Platform,Collector,TC (µmol),,N (µmol),,PIC (µmol),,bSi (µmol),,Mass (mg),,234Th (dpm/m2/d), ,,mean,SD,mean,SD,mean,SD,mean,SD,mean,SD,mean,SD NBST/STT,NBST_tube,6.2,0.3,0.86,0.03,0.01,0.03,0.12,0.09,0.17,0.03,45,23 STT,PIT_modified,3.3,0.3,0.56,0.04,0.02,0.07,0.1,0.05,0.15,0.07,105,76 PELAGRA,PELAGRA_cup,2.5,0.2,0.54,0.01,0.03,0.06,0.06,0.01,0.09,0.01,10,3 "Table 1. Mean process blank values for a single split. 234Th blanks were not subtracted, but are reported in units of flux for reference."