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The Determination of222Rn in Drilling Fluids of the KTB Pilot Borehole Using SSNTD Techniques

 

作者: C.-D. Zhao,   G. Haase,   M. Heck,   M. Tufail,   P. Vater,   H. A. Khan,   R. Brandt,   J. Erzinger,  

 

期刊: Isotopenpraxis Isotopes in Environmental and Health Studies  （Taylor Available online 1991）
卷期: Volume 27, issue 6  

页码: 296-299

 

ISSN:0021-1915

 

年代: 1991

 

DOI:10.1080/10256019108622546

 

出版商: Taylor & Francis Group

 

关键词: alpha detection;boreholes;dielectric track detectors;natural radioactivity;quantitative chemical analysis;radioactivity;radon 222;rock drilling

 

数据来源: Taylor

 

摘要:

222Rn dissolved in drilling fluids of the KTB (Kontinentales Tiefbohrprogramm der Bundesrepublik Deutschland) pilot hole has been determined using solid state nuclear track detector (SSNTD) technique:The α-sensitive SSNTD CR-39 was used to measure the a-activity of222Rn. Well-defined conditions for Rn-measurements could be established by employing a mica nuclear track microfilter to separate the detector containing air volume from the volume containing the water. This technique has been applied to determine quantitatively the222Rn-concentration as a function of depth of the borehole down to 4000 m.

 

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