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Extraction recoveries of BMAA and D5DAB spiked at 30 ng/mL in (A) cyanobacteria and (B) mussel matrix with five different solvents (n = 3, error bars represent standard deviations). Results are expressed relatively to the recoveries in trichloroacetic acid (TCA) 0.1 M. * p < 0.01 and ** p < 0.001 compared to TCA 0.1 M. FA, formic acid; AA, acetic acid.
