Estimation of Ion Competition via Correlated Responsivity Offset in Linear Ion Trap Mass Spectrometry Analysis: Theory and Practical Use in the Analysis of Cyanobacterial Hepatotoxin Microcystin-LR in Extracts of Food Additives
Evaluation of root mean square errors (RMSEs) for linear and exponential fittings. Fittings were done for concentration-response dependences for areas and maximal intensities of the MCYSTLR molecular ion of m/z 995 [M + H]+ and sodium adduct ion of m/z 509 . Manually and automatically obtained values were fitted for all samples (pure MCYSTLR and MCYSTLR in Stigeoclonium sp. extract and salmon hydrolyzate).