| 不同溶剂对沉积物碳酸盐组分中硼的提取和硼同位素组成的影响的研究 |
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| 引用本文： | 杨剑,马云麒,彭章旷,李海军,柴小丽,肖应凯,张艳灵.不同溶剂对沉积物碳酸盐组分中硼的提取和硼同位素组成的影响的研究[J].盐湖研究,2018,26(3). |
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| 作者姓名： | 杨剑 马云麒 彭章旷 李海军 柴小丽 肖应凯 张艳灵 |
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| 作者单位： | 中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目）；中国科学院关键技术人才项目 |
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| 摘 要： | 本实验研究了采用不同溶剂（盐酸、醋酸、饱和EDTA-2Na盐等）对沉积物样品中的碳酸盐组分硼元素提取和硼同位素组成的影响。结果表明，1mol/L的醋酸是溶解沉积物样品中碳酸盐组分的最佳溶剂，能将沉积物中的碳酸盐完全溶解，并有效避免样品中石膏、硅酸盐等矿物的溶出，对其中铁的氧化物等影响也比较小，同时，过硼特效树脂前将溶液调至弱碱性所用的亚沸氨水的量较少，从而引入的本底较少。采用盐酸和饱和EDTA-2Na溶液溶解沉积物，容易将沉积物中除碳酸盐以外的矿物中的硼溶出，如石膏、硅酸盐矿物等，不利于碳酸盐组分中硼的提取。
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| 关 键 词： | 碳酸盐组分 盐酸 醋酸 EDTA-2Na 硼溶出量 硼同位素组成 |
| 收稿时间： | 2017/11/6 0:00:00 |
| 修稿时间： | 2017/12/7 0:00:00 |
The Influence of Different Solvents on the Extraction of Boron and Isotopic Composition of Boron in Carbonate Component of Sediments |
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| Yang Jian,Ma Yun Qi,Peng Zhang Kuang,Li Hai Jun,Chai Xiao Li,Xiao Ying Kai and Zhang Yan Ling.The Influence of Different Solvents on the Extraction of Boron and Isotopic Composition of Boron in Carbonate Component of Sediments[J].Journal of Salt Lake Research,2018,26(3). |
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| Authors: | Yang Jian Ma Yun Qi Peng Zhang Kuang Li Hai Jun Chai Xiao Li Xiao Ying Kai and Zhang Yan Ling |
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| Abstract: | Abstract: In this paper, the influence of different solvents (hydrochloric acid, Acetic acid and EDTA-2Na solution) on the extraction of boron and isotopic composition of boron from carbonate in sediments was studied. The result showed that 1mol/L hydrochloric acid (HAc) was proved to be the best one for extraction of boron from carbonate in sediments, which can completely dissolve carbonate, but 1mol/L HAc has little effect on gypsum, silicate, iron oxides and other minerals. Meanwhile, before the solution was injected into the resin, the sub-boiling ammonia was used to adjust pH to weak alkaline, and the amount of the sub-boiling ammonia was less. So the background was less. Carbonate sediments were dissolved by hydrochloric acid and saturated EDTA-2Na solution, which was easy to remove boron from other minerals than carbonates, such as gypsum, silicate minerals, etc. It was unfavorable to extract boron from carbonate components. |
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| Keywords: | Carbonate component hydrochloric acid Acetic acid EDTA-2Na Extracted boron content Boron isotope composition |
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