CN103528868A - Uranium isotope ratio analysis and source production method - Google Patents

Uranium isotope ratio analysis and source production method Download PDF

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Publication number
CN103528868A
CN103528868A CN201310498880.5A CN201310498880A CN103528868A CN 103528868 A CN103528868 A CN 103528868A CN 201310498880 A CN201310498880 A CN 201310498880A CN 103528868 A CN103528868 A CN 103528868A
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isotope ratio
uranium isotope
source production
source
side method
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CN201310498880.5A
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CN103528868B (en
Inventor
王玉学
黄秋红
郭冬发
王哲
胡小华
潘景荣
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Nuclear Industry Er Si Institute
Beijing Research Institute of Uranium Geology
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Nuclear Industry Er Si Institute
Beijing Research Institute of Uranium Geology
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Abstract

The invention belongs to the technical field of isotope source production, and in particular relates to a uranium isotope ratio analysis and source production method which is used for simplifying a source production process and shortening the source production time. The method sequentially comprises the following steps: firstly, extracting acid soluble slag through an extracting solution after dissolving ore, transferring into a glass conical flask, and adding a reducing agent; secondly, adding 36-108mg of KH2PO4 to the glass conical flask of the step 1; thirdly, placing the glass conical flask of the step 2 in an oscillating water bath, and performing sample source preparation. The method can be used for realizing rapid and accurate analysis of a uranium isotope ratio, and producing 24-100 sources in one time, by time consumption of half a day. The method is used for source production for 5 standard samples of GBW04110-GBW04114 and the like and for 234U/238U activity ratio measurement, and a relative error between a measured value and a nominal value is controlled within 2.0%.

Description

A kind of uranium isotope ratio analysis source side method processed
Technical field
The invention belongs to isotope source production technique field, be specifically related to a kind of uranium isotope ratio analysis source side method processed.
Background technology
Uranium isotope ratio 234u/ 238u can be used for fixed year of geological age, also can study for Prospecting For Uranium.The analysis of uranium isotope ratio at present mainly adopts alpha energy spectrum method, and the gordian technique of alpha energy spectrum method is source production technique.Current source production technique is to adopt after post stratography purifying uranium, carries out electro-deposition source processed, loaded down with trivial details consuming time, and work efficiency is lower, and generalized case next time can only source processed 2～5, whole cycle need 2 days.Therefore study a kind of simple and easy to do source production technique of analyzing for uranium isotope ratio extremely important.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of simple and easy to do source side method processed of analyzing for uranium isotope ratio is provided, in order to simplify source and course journey processed, to shorten source time processed.
The present invention is achieved in that
A ratio analysis source side method processed, comprises the following steps successively:
The first step, with extract, extract the sour molten slag behind molten ore deposit, proceed to glass conical flask, add reductive agent;
Second step, in the glass conical flask of the described first step, add 36～108mg KH 2pO 4;
The 3rd step, the glass conical flask of described second step is put into shaking bath, carry out the preparation of sample source.
A kind of uranium isotope ratio as above analysis source side method processed, wherein: in the first step, described extract is 0.1mol/L HCl and 2.9～3.4mol/L NaCl solution, and described reductive agent is ascorbic acid.
A kind of uranium isotope ratio as above analysis source side method processed, wherein: in the first step, described extracting liquid volume is 20～30mL, and described ascorbic acid is 0.4～1.0g.
A kind of uranium isotope ratio as above analysis source side method processed, wherein: in described the 3rd step, the temperature of controlling water-bath is 85～95 ℃, and vibration velocity is 160～200r/min, and amplitude 20mm takes out after the 60～120min that vibrates.
The invention has the beneficial effects as follows:
The present invention is a kind of simple and easy to do source production technique of analyzing for uranium isotope ratio, can realize the quick and precisely analysis of uranium isotope ratio, once can source processed 24～100, and half a day consuming time.With this invention, for 5 standard models such as GBW04110～GBW04114, carry out source processed and carry out 234u/ 238u activity ratio is measured, and measured value and nominal value relative error are in ± 2.0%.
Embodiment
Below in conjunction with embodiment, a kind of uranium isotope ratio provided by the invention analysis source side method processed is described further:
A ratio analysis source side method processed, comprises the following steps:
The first step, with extract, extract the sour molten slag behind molten ore deposit, proceed in container, add reductive agent;
Second step, in the container of the first step, add 36～108mg KH 2pO 4;
The 3rd step, the container of second step is put into shaking bath, carry out the preparation of sample source.
For obtaining better effect, can select as follows: select 0.1mol/L HCl and 2.9～3.4mol/L NaCl solution as extract, select 0.4～1.0g ascorbic acid as reductive agent; Extracting liquid volume is 20～30mL.The temperature of controlling water-bath is 85～95 ℃, and vibration velocity is 160～200r/min, and amplitude 20mm takes out after the 60～120min that vibrates.
Embodiment 1:
The present invention comprises the following steps successively:
The first step, with the 0.1mol/L HCl+2.9mol/L NaCl solution of 20mL, extract the sour molten slag behind molten ore deposit, proceed in 100mL container, then add 0.4g ascorbic acid;
Second step, add 36mg KH 2pO 4;
The 3rd step, container is put into shaking bath, the temperature of controlling water-bath is 85 ℃, and vibration velocity is 160r/min, and amplitude 20mm takes out after vibration 60min.
In this embodiment, the 234U/238U isotope measure value of GBW04127 and nominal value relative error are 1.8%.
Embodiment 2:
The present invention comprises the following steps successively:
The first step, with the 0.1mol/L HCl+3.2mol/L NaCl solution of 25mL, extract the sour molten slag behind molten ore deposit, proceed in 100mL container, then add 0.7g ascorbic acid;
Second step, add 72mg KH 2pO 4;
The 3rd step, container is put into shaking bath, the temperature of controlling water-bath is 90 ℃, and vibration velocity is 180r/min, and amplitude 20mm takes out after vibration 90min.
In this embodiment, GBW04127 234u/ 238u isotope measure value and nominal value relative error are ± 1.5%.
Embodiment 3:
The present invention comprises the following steps successively:
The first step, with the 0.1mol/L HCl+3.4mol/L NaCl solution of 30mL, extract the sour molten slag behind molten ore deposit, proceed in 100mL container, then add 1.0g ascorbic acid;
Second step, add 108mg KH 2pO 4;
The 3rd step, container is put into shaking bath, the temperature of controlling water-bath is 95 ℃, and vibration velocity is 200r/min, and amplitude 20mm takes out after vibration 120min.
In this embodiment, GBW04127 234u/ 238u isotope measure value and nominal value relative error are 2.0%.
The given embodiment of the present invention be only to a kind of uranium isotope ratio provided by the present invention analysis source side method processed for example, can not contain whole summary of the invention; The replacement that the present invention is carried out all should belong to protection domain of the presently claimed invention with modification.

Claims (4)

1. a uranium isotope ratio analysis source side method processed, comprises the following steps successively:
The first step, with extract, extract the sour molten slag behind molten ore deposit, proceed in container, add reductive agent;
Second step, in the container of the described first step, add 36～108mg KH 2pO 4;
The 3rd step, the container of described second step is put into shaking bath, carry out the preparation of sample source.
2. a kind of uranium isotope ratio according to claim 1 analysis source side method processed, is characterized in that: in the first step, described extract is 0.1mol/L HCl and 2.9～3.4mol/L NaCl solution, and described reductive agent is ascorbic acid.
3. a kind of uranium isotope ratio according to claim 2 analysis source side method processed, is characterized in that: in the first step, described extracting liquid volume is 20～30mL, and described ascorbic acid is 0.4～1.0g.
4. a kind of uranium isotope ratio according to claim 3 analysis source side method processed, is characterized in that: in described the 3rd step, the temperature of controlling water-bath is 85～95 ℃, and vibration velocity is 160～200r/min, and amplitude 20mm takes out after the 60～120min that vibrates.
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Cited By (1)

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CN105203622A (en) * 2015-10-23 2015-12-30 宁波出入境检验检疫局检验检疫技术中心 Method for determining ratio of lead isotopes in sample of different parts of waxberry tree and identifying origin of waxberry

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JPS5080880A (en) * 1973-11-16 1975-07-01
WO2007042746A2 (en) * 2005-10-11 2007-04-19 Gv Instruments Ion source preparation system
CN102455429A (en) * 2010-10-27 2012-05-16 核工业北京地质研究院 Method for measuring uranium in uranium ore
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H.KLEMENčIč ET AL.: "Alpha-spectrometric thin source preparation with emphasis on homogeneity", 《APPLIED RADIATION AND ISOTOPES》, vol. 68, 31 August 2010 (2010-08-31), pages 1247 - 1251, XP027053657 *
黄秋红等: "野外现场铀矿石中铀的快速准确测定方法研究——TOPO 萃取α 计数法", 《岩矿测试》, vol. 30, no. 4, 31 August 2011 (2011-08-31), pages 423 - 429 *

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105203622A (en) * 2015-10-23 2015-12-30 宁波出入境检验检疫局检验检疫技术中心 Method for determining ratio of lead isotopes in sample of different parts of waxberry tree and identifying origin of waxberry
CN105203622B (en) * 2015-10-23 2018-02-27 宁波出入境检验检疫局检验检疫技术中心 It is a kind of to determine the isotopic ratio of lead and the method for identifying the red bayberry place of production in strawberry tree different parts sample

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