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Table 3 LOD, LOQ, precision and recovery for 4 heavy metals analyzed

From: Monitoring heavy metals, residual agricultural chemicals and sulfites in traditional herbal decoctions

Element Reference Value Found Recovery
(%)
Precision
(CV%)
LOD LOQ
Mean ± SD (mg/kg)
AS 0.285 ± 0.014a 0.298 ± 0.007 104.7 2.5 0.004 μg/kg 0.014 μg/kg
Cd 1.52 ± 0.04b 1.462 ± 0.005 96.2 0.3 0.003 μg/kg 0.009 μg/kg
Pb 0.87 ± 0.03c 0.703 ± 0.021 80.9 2.9 0.079 μg/kg 0.264 μg/kg
Hg 0.034 ± 0.004b 0.031 ± 0.003 100.0 4.7 0.017 mg/kg 0.057 mg/kg
  1. aRice flour Certified Reference Material (NIST 1568b), bTomato leaves Certified Reference Material (NIST 1573a), cPeach leaves Certified Reference Material (NIST 1547), LOD: limits of detection, LOQ: limits of quantification