10 TTT TTT — TTT TTT] POTTY E 4 Duplicates overlap within 2 o a A Duplicates fail to overlap within 2 o i 4, 7 A ie A r oO E C 7* A A r izZ 4 L A 0.001 |— EE C C / Fr LL / 7 0.0001 // / Ie vf 7 g aZ7 ‘ ~4 q a 5 7 4 os aya 5 0.01 - a 7 fa r - 0.0001 “ a7 P 5 & < A - < Y “ 0.7 = T4174 Yo 7 1.0 = = TTT TTT i 4 “ == A J 7 / 4 7 -4: ; : 4 US 4 pop tt 0.001 0.01 0.1 1.0 Lot visi 10 Aliquot B (pCi/q) Figure A44. Unacceptable quality contro] results for duplicate pairs analyzed for 241 Am in soil by Eberline Instrument Corporation. Broken line represents perfect agreement and is not a fit to the data. Five unacceptable pairs involving negative concentrations or detection limits are not shown. 72