Parameter Benzene Toluene Chloro benzene
Linearity range (ppm) 0.9-3.2 3.7-162.7 2.5-153.3
Regression equation Y=4.525x+0.142 Y=46.34x+33.60 Y=3.5661x+3.7082
Correlation coefficient 0.996 0.9993 0.9997
Slope 4.5257 46.34 3.5661
Intercept 0.1424 33.60 3.7082
LOD (μg ml-1) 0.3 1.2 0.8
LOQ (μg mL-1) 0.9 3.7 2.5
Table 2: Linearity plot details of three residual solvents.