Trace element concentrations in certified reference material (NIST-SRM 1577c) and recovery of analyzed metals (n = 3).
|Element||Certified value||Measured value||Recovery (%)|
|Fe||197.94 mg/kg||195.76 ± 9.33||98.9|
|Cu||275.2 mg/kg||271.34 ± 6.14||98.6|
|Co||0.3 mg/kg||0.29 ± 0.01||97.1|
|Ni||44.5 µg/kg||43.07 ± 1.05||96.8|
|Pb||62.8 µg/kg||61.73 ± 1.31||98.3|
|As||19.6 µg/kg||18.90 ± 1.11||96.5|
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