Size exclusion (radio) chromatography of aqueous humic acid solutions with cesium and strontium |
| |
Authors: | P. Rajec P. Gerhart F. Macášek I. S. Shaban P. Bartoš |
| |
Affiliation: | (1) Department of Nuclear Chemistry, Comenius University, Mlynská dolina CH-1, SK-842 15 Bratislava, Slovakia |
| |
Abstract: | The high-performance size-exclusion chromatography (HPSEC) and radiochromatography (HPSERC) was used for the identification of radiocesium and radiostrontium interaction with humic acid. It was found that the behavior of humic acid on size-exclusion chromatography is sensitive to the salt concentration and pH of the mobile phase. At lower ionic strength and in acidic region of pH, the Aldrich humic acid exhibited three main fraction within the ranges >760 kDa, 25–100 kDa and <5 kDa. Radiocesium was found in the low-molecular fractions (<1 kDa) of humic acids but radiostrontium interacts preferably with the fractions of humic acid of molecular weight within the range 2–5 kDa. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|