Fig. 7From: Investigating the correlation between morphological features of microplastics (5–500 µm) and their analytical recoveryThe diagrams plot particle coverage prior to transfer (A%) against the ensuing RR of each individual transfer. A SMPs covering up to 7% of the filter, showed a strong linear correlation (y = -0.09x + 11.451, R2 = 0.8) between the two parameters, whereas B FMPs covering only up to 0.25% of the filter, showed no correlation. C and D plot RR versus A% of the individual size groups after each transfer, for FMPs and SMPs, respectively. By removing some outliers in (C), the trend becomes more apparentBack to article page