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Preliminary study of Be-10/Be-7 in rainwater from Xi'an by Accelerator Mass Spectrometry
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release time:2017-03-27 source: browse:

Title

Preliminary study of Be-10/Be-7 in rainwater from Xi'an by Accelerator Mass Spectrometry

Authors

Zhang, L; Fu, YC

Abstract

The Be10/Be7 ratio is a sensitive tracer for the study of atmospheric transport, particularly with regard to stratosphere-troposphere exchange. Measurements with high accuracy and efficiency are crucial to Be7 and Be10 tracer studies. This article describes sample preparation procedures and analytical benchmarks for Be7 and Be10 measurements at the Xi'an Accelerator Mass Spectrometry (Xi'an-AMS) laboratory for the study of rainwater samples. We describe a sample preparation procedure to fabricate beryllium oxide (BeO) AMS targets that includes co-precipitation, anion exchange column separation and purification. We then provide details for the AMS measurement of Be7 and Be10 following the sequence BeO-> Be2+> Be4+ in the Xi'an- AMS. The Be10/Be7 ratio of rainwater collected in Xi'an is shown to be about 1.3 at the time of rainfall. The virtue of the method described here is that both Be7 and Be10 are measured in the same sample, and it is suitable for routine analysis of large numbers of rainwater samples by AMS.

Corresponding author

Fu Yunchong

Volume

41

Issue

1

Page

18201

Pub year

2017

Publication name

CHINESE PHYSICS C

Details

http://iopscience.iop.org/article/10.1088/1674-1137/41/1/018201/meta;jsessionid=A904D99B45BEDCFF6C625D02F4D64AE5.c1.iopscience.cld.iop.org

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