UNCLA SSIFTED Table Aw2 Statistical Analysis of Sr°° Recovery Factor DéF Sum of Squares Varjance F Ratio Bone 2 139213 69606.5 1.9 Acid 2 1737535 868767.5 18.65 Volume 2 101050 5200 1.12 Bone x Acid 58,332 146083. 3 Us Bone x Vol. ky 158703 39675.8 0.85 Acid x Vol. 4 214.598 536u9.5 1.15 Error 8 372602 4657502 26 3311063 +++ 1(99%) Interactions TOTAL The major significant factor is the acid concentration. The higher recovery was found for the 75% HNO,, where an average of 99.1% was obtained, with little effect from the volume of acid used. The worst separation, and thus the apparently poorest recovery, was with the low volume of 78% HNO,. This value of 70% is caused by self-absorp- tion in the sample. Aw& 9C’ UNCLASSIFIED