Boron separation by the two-step ion-exchange for the isotopicmeasurement of boron

ISL OpenIR > 青海盐湖研究所知识仓储

	Boron separation by the two-step ion-exchange for the isotopicmeasurement of boron
	Wang, QZ; Xiao, YK; Wang, YH; Zhang, CG; Wei, HZ
	2002
发表期刊	CHINESE JOURNAL OF CHEMISTRY
ISSN	1001-604X
卷号	20 期号:1 页码:45-50
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.
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2346
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	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.
APA	Wang, QZ,Xiao, YK,Wang, YH,Zhang, CG,&Wei, HZ.(2002).Boron separation by the two-step ion-exchange for the isotopicmeasurement of boron.CHINESE JOURNAL OF CHEMISTRY,20(1),45-50.
MLA	Wang, QZ,et al."Boron separation by the two-step ion-exchange for the isotopicmeasurement of boron".CHINESE JOURNAL OF CHEMISTRY 20.1(2002):45-50.