Table 3 Linearity and range data

Ethanol

(98.6–1578)

Day 1

y = 0.007237*x + 0.115075

0.9961

Day 2

y = 0.007259*x + 0.102598

0.9956

Day 3

y = 0.006469*x + 0.136147

0.9978

Isopropanol

(98.1–1570)

Day 1

y = 0.026679*x + 0.879872

0.9926

Day 2

y = 0.026658*x + 0.809167

0.9932

Day 3

y = 0.024935*x + 0.805491

0.9949

Benzene

(0.0107–0.171)

Day 1

y = 0.091878*x − 0.000072

0.9945

Day 2

y = 0.095407*x−0.000148

0.9950

Day 3

y = 0.127246*x + 0.000073

0.9997

Acetaldehyde

(0.265–4.25)

Day 1

y = 0.026885*x + 0.000006

0.9972

Day 2

y = 0.026836*x − 0.000426

0.9951

Day 3

y = 0.025028*x + 0.000546

0.9991

Acetal

(0.264–4.22)

Day 1

y = 0.031232*x − 0.002264

0.9931

Day 2

y = 0.034845*x−0.002868

0.9916

Day 3

y = 0.043868*x − 0.001841

0.9992

Methanol

(3.34–53.4)

Day 1

y = 0.009561*x + 0.005666

0.9960

Day 2

y = 0.009483*x + 0.004019

0.9954

Day 3

y = 0.008795*x + 0.001703

0.9996