10¢ TTT 177 E TTT TTT TT TTT — r @ Duplicates overlap within 2 o | © Duplicates fail to overlap within 2 o TTT? 7 ye 4 yy - 4 4 = 7 1.0 . 7 LC a ~ ao r = g to ° A ft ° otk - 3 r = < rT / / — — Oo 5 am _ s “| / _ 4 e °° e We a eF%e 2 e, _ _ ogre® e@ 6% 0.01;-= C yY 7 7.,° r oJ e | - UY 7 0.001 ; 7 y r t — e/7e 7 0.001 o/ e / / yo 4 po ttl 0.01 bo tl 0.1 tL ttittul 1.0 ¢ tetris 10 Figure Al8. Acceptable quality control results for duplicate pairs analyzed for 20Sr in marine organisms by Environmental Analysis Laboratory. Broken line represents perfect agreement and is not a fit to the data. Twenty-five acceptable pairs involving zero concentrations are not shown. 46 faGeubaitbwaminemede SocaTe Aliquot B (pCi/g)