Parameters (CV in %) Cadmium Lead Repeatability (CV in %) 4.60 1.70 Reproducibility (µg/L) 4.80 4.40 Detection limit (µg/L) 2.10 3.02 Quantification limit 10.1 12.1 Recovery percentage (%) 97.0 ± 3.2 96.0 ± 4.1

Table 1: Results of validation tests.