Mass of OPH (µg)

Linear Regression

Sensitivity (µS/ppm)

Correlation Coefficient

0

y = 5.75x + 74.89

5.75

0.895

35

y = 7.88x + 58.58

7.88

0.797

70

y = 20.67x + 108.70

20.67

0.925

105

y = 20.68x + 86.37

20.68

0.990

140

y = 14.72x + 88.22

14.72

0.934

175

y = 20.16 x + 93.66

20.16

0.959