Analytical method performance.

Summary of the analytical performance in surface water matrix, including method limits of detection (LOD, ng L-1) and limits of quantification (LOQ, ng L-1), linearity range (ng L-1) and associated determination coefficients (R2), and accuracy (%) and precision (RSD%) at the two tested spike levels (QC1: 75 ng L-1; QC2: 750 ng L-1).