کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4433737 1619958 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Beyond low-level activity: On a “non-radioactive” gas mantle
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Beyond low-level activity: On a “non-radioactive” gas mantle
چکیده انگلیسی

Gas mantles for camping gas lanterns sometimes contain thorium compounds. During the last years, the use of thorium-free gas mantles has become more and more popular due to the avoidance of a radioactive heavy metal. We investigated a gas mantle type that is declared to be “non-radioactive” and that can be bought in Austria at the moment. Methods used were Instrumental Neutron Activation Analysis (INAA), γ-spectroscopy, and Liquid Scintillation Counting (LSC). We found massive thorium contents of up to 259 mg per gas mantle. Leaching experiments showed that only 0.4% of the Th but approximately 90% of the decay products of 232Th can be leached under conditions simulating sucking and chewing with human saliva. In this paper, the investigation of these gas mantles including the consideration of the environmental hazard caused by disposed mantles and the health hazard for unsuspecting consumers is presented and legal consequences are discussed for this fraud.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volume 374, Issue 1, 1 March 2007, Pages 36–42
نویسندگان
, , , , ,