Concentration of Au (μg/ml)

Band Pass (nm)

0.2

0.5

1.0

0.4

0.39

0.51

0.55

1

1.02

0.9

1.07

2

1.98

1.90

1.20

4

4.03

3.80

3.10

8

7.94

7.50

7.01