Column packings for high-performance liquid chromatography and positron annihilation lifetime spectroscopy

被引：5
|
作者：
Sausa, O. [1 ]
Kristiak, J.
Berek, D.
Iskrova, M.
机构：
[1] SAS, Inst Phys, Bratislava 84511, Slovakia
[2] SAS, Inst Polymer, Bratislava 84236, Slovakia
来源：
RADIATION PHYSICS AND CHEMISTRY | 2007年 / 76卷 / 02期
关键词：
positron annihilation; silica gel; free volume;
D O I：
10.1016/j.radphyschem.2006.03.049
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Positron annihilation measurements as a function of temperature and the length of bonded alkyl groups have been carried out on silica gel samples. Silica gel samples were bare and bonded with alkyl group from C1s up to C18. The diameters of pores were deduced from the lifetime of trapped ortho-positronium (o-Ps), and it was found that o-Ps lifetime provides reasonable information on the pore sizes for both bare and alkyl bonded silica gels. (c) 2006 Elsevier Ltd. All rights reserved.
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页码：271 / 274
页数：4
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