例文
- Pigments - titanium dioxide pigments - methods of analysis ; establishing a calibration graph using the x - ray fluorescence analysis
- Calibration graph obtained by the modified procedure for ddmbac showed good linearity and its correlation coefficient was above 0 . 999 . the coefficients of variation and average recovery of added ddmbac were up to the mustard . the linear concentration ranges for batch determination of ddmbac were 0 . 06 ~ 3 . 33mg / l
