{"id":408,"date":"2023-05-10T11:48:00","date_gmt":"2023-05-10T09:48:00","guid":{"rendered":"https:\/\/ceza.de\/?p=408"},"modified":"2024-04-09T11:43:06","modified_gmt":"2024-04-09T09:43:06","slug":"14c-is-the-solution","status":"publish","type":"post","link":"https:\/\/ceza.de\/english\/14c-is-the-solution-408","title":{"rendered":"\u00b9\u2074C is the solution"},"content":{"rendered":"\n<p>The element carbon occurs in three different isotopes. While <sup>12<\/sup>C and <sup>13<\/sup>C are stable, <sup>14<\/sup>C decays at a known rate and can therefore be used for age determination. The decay rate of <sup>14<\/sup>C is known and as soon as material containing carbon (e.g. by harvesting a plant or killing an animal) is cut off from carbon exchange with the environment, the amount of the carbon isotope <sup>14<\/sup>C continuously decreases. After 5,730 years, exactly half of <sup>14<\/sup>C is present in the sample material, after another 5,730 years a quarter, and so on. This makes it possible to determine the age up to about 50,000 years before today.<\/p>\n\n\n\n<p>Any material that contains <sup>14<\/sup>C can be dated, from plants, wood, charcoal, bones, skin and hair, to products such as paper, cloth, leather or canvas. The same is true for carbonates such as shells, stalactites or carbonates in groundwater, oceans, rivers or lakes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sustainability and the circular economy are the major future issues of our time<\/h2>\n\n\n\n<p>Methods used in archaeometry can also be used to investigate biologically based materials. The main question here is not about age, but about the type of carbon source from which, for example, a fuel, oil or plastic was produced &#8211; biogenic or petrochemical (from natural gas or petroleum). These products or materials may be made from petrochemical or natural feedstocks or a mixture thereof, and can be determined using <sup>14<\/sup>C analysis.<\/p>\n\n\n\n<p>Products are called &#8220;biogenic&#8221; if their feedstocks come from natural or renewable sources, such as vegetable oils and bio-methanol. Pure petrochemical material, due to its age (the age of the petroleum from which the feedstock is derived of several million years), has carbon that does not contain <sup>14<\/sup>C and has the <sup>14<\/sup>C carbon signature of the corresponding year of growth of the corresponding plant.<\/p>\n\n\n\n<p class=\"text-white bg-ceza-400 has-text-color has-background\">Analyses in CEZA&#8217;s <sup>14<\/sup>C laboratory can reveal these insights, and are performed according to standard test procedures ASTM-D6866 and EN-16640 respectively.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Radiocarbon (<sup>14<\/sup>C) dating is a universally applicable dating method in archaeology as well as in geosciences, biosciences or environmental sciences, as well as in climate and solar research. Especially for organic materials, <sup>14<\/sup>C dating is a universal and precise method for age determination.<\/p>\n","protected":false},"author":1,"featured_media":381,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[1],"tags":[3,8,19],"class_list":["post-408","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-allgemein","tag-14c","tag-datierung","tag-radiokohlenstoff"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00b9\u2074C is the solution - CEZA EN<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ceza.de\/english\/14c-is-the-solution-408\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00b9\u2074C is the solution - CEZA EN\" \/>\n<meta property=\"og:description\" content=\"Radiocarbon (14C) dating is a universally applicable dating method in archaeology as well as in geosciences, biosciences or environmental sciences, as well as in climate and solar research. 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