{"id":50,"date":"2024-04-04T00:41:49","date_gmt":"2024-04-03T21:41:49","guid":{"rendered":"https:\/\/sisu.ut.ee\/katsekoda1\/radioactivity-analyses\/"},"modified":"2025-05-07T11:12:23","modified_gmt":"2025-05-07T08:12:23","slug":"radioactivity-analyses","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/katsekoda1\/radioactivity-analyses\/?lang=en","title":{"rendered":"Laboratory of Nuclear Spectroscopy"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For more information: laboratory contact details on our\u00a0<a href=\"https:\/\/sisu.ut.ee\/katsekoda1\/kontakt\/?lang=en\"><strong>contacts page<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Determination of indicative dose of water samples with an accredited measurement procedure\u00a0<strong>\u201cGammaspectromterical Measurement of the Activity Concentrations of Radium Isotopes in Water\u201d<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The requirement to analyse radiological parameters in drinking water is laid down by the regulation \u201cQuality and monitoring standards and methods of analysis for drinking water\u201d of the Estonian Minister of Social Affairs. It includes the determination of the indicative dose, which is defined as the committed effective dose from ingestion of radionuclides (e<i>xcluding tritium, potassium-40 and radon<\/i>) in water (parametric value 0.10 mSv\/year). In Estonia, the most significant dose contributors are radium isotopes Ra-226 and Ra-228.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We offer an accredited measurement of the activity concentration of radium isotopes Ra-226 and Ra-228 in water. Indicative dose is calculated based on the activity concentrations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Please note that due to the specifics of the measurement methodology, the analysis takes two months. When bringing samples to the laboratory, please include the following information: contact details of the customer (telephone number, e-mail), name of the sampling point, date of sampling.<\/p>\n\n\n\n<figure class=\"wp-block-table has-small-font-size\"><table class=\"table table-hover\"><tbody><tr><td>Limit of detection (MDA \u2013 minimum detectable activity)<\/td><td>Measurement capability<\/td><\/tr><tr><td>MDA(<sup>226<\/sup>Ra) = 20 mBq\/kg<\/td><td>U<sub>rel<\/sub>(<sup>226<\/sup>Ra) = 25%, k=2<\/td><\/tr><tr><td>MDA(<sup>228<\/sup>Ra) = 20 mBq\/kg<\/td><td>U<sub>rel<\/sub>(<sup>228<\/sup>Ra) = 17%, k=2<\/td><\/tr><tr><td>MDA(<sup>224<\/sup>Ra) = 30 mBq\/kg<\/td><td>U<sub>rel<\/sub>(<sup>224<\/sup>Ra) = 10%, k=2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gammaspectrometric analysis of solid sample (not accredited)<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We perform gammaspectrometrical analysis of solids to determine activities and activity concentrations of different radionuclides. For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>artificial radionuclides \u2013 \u00a0137Cs, 134Cs, 60Co, 241Am;<\/li>\n\n\n\n<li>naturally occurring radionuclides \u2013 40K and nuclides from 238U and 232Th decay series.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">We offer the calculation of the activity concentration index for construction materials and products.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Please note that due to the specifics of the measurement methodology, the analysis takes two months. When bringing samples to the laboratory, please include the following information: contact details of the customer (telephone number, e-mail), name of the sampling point, date of sampling.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>For more information: laboratory contact details on our\u00a0contacts page. Determination of indicative dose of water samples with an accredited measurement procedure\u00a0\u201cGammaspectromterical Measurement of the Activity Concentrations of Radium Isotopes in Water\u201d The requirement to analyse radiological parameters in drinking water &#8230;<\/p>\n","protected":false},"author":61,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-50","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/sisu.ut.ee\/katsekoda1\/wp-json\/wp\/v2\/pages\/50","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sisu.ut.ee\/katsekoda1\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sisu.ut.ee\/katsekoda1\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/katsekoda1\/wp-json\/wp\/v2\/users\/61"}],"replies":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/katsekoda1\/wp-json\/wp\/v2\/comments?post=50"}],"version-history":[{"count":6,"href":"https:\/\/sisu.ut.ee\/katsekoda1\/wp-json\/wp\/v2\/pages\/50\/revisions"}],"predecessor-version":[{"id":999,"href":"https:\/\/sisu.ut.ee\/katsekoda1\/wp-json\/wp\/v2\/pages\/50\/revisions\/999"}],"wp:attachment":[{"href":"https:\/\/sisu.ut.ee\/katsekoda1\/wp-json\/wp\/v2\/media?parent=50"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}