Magnesium isotope effects by ion exchange using monoazacrown bonded Merrifield peptide resin

被引：0

作者：

Kim, Dong Won ^{[1
]}

Ryu, Hai Il ^{[1
]}

Jeon, Byeong Kwang ^{[1
]}

机构：

[1] Department of Chemistry, College of Natural Sciences, Chungbuk National University, Cheongju 361-763, Korea, Republic of

来源：

Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences | 2002年 / 57卷 / 09期

关键词：

Crown ethers - Chromatographic analysis - Ion chromatography - Isotopes - Resins - Ions - Magnesium - Peptides;

D O I：

10.1515/znb-2002-0914

中图分类号：

学科分类号：

摘要：

Magnesium isotope effects by ion exchange using monoazacrown (1-aza-18-crown-6) bonded Merrifield peptide resin were investigated. The capacity and distribution coefficient were determined. The separation factors, (24Mg2+/25Mg2+)Resin/( 24Mg2+/25Mg2+)Solution, (24Mg2+/26Mg2+)Resin/( 24Mg2+/26Mg2+)Solution, and(25Mg2+/26Mg2+Resin/( 25Mg2+/25Mg2+)Solution were 1.0071, 1.0132, and 1.0068, respectively. The heavier magnesium isotopes were enriched in the solution phase, while the lighter isotopes were enriched in the resin phase. It was found that the hydration and isotope mass effects are more significant than that of the complexation.

引用

页码：1072 / 1077