““ — I ‘.Poi-iii&;v& “r . - ‘ ------- ‘ .----- . .- .. 9 ANALYTICAL MET11ODS Gamma –l<ay Spectronetr~ —— — —. Al]. of the They were NaI(Tl) analyzed countccl for at least crystal Selected were samples used samples counted 3 x 3-inch detector 5 x 5-inch crys-iial~ operating Most in polyvinyl in a density of 1.0. for example, were sealed in PVC pipe. a density of 1.35 Spectrum of least were error given Strontium-90 concentration with stable opposing dried, ground to. a volume resulting hepatopancreas lobster acid, in hydrochloric samples and were and compressed to was done by Schonfeld’s A set of previously geometries individual prepared and radionuclides for decay to the date values (1965) method reference was used. spectra All of collection. The is the 95% error. Analy~es Strontium–90 solvent two a in PVC pipe. corrected for (PVC) pipe soil with spectrometer. oven spiny analyzer. either consktingof were samples, Oven–dried squares. values samples - a 3 x 3–inch minutes, as a summing dissolved resolution for the different by ashed, with sp@ctrometry a 256-channel system chloride Small with for 1,000 or a detector of the biological compressed 100 minutes in conjunction were by gamma-ray was of its extraction yttrium determined 90 by measuring Y daughter. Yttrium-90 and precipitation serving as both the was equilibrium separated techniques (Petrow,1965), .- a carrie”r and a yield ----- de- “