Quality Control of 2,5-Diphenyloxazole. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 2,5-Diphenyloxazole, is researched, Molecular C15H11NO, CAS is 92-71-7, about Preparation of polystyrene scintillation microspheres and its application in measurement of β nuclide measurement. Author is Zhang, Hui; Dai, Xiongxin.
Polystyrene scintillation microspheres (PSm) was successfully prepared by the suspension polymerization method and the swelling method in this experiment The best synthesis proportion of PSm was obtained by studying the amount of scintillator and wave transferring agent. Using PSm to measure β nuclides with different energies, the results showed that the detection efficiency of PSm was pos. correlated with the decay energy of β nuclides. The detection efficiency of 90Sr/90Y measured by PSm was close to that of scintillation cocktail, and the detection efficiency of 14C was about 39.5%. However, the detection efficiency for low-energy β nuclides 3H was extremely low of 0.3%. In the measurement of high-salt content solutions, the measurement results of scintillation fluid were inaccurate due to the delamination after mixing. PSm can effectively solve this problem and provide a new material for liquid scintillation anal.
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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica