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/Be⁷ratio 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 Be⁷and Be¹⁰tracer studies. This article describes sample preparation procedures and analytical benchmarks for Be⁷and Be¹⁰measurements 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 Be⁷and Be¹⁰following the sequence BeO^-> Be²⁺> Be⁴⁺in the Xi'an- AMS. The Be¹⁰/Be⁷ratio 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 Be⁷and Be¹⁰are 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