Elements

Certified values (µg∙cm2)

Found values (µg∙cm2)

Limit of detection (ng∙m3)

Al

2.33 ± 0.05

2.8 ± 0.4

0.04

Si

Not certified (reference value, 5.9 ± 0.2)

6.4 ± 0.2

0.03

S

Not certified (reference value, 0.11 ± 0.03)

0.14 ± 0.04

0.01

Cl

ND

0.26 ± 0.03

0.006

K

0.53 ± 0.05

0.53 ± 0.01

0.003

Ca

1.3 ± 0.2

1.35 ± 0.03

0.003

Ti

0.15 ± 0.02

0.15 ± 0.02

0.002

Fe

2.7 ± 0.2

2.73 ± 0.04

0.02

Zn

0.18 ± 0.01

0.18 ± 0.01

0.06

V

0.005 ± 0.001

0.002 ± 0.002

0.04

Cr

0.014 ± 0.003

0.015 ± 0.003

0.01

Mn

0.032 ± 0.001

0.035 ± 0.003

0.02

Ni

0.007 ± 0.001

0.005 ± 0.002

0.04

Cu

0.040 ± 0.004

0.044 ± 0.003

0.01

As

0.0012 ± 0.0001

ND

Pb

0.03 ± 0.01

0.02 ± 0.01

0.02