The determination of REE in Boxian meteorite by simple chemical group separation and Ge (Li) -gamma ray spectrometry

Zhiming Zhou; Ruikang Yang; Xiachen Zhi

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The determination of REE in Boxian meteorite by simple chemical group separation and Ge (Li) -gamma ray spectrometry

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- The determination of REE in Boxian meteorite by simple chemical group separation and Ge (Li) -gamma ray spectrometry
- Nuclear Techniques Vol. 08, Issue 3, (1985)
- 作者机构：
  
  1.中国科学院原子能研究所
  2.中国科学技术大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：04 November 1983，
  
  Published：1985
- 稿件说明：
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Zhiming Zhou, Ruikang Yang, Xiachen Zhi. The determination of REE in Boxian meteorite by simple chemical group separation and Ge (Li) -gamma ray spectrometry[J]. Nuclear techniques, 1985, 08(3): 36-38,74.
DOI：

Zhiming Zhou, Ruikang Yang, Xiachen Zhi. The determination of REE in Boxian meteorite by simple chemical group separation and Ge (Li) -gamma ray spectrometry[J]. Nuclear techniques, 1985, 08(3): 36-38,74. DOI：

摘要

亳县陨石是一种球粒陨石，它于1977年10月20日降落在安徽省亳县张沃吝子门大队。落地时陨石破裂成两块，相距2000米，大块（1号样）重约5.5公斤，小块（2号样）重约2.5公斤。文中3号样系该陨石的近表部、但不含熔壳的样品。两块陨石的主要化学成分相同。陨石球粒和基质的主要矿物成分基本相同，主要有斜方辉石、少量单斜辉石、橄榄石、尖晶石、钛铁矿、陨硫铁、铁纹石、镍纹石、自然铜等。根据化学成分和矿物成分分类，亳县陨石属于

或

群。

Abstract

A procedure is given for the determination by RNAA of rare earth elements in meteorite. REE group is separated from interfering activities by solvent extraction with TOPO-cyclohexane followed by one fluoride-hydroxide pricipitation cycle. The chemical yield of the separation is finally measured after reirradiation of the REE separates. Gamma-spectra are measured using a SCORPIO-3000 multichannel analyser system. Spectrum analysis is performed by a SAPL computer program. The 84.3keV

ray of

170

Tm is resolved from the 86.8keV

ray of

160

Tb by the program. The precision of the method is better than 10%.

According to the REE concentration in the whole rock and chondrite

the chemical fractionation in Boxian meteorite is not appreciable.

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Keywords

references

G. M. Kaleson , Meteoritics , 35 , 59 （ 1976 ）.

A. O. Brunfelt et al ., Radiochem , Radioanal. Lett ., 29 , 181 （ 1977 ）.

Z. Rauda , ibid , 24 , 177 （ 1976 ）.

G. M. Kolesov , J . Radioanal. Chem ., 30 , 553 （ 1976 ）.

P. Rey et al ., Anal. Chim. Acta , 51 , 163 （ 1970 ）.

S. Meloni et al ., Radioanal. Chem ., 71 , 429 （ 1982 ）.

H. Higuchi et al ., ibid , 5 , 207 （ 1970 ）.

A. O. Brunfelt et al ., Analyst , 99 , 277 （ 1974 ）.

王德安，能谱处理方法和程序（中国科学院原子能所资料）。

核素图编制组，核素图，原子能出版社， 1976 年。

Brian Mason , Handbook of elemental abundances in meteorite , 1971 .

R. A. Schmitt et al ., Origin and distribution of the elements , Pergamn Press , 1968 , p. 273 .

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