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Table 2 Comparison of linearity, accuracy, and precision of analysis method by extraction solution(n = 5)

From: Establishment of analysis method for the quantification of residues of halquinol and its metabolites in livestock and fishery products using liquid chromatography–tandem mass spectrometry

Sample

Compound

80% MeCN containing 100 ppm of Na2-EDTA

80% MeCN

R2

Spiking levels

(μg kg−1)

Average recovery (%)

CV (%)

R2

Spiking levels

(μg kg−1)

Average recovery (%)

CV (%)

Beef

5-CHQ

0.9989

5

96.73

8.15

0.9814

5

120.37

12.72

10

97.18

3.73

10

110.37

19.44

20

100.41

3.86

20

81.92

16.39

5,7-DCHQ

0.9989

5

103.00

7.32

0.9923

5

110.78

6.39

10

105.77

7.90

10

91.62

4.83

20

111.14

9.29

20

80.17

6.14

5-CHQG

0.9972

5

115.92

4.57

0.9998

5

94.49

12.42

10

92.50

9.56

10

83.61

5.67

20

76.40

5.40

20

85.80

9.31

5,7-DCHQG

0.9968

5

118.65

5.34

0.9988

5

104.63

12.05

10

96.32

6.56

10

92.02

7.50

20

77.70

5.31

20

90.41

8.48

Pork muscle

5-CHQ

0.9981

20

94.80

7.75

0.9521

20

101.60

12.34

40

103.40

4.24

40

110.40

39.60

80

106.56

3.05

80

64.32

18.10

5,7-DCHQ

0.9996

20

106.86

4.12

0.9867

20

111.48

8.33

40

104.54

4.28

40

104.32

14.59

80

100.42

7.25

80

85.30

5.36

5-CHQG

0.9996

20

97.77

16.03

0.9990

20

92.16

20.63

40

87.18

14.22

40

81.68

11.86

80

90.48

13.52

80

102.51

14.30

5,7-DCHQG

0.9991

20

94.14

15.62

0.9941

20

81.94

21.87

40

87.90

14.20

40

80.84

9.35

80

93.09

12.10

80

99.52

11.73

Chicken

5-CHQ

0.9998

5

95.80

9.05

0.9125

5

67.06

26.98

10

99.68

5.38

10

69.86

84.03

20

97.94

3.79

20

131.63

28.13

5,7-DCHQ

0.9988

5

95.99

8.57

0.9867

5

70.33

16.33

10

99.78

6.47

10

77.80

42.85

20

98.56

3.32

20

123.57

18.00

5-CHQG

0.9969

5

112.92

11.11

0.9975

5

104.62

8.05

10

99.08

3.24

10

95.51

11.56

20

78.44

3.58

20

103.75

10.34

5,7-DCHQG

0.9975

5

119.34

2.74

0.9982

5

99.57

5.58

10

98.98

3.48

10

91.78

8.66

20

77.32

2.70

20

99.28

10.77

Egg

5-CHQ

0.9996

5

97.60

8.93

0.9716

5

152.67

24.82

10

106.12

2.99

10

153.92

10.29

20

96.89

6.68

20

102.44

21.39

5,7-DCHQ

0.9995

5

104.60

2.95

0.9987

5

101.29

5.91

10

104.47

5.50

10

89.44

3.22

20

105.98

2.77

20

78.68

7.30

5-CHQG

0.9982

5

90.37

27.98

0.9997

5

114.49

4.77

10

103.11

16.11

10

110.98

5.92

20

101.77

13.63

20

90.21

6.76

5,7-DCHQG

0.9971

5

96.90

28.66

0.9992

5

112.84

2.74

10

99.98

12.05

10

114.72

3.95

20

99.19

9.80

20

94.39

7.63

Milk

5-CHQ

0.9995

5

91.30

4.95

0.9902

5

78.31

29.95

10

95.59

4.89

10

42.82

23.69

20

98.57

3.53

20

46.66

39.86

5,7-DCHQ

0.9987

5

105.81

8.50

0.9921

5

96.57

32.62

10

106.06

10.55

10

63.27

18.34

20

107.00

5.15

20

68.18

16.72

5-CHQG

0.9944

5

120.22

28.07

0.9881

5

149.63

30.45

10

90.45

27.83

10

129.39

11.99

20

109.82

25.48

20

200.95

21.51

5,7-DCHQG

0.9987

5

88.65

27.17

0.9919

5

106.48

49.77

10

81.65

24.94

10

128.60

8.86

20

102.48

25.75

20

169.59

25.00