4.2 Analytical Procedure for the Acid Extraction and Analysis of trontium-90 in Soil (14) Carrier Solutions Strontium carrier - 20 mg Sr/ml Yttrium carrier - 20 mg ¥/mi‘29) Barium carrier - 20 mg Be/ml Apparatus A detailed dJezcription of the apparatus employed in this procedure can be found in NYO-4700 ~- Manual of Standard Procedures. CONVENTIONS le The commerciai concentrated acids and ammonium hydroxide are indicated by the chanical symbol only. 2. Dilvted scids are given as parts of acid to be added to parts of 6 \N distilica water o> in some cases the normalities are given. All concentrations of dilutions axe approximate, unless stated as exact ox that prejaration or dilution in a volumetric flask is required. k, Wide wang pH pepe? may be used for obtaining pH indicated, unless measurenant with narrow range paper or a pH meter is specifically mentioned. (14) Modification of the procedure presented in NYO-4700 - Manual of (25) Stendard Procedures, Some yttrium sslts may be contaminated with thorium. A detailed procedure for “us purification c? the yttrium carrier solution by Solvent extyacticn is given in l"o-700 - Manual of Stendard Procedures. wo OL ns . Sa ” nw sm ;. . + . 7. MARL SARA: Sy sh. . = a a Gm2 - yy SR ees a . ~~: ote - + 0 . 7 ars Sr OSS _ & = Qs ws met Rs oi _ ~S SEs - a “x % * = 7 . ; ~= . . 8 4° = SAN Se PR ee . ie ~~ Xe ™ ERE ER “ay . s =e A 7 ~, & te ~My . “SAYS —_