22-27 September 2019
Trade Fairs and Congress Center (FYCMA)
Europe/Madrid timezone

Dating groundwater with radio-krypton and radio-argon

26 Sep 2019, 12:30
15m
Conference room 1.A ()

Conference room 1.A

Oral Topic 5 - Tools, methods and models to study groundwater Parallel

Speaker

Dr Guo-Min Yang (University of Science and Technology of China)

Description

The long-lived noble-gas isotope 81Kr, 85Kr, and 39Ar are ideal tracers for environmental samples, and can be analyzed using the Atom Trap Trace Analysis (ATTA) method [1]. 85Kr dating covers the age range of 2 – 50 years; 39Ar covers 50 – 1,400 years; 81Kr covers 40,000 – 1,300,000 years. In order to meet the increasing demands from the earth science community, we have established a new laboratory dedicated to radio-krypton and radio-argon dating. For Kr-dating, the required samples is 1-2 micro-liter STP of Kr gas, which can be extracted from 10-20 kg of water or ice; for 39Ar-dating, the sample size is 1-2 mL STP of argon, corresponding to a few kg of water or ice. We perform dating not only on groundwater but also on glacier ice and seawater. Here, we present both the latest technical development and earth science applications, including ATTA systems, degassing devices for groundwater, purification systems for dual krypton/argon output as well as examples of groundwater studies.

[1] Z.-T. Lu et al., Tracer applications of noble gas radionuclides in the geosciences, Earth-Science Reviews 138, 196-214 (2014)
http://atta.ustc.edu.cn/en-us/events/attaprimer.html or Google “ATTA primer”

Primary authors

Dr Guo-Min Yang (University of Science and Technology of China) Ms Yanqing Chu (University of Science and Technology of China) Mr Xize Dong (University of Science and Technology of China) Mr Chao Gao (University of Science and Technology of China) Mr Jiqiang Gu (University of Science and Technology of China) Prof. Shuiming Hu (University of Science and Technology of China) Mr Siyu Liu (University of Science and Technology of China) Prof. Wei Jiang (University of Science and Technology of China) Prof. Zheng-Tian Lu (University of Science and Technology of China) Dr Florian Ritterbusch (University of Science and Technology of China) Mr Amin Tong (University of Science and Technology of China) Mr Jie Wang (University of Science and Technology of China) Mr Wenhao Wang (University of Science and Technology of China) Mr Jingwen Yan (University of Science and Technology of China) Mr Lei Zhao (University of Science and Technology of China) Ms Zhixia Zhao (University of Science and Technology of China)

Presentation Materials

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