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题名: Boron separation by the two-step ion-exchange for the isotopicmeasurement of boron
作者: Wang, QZ ;  Xiao, YK ;  Wang, YH ;  Zhang, CG ;  Wei, HZ
刊名: CHINESE JOURNAL OF CHEMISTRY
出版日期: 2002
卷号: 20, 期号:1, 页码:45-50
英文摘要: An improved procedure for extraction and purification of boron from natural samples is presented. The separation and purification of boron was carried out using a boron-specific resin, Amberlite IRA743, and a mixed ion exchange resin, Dowex 50W x 8 and Ion Exchanger II resin. Using the mixed ion exchange resin which adsorbs all cations and anions except boron, the HCl and other cations and anions left in eluant from the Amberlite IRA 743 were removed effectively. In this case, boron loss can be avoided because the boron-bearing solution does not have to be evaporated to reach dryness to dislodge HCl. The boron recovery ranged from 97.6% to 102% in this study. The isotopic fractionation of boron can be negligible within the precision of the isotopic measurement. The results show that boron separation for the isotopic measured ment by using both Amberlite IRA 743 resin and the mixed resin is more effective than that using Amberlite IRA 743 resin alone. The boron in samples of brine, seawater, rock, coral and foraminifer were separated by this procedure. Boron iso, topic compositions of these samples were measured by thermal ionization mass spectrometry in this study. An improved procedure for extraction and purification of boron from natural samples is presented. The separation and purification of boron was carried out using a boron-specific resin, Amberlite IRA743, and a mixed ion exchange resin, Dowex 50W x 8 and Ion Exchanger II resin. Using the mixed ion exchange resin which adsorbs all cations and anions except boron, the HCl and other cations and anions left in eluant from the Amberlite IRA 743 were removed effectively. In this case, boron loss can be avoided because the boron-bearing solution does not have to be evaporated to reach dryness to dislodge HCl. The boron recovery ranged from 97.6% to 102% in this study. The isotopic fractionation of boron can be negligible within the precision of the isotopic measurement. The results show that boron separation for the isotopic measured ment by using both Amberlite IRA 743 resin and the mixed resin is more effective than that using Amberlite IRA 743 resin alone. The boron in samples of brine, seawater, rock, coral and foraminifer were separated by this procedure. Boron iso, topic compositions of these samples were measured by thermal ionization mass spectrometry in this study.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2346
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Wang, QZ,Xiao, YK,Wang, YH,et al. Boron separation by the two-step ion-exchange for the isotopicmeasurement of boron[J]. CHINESE JOURNAL OF CHEMISTRY,2002,20(1):45-50.
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