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Start Over Author "Lee, Yu Ri" Journal analytical letters
5 results on '"Lee, Yu Ri"'

1. Study of the Transition Pattern of Heavy Metal Absorption in a Rice-Related Matrix

Author

Lee Yu Ri, Eun Mi Choi, Sung Hwa Choi, and Kyung Su Park

Subjects
inorganic chemicals, Cadmium, Biochemistry (medical), Clinical Biochemistry, food and beverages, chemistry.chemical_element, Heavy metals, Arsenic speciation, Biochemistry, Analytical Chemistry, Mercury (element), Matrix (chemical analysis), chemistry, Health hazard, Metal absorption, Environmental chemistry, Electrochemistry, Spectroscopy, Arsenic
Abstract

Exposure to heavy metals, including arsenic (As), lead (Pb), cadmium (Cd), and mercury (Hg), is a major health hazard. The toxic effects of these heavy metals can exist in a latent state. These met...

Published
2021

5. Retention of Large Biological Molecules by Size-Exclusion Chromatography.

Author

Lee, Yu Ri, Li, Xiaoxia, Ma, Wanwan, and Row, Kyung Ho

Subjects
*BIOMOLECULES, *GEL permeation chromatography, *MOLECULAR size, *POLYSACCHARIDES, *MOLECULAR weights
Abstract

Size-exclusion chromatography has been developed for the separation of large biological molecules including proteins, polymers, peptides, nucleic acids, and polysaccharide according to their molecular size. This study determined the retention factors for dextran (5, 25, 50, 270, 670, and 1100 kDa) and polysaccharides, such as fucoidan, alginic acid, and laminarin, in the size-exclusion chromatography stationary phase. In addition, the molecular weights and retention factor of three polysaccharides were calculated from the dextran standard curve. The largest retention factor was 4.26 using the size-exclusion chromatography columns (5 kDa dextran). The molecular weights of fucoidan, alginic acid, and laminarin were determined to be 250, 200, and 5 to 64 kDa, respectively. [ABSTRACT FROM AUTHOR]

Published
2017
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