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Table 2 Linearity, LODs, LOQs, and accuracy study of VOCs

From: Method validation and measurement uncertainty of possible thirty volatile organic compounds (VOCs) presented in the polyethylene present in bottled drinking waters sold in Turkey

Compound

Coefficient correlation (r2)

Calibration curve equation (y = ax + b)

Linear dynamic range (μg/L)

LOD (μg/L)

LOQ (μg/L)

Mean recovery (%)

RSD (%)

Dichloromethane

0.9991

y = 18054x + 213661

2.00–20.00

0.024

0.079

88.9

4.62

1,1-Dichloroethane

0.9998

y = 32546x − 500.11

0.15–20.00

0.023

0.076

92.7

7.17

Trichloromethane

0.9998

y = 34184x − 5046.6

0.15–20.00

0.019

0.063

95.1

4.16

1,2-Dichloroethane

0.9996

y = 13031x − 2191.5

0.15–20.00

0.036

0.120

93.3

2.65

Benzene

0.9997

y = 75303x + 9609.7

0.15–20.00

0.019

0.065

92.5

5.69

Trichloroethene

0.9990

y = 24918x − 6931.5

0.15–20.00

0.027

0.091

91.9

7.86

Bromodichloromethane

0.9988

y = 20290x − 8183.6

0.15–20.00

0.029

0.097

90.7

2.97

Toluene

0.9996

y = 97609x + 97944

0.25–20.00

0.017

0.058

94.0

6.14

Dibromochloromethane

0.9983

y = 10346x − 5086.4

0.15–20.00

0.039

0.130

88.9

3.41

Tetrachloroethene

0.9999

y = 22962x − 363.87

0.15–20.00

0.024

0.080

87.2

7.91

Tetrachloromethane

0.9993

y = 12673x − 3735.9

0.15–20.00

0.021

0.071

94.6

2.48

1,1,1,2-Tetrachloroethane

0.9993

y = 17912x − 5135

0.15–20.00

0.028

0.093

88.1

3.66

Ethylbenzene

0.9999

y = 121781x + 6841.1

0.15-20.00

0.015

0.050

92.7

6.17

P&M-Xylenea

0.9997

y = 44856x − 9081.3

0.30–40.00

0.011

0.037

95.1

7.14

Styrene

0.9999

y = 57766x − 10087

0.15–20.00

0.014

0.047

82.6

3.29

O-Xylene

0.9998

y = 93040x − 2895.5

0.15–20.00

0.021

0.071

95.9

4.58

Tribromomethane

0.9989

y = 4559.6x − 1681.6

0.15–20.00

0.035

0.116

89.4

3.19

1,1,2,2-Tetrachloroethane

0.9995

y = 8716.6x − 2753.5

0.15–20.00

0.040

0.133

91.3

2.65

Isopropylbenzene

0.9996

y = 133550x + 18469

0.15–20.00

0.012

0.038

91.9

6.98

N-Propylbenzene

0.9998

y = 236680x + 35492

0.15–20.00

0.016

0.054

94.3

7.83

1,3,5-Trimethylbenzene

0.9999

y = 112267x + 11792

0.15–20.00

0.016

0.056

95.0

7.24

1,2,4-Trimethylbenzene

0.9998

y = 107730x + 14524

0.15–20.00

0.015

0.045

97.4

5.65

1,3-Dichlorobenzene

0.9996

y = 44536x − 5264.9

0.15–20.00

0.013

0.043

98.6

3.04

1,4-Dichlorobenzene

0.9996

y = 39184x − 2500.3

0.15–20.00

0.019

0.061

99.2

3.71

1,2-Dichlorobenzene

0.9999

y = 31839x − 3378.3

0.15–20.00

0.011

0.035

98.4

2.61

1,3,5-Trichlorobenzene

0.9999

y = 31299x + 168.14

0.15–20.00

0.012

0.041

97.1

4.98

1,2,4-Trichlorobenzene

0.9999

y = 17134x − 2202.7

0.15–20.00

0.014

0.047

96.6

4.01

Naphthalene

0.9997

y = 17499x − 5484.5

0.15–20.00

0.012

0.040

95.3

5.22

Hexachloro-1,3-butadiene

0.9994

y = 16910x + 2436.6

0.15–20.00

0.025

0.083

93.8

9.19

1,2,3-Trichlorobenzene

0.9997

y = 9467.3x − 894.31

0.15–20.00

0.021

0.069

103.1

4.51

  1. aIn accuracy study, measurements of p&m-xylene were performed for 2 μg/L, 4 μg/L and 10 μg/L standard solutions
  2. RSD: relative standard deviation