Korean J Nucl Med.  1998 Aug;32(4):391-395.

A Comparison Study of Radiostrontium Chelation with Chitin, Chitosan, EDTA and DTPA

• Bom HS
• Kim YH
• Kim JY

Abstract

PURPOSE: Chitin and chitosan are nontoxic natural chelators that chelate radiostrontium effectively. The purpose of this study was to compare radiostrontium chelation of chitin and chitosan with that of well known chemical chelators, namely EDTA and DTPA.
MATERIALS AND METHODS
The chelaton rates of chitin, chitosan, EDTA and DTPA were compared using a column chromatography method (Sephadex G-25M, Sweden). Three kinds of chitins and four kinds of chitosans were used. All of them were water soloble.
RESULTS
Phosphated chitosan showed the highest chelation yield of more than 97% at pH 7. All of chitins, chitosans, EDTA and DTPA showed chelation yield of more than 90% independent of varing pH level.
CONCLUSION
Chitin and chitosan have similar chelation rate as compared with EDTA and DTPA.

Keyword

Chitin; Chitosan; EDTA; DTPA; Chelation; Radiostrontium

MeSH Terms

Chelating Agents
Chitin*
Chitosan*
Chromatography
Edetic Acid*
Hydrogen-Ion Concentration
Pentetic Acid*
Chelating Agents
Chitin
Chitosan
Edetic Acid
Pentetic Acid