Calibration method

N˚

experiment

Spike

concentration

expected (µg・L⁻¹)

Spike concentration

observed (µg・L⁻¹)

Yield (%)

Yields mean (%)

Recovery rate

(%)

1

2

3

1

2

3

Addition

standard

1

0.67

0.682

0.646

0.674

101.79

96.37

100.61

99.59

98.3

2

0.689

0.685

0.682

102.78

102.21

101.82

102.27

3

0.660

0.660

0.665

98.45

98.47

99.25

98.72

4

0.632

0.678

0.634

94.30

101.22

94.69

96.74

5

0.669

0.669

0.623

99.91

99.81

92.95

97.56

6

0.689

0.641

0.631

102.81

95.60

94.19

97.53

7

0.668

0.622

0.637

99.63

92.80

95.10

95.84

1

1.33

1.241

1.231

1.209

95.48

94.67

93.01

94.39

95.4

2

1.226

1.275

1.230

94.27

98.08

94.60

95.65

3

1.247

1.286

1.298

95.88

98.95

99.82

98.22

4

1.219

1.153

1.221

93.78

88.68

93.95

92.13

5

1.202

1.221

1.203

92.47

93.91

92.53

92.97

6

1.254

1.275

1.272

96.49

98.07

97.88

97.48

7

1.246

1.273

1.271

95.81

97.94

97.75

97.17

1

2.43

2.205

2.229

2.207

90.73

91.72

90.82

91.09

93.1

2

2.199

2.209

2.210

90.50

90.93

90.95

90.79

3

2.039

2.041

2.095

83.92

83.99

86.21

84.71

4

2.327

2.312

2.365

95.78

95.14

97.32

96.08

5

2.224

2.393

2.240

91.54

98.48

92.18

94.07

6

2.337

2.424

2.372

96.17

99.76

97.59

97.84

7

2.340

2.322

2.418

96.29

95.57

99.52

97.13

External

calibration

1

1.6

1.817

1.857

1.876

113.56

116.04

117.26

115.62

107.1

2

1.553

1.551

1.563

97.06

96.91

97.69

97.22

3

1.611

1.582

1.573

100.71

98.86

98.33

99.30

4

1.542

1.547

1.539

96.37

96.69

96.17

96.41

5

2.105

2.035

1.942

131.59

127.20

121.36

126.71

1

6.4

7.170

7.310

7.296

112.03

114.22

114.01

113.42

108.4

2

6.723

6.767

6.675

105.05

105.74

104.30

105.03

3

6.270

6.283

6.268

97.97

98.16

97.94

98.02

4

6.485

6.478

7.247

101.33

101.22

113.24

105.26

5

7.825

7.444

7.856

122.26

116.31

122.75

120.44