Sample filter

Mass (mg)

Precise analysis (1)

Precise analysis (2)

BC (ng∙mg⁻¹)

STD

Mean (ng∙mg⁻¹)

S/M (%)^a

STD

Mean (ng∙mg⁻¹)

S/M (%)

ME4-46

20.27

3.88

550

0.70

5.09

270

1.88

280

ME4-47

20.11

1.87

479

0.39

2.70

229

1.18

250

ME4-48

20.23

1.45

611

0.24

3.39

332

1.02

279

ME4-49

20.32

2.31

527

0.44

5.12

266

1.92

261

ME4-50

20.23

1.57

467

0.34

9.40

211

4.45

256

Mean = 265 STD = 13.6 S/M = 5.14%