【摘要】 本文在已建立的切仑可夫辐射结合液体闪烁测量测定³²P、⁴⁵Ca双标记样品方法的基础上进一步建立淬灭校正方法,并提出以切仑可夫辐射为主的混合介质³²P、⁴⁵Ca双标记样品的测定方法。切仑可夫测量和液闪测量淬灭指标分别选用样品道比和H数,淬灭校正结果在常用范围内误差小于10％,可满足一般测量要求。固相法尚不能作淬灭校正,但其对化学淬灭耐受性强、经脱色的样品即可应用。本文亦对有关方法学问题作了探讨。更多还原

【Abstract】 Three practical procedures are described for the determination of phosphorus-32 and calcium-45 by cerenkov radiation and liquid scintillation counting. The activity of phosphorus-32 was estimated by cerenkov counting and the sum of the activities of both nuclides were measured by liquid scintillation technique after the addition of scintillation cocktail or triton-X 100(with 1% S.A). Quench correction was accomplished by the sample channel ratio(SCR) and by H-number(H~#) in ceren- kov and scintillation technique respectively. All the percent differences(D%)of the corrected count rate are below 10% for general use except for that color quench correction can not be achieved in paper disc method. The experimental results indicate the suitability of the methods for the simultaneous determination of these nuclides.更多还原