| Boron Separation by the Two—step Ion—Exchange for the Isotopic Measurement of Boron |
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| 引用本文： | 王庆忠
,肖应凯
,王蕴惠
,张崇耿
,魏海珍.Boron Separation by the Two—step Ion—Exchange for the Isotopic Measurement of Boron[J].中国化学,2002,20(1):45-50. |
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| 作者姓名： | 王庆忠 肖应凯 王蕴惠 张崇耿 魏海珍 |
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| 作者单位： | WANG，Qing-Zhong XIAO，Ying-Kai WANG，Yun-Hui ZHANG，Chong-Geng WEI，Hai-ZhenQinghai Institute of Salt Lakes，Chinese Academy of Sciences，Xining，Qinghai 810008，China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina (No.2 9775 0 2 8) |
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| 摘 要： | ＩｎｔｒｏｄｕｃｔｉｏｎＬａｒｇｅｖａｒｉａｔｉｏｎｓｉｎｔｈｅｉｓｏｔｏｐｉｃｃｏｍｐｏｓｉｔｉｏｎｏｆｂｏｒｏｎｏｃｃｕｒｉｎｎａｔｕｒｅ .ＴｈｅｂｏｒｏｎｉｓａｕｓｅｆｕｌｔｒａｃｅｒｏｆｔｈｅｓｏｕｒｃｅｓａｎｄｅｖｏｌｕｔｉｏｎｏｆａｑｕｅｏｕｓｆｌｕｉｄｓｉｎｔｈｅＥａｒｔｈ’ｓｃｒｕｓｔａｎｄｈｙｄｒｏｓｐｈｅｒｅ .1 6Ｏｗｉｎｇｔｏｉｍｐｒｏｖｅｍｅｎｔｓｏｆａｎａ ｌｙｔｉｃａｌｍｅｔｈｏｄｓ ,7,8ａｒａｐｉｄｉｎｃｒｅａｓｅｈａｓｂｅｅｎｓｅｅｎｉｎｍａｎｙｓｔｕｄｉｅｓｏｆｔ…
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| 关 键 词： | 二步离子交换 硼分离 同位素测定 |
Boron Separation by the Two-step Ion-Exchange for the Isotopic Measurement of Boron |
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| WANG,Qing-Zhong XIAO,Ying-Kai WANG,Yun-Hui ZHANG,Chong-Geng WEI,Hai-ZhenQinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Qinghai ,China.Boron Separation by the Two-step Ion-Exchange for the Isotopic Measurement of Boron[J].Chinese Journal of Chemistry,2002,20(1):45-50. |
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| Authors: | WANG Qing-Zhong XIAO Ying-Kai WANG Yun-Hui ZHANG Chong-Geng WEI Hai-ZhenQinghai Institute of Salt Lakes Chinese Academy of Sciences Xining Qinghai China |
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| Institution: | WANG,Qing-Zhong XIAO,Ying-Kai WANG,Yun-Hui ZHANG,Chong-Geng WEI,Hai-ZhenQinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Qinghai 810008,China |
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| Abstract: | 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 × 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 measurement 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 isotopic compositions of these samples were measured by thermal ionization mass spectrometry in this study. |
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| Keywords: | boron separation of boron ion exchange isotopic measurement |
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