he analyte using its characteristic fragments at first. If no positive
signals are detected in the MS/MS experiments, the sample tested
contains no the analyte. For quantitative analysis, as the matrix in
the example is not blank, and thus the method of standard addition has been used. For example, the characteristic fragments of
oxybenzone in the MS/MS experiments showed linear responses
to their concentrations in the contaminated samples, with a linear equation of y= 25.2x+ 215.5 (R2 = 0.989) (Fig. 4). However, the