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Table 3 Recovery percentages and concentrations of As, Cd, Pb, Ni, Zn, and Fe in SRM (1515)

From: Comparative study of three digestion methods for elemental analysis in traditional medicine products using atomic absorption spectrometry

Analyte SRM conc. μg/g (±SD) Measured conc. μg/g (±SD) Recovery (%)
As 0.038 (±0.007) 0.039 (±0.002) 102
Cd 0.013 (±0.002) 0.012 (±0.009) 96
Pb 0.47 (±0.02) 0.5 (±0.02) 106
Ni 0.91 (±0.12) 0.86 (±0.004) 94.5
Zn 12.5 (±0.3) 13.5 (±0.3) 108
Fe 83 (±5) 83.3 (±4) 100