Unit

Certified value

Analysed value

Recovery value (%)

Li

ug・g−1

18

19.406

108

Al

%

2.297 ± 0.018

2.307

100

Cr

ug・g−1

40.9 ± 1.9

41.584

102

Mn

ug・g−1

234.5 ± 2.8

194.059

83

Cu

ug・g−1

10.01 ± 0.34

9.703

97

Zn

ug・g−1

48.9 ± 1.6

48.515

99

Cd

ug・g−1

0.148 ± 0.007

0.139

94

Pb

ug・g−1

11.7 ± 1.2

11.980

102