labeled compounds fluoxetine-d₅ and norfluoxetine-d₅ were used to study matrix effects caused by co-eluting compounds originating from raw and treated wastewater samples, collected in Uppsala, Sweden. The matrix effects were investigated by the determination of matrix factors (MF) and by a post-column infusion method. The matrix factors were determined to be 38-47% and 71-86% for the enantiomers of norfluoxetine-d₅ and fluoxetine-d₅, respectively. The influence of matrix effects when quantifying th…
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