Laureano-Perez L, Collé R, Jacobson D R, Fitzgerald R, Khan N S, Dmochowski I J
Physical Measurement Laboratory, National Institute of Standards and Technology,(1) 100 Bureau Drive Gaithersburg, MD 20899-8462, USA.
Appl Radiat Isot. 2012 Sep;70(9):1997-2001. doi: 10.1016/j.apradiso.2012.02.099. Epub 2012 Mar 9.
In collaboration with the University of Pennsylvania, a (222)Rn emanation source was used for the determination of the binding affinity of radon to a cryptophane molecular host. This source was similar to a (222)Rn emanation standard that was developed and disseminated by the National Institute of Standards and Technology (NIST). The novel experimental design involved performing the reactions at femtomole levels, developing exacting gravimetric sampling methods and making precise (222)Rn assays by liquid scintillation counting. A cryptophane-radon association constant was determined, K(A)=(49,000±12,000) L mol(-1) at 293 K, which was the first measurement of radon binding to a molecular host.
与宾夕法尼亚大学合作，使用了一个（222）Rn 发射源来测定氡与穴醚分子主体的结合亲和力。该源类似于美国国家标准与技术研究院（NIST）开发并分发的（222）Rn 发射标准。新颖的实验设计包括在飞摩尔水平上进行反应、开发精确的重量分析采样方法以及通过液体闪烁计数进行精确的（222）Rn 测定。测定了穴醚 - 氡缔合常数，在 293 K 时 K(A) =（49000 ± 12000）L·mol⁻¹，这是对氡与分子主体结合的首次测量。
