Regression equation Correlation coefficient Linear range (g/mL)
I=1.3C+13.0 0.9979 1.0×10-9–1.0×10-8
I=9.9 C+13.7 0.9980 1.0×10-8–1.0×10-7
I=54.2C+57.4 0.9978 1.0×10-7–1.0×10-6
I=331.6C+201.5 0.9972 1.0×10-6–1.0×10-5
I=499.2C+3165.3 0.9984 1.0×10-5–6.0×10-5
Table 1: Regression equation and RSD for determinations of FLX.