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Table 3 The adsorption value and rate of Au standard solution by untreated and treated PUFs

From: Gold determination in soil by ICP-MS: comparison of sample pretreatment methods

Standard value (ng/g)

Untreated PUF

Treated PUF

Adsorption value (ng/g)

RSD (%)

Adsorption rate (%)

Adsorption value (ng/g)

RSD (%)

Adsorption rate (%)

0.50

0.43

9.5

86.0

0.49

8.8

98.0

1.00

0.84

6.8

84.0

0.97

9.0

97.0

5.00

4.05

4.0

81.0

4.83

3.0

96.6

10.00

7.92

0.6

79.2

9.57

2.0

95.7

50.00

39.31

3.5

78.6

47.46

1.2

94.9

100.00

77.14

1.9

77.1

92.58

1.5

92.6

  1. PUF polyurethane foam, RSD relative standard deviation