{"id":568,"date":"2015-03-03T16:38:04","date_gmt":"2015-03-03T15:38:04","guid":{"rendered":"http:\/\/www.paleurafrica.be\/?page_id=568"},"modified":"2016-10-15T16:41:18","modified_gmt":"2016-10-15T14:41:18","slug":"labo-unamur","status":"publish","type":"page","link":"https:\/\/www.paleurafrica.be\/?page_id=568","title":{"rendered":"<\/span> Labo Namur University"},"content":{"rendered":"

<\/span><\/p>\n
Isotopic analysis performed at the Geology Department of UNamur<\/span><\/h5>\n

Carbon isotope (\u03b413<\/sup>C) variations are used for global correlations of geological sections in which we discover fossils. Isotopic analyses on organic matter require rigorous laboratory preparation for each sample. Each drilled sample is carefully examined to avoid potential contamination, before grinding process. Powders are treated with a 25% hydrochloric acid solution in order to suppress any carbonates (-CO3<\/sub>) content in the rock sample. Afterwards, neutralization of the sediment (pH \u2248 7) is reached by successive distilled water addition and centrifugation processes. Total Organic Carbon content (TOC, %) and Sulfur (S, %) content are measured with a standard carbon analyser LECO. Isotopic analyses are performed on a mass spectrometer. Organic carbon isotopic values are normalized to the international PDB standard (\u03b413<\/sup>Corg<\/sub>).<\/span><\/p>\n

<\/div><\/div>

\"0101 Drilled rock sample<\/span><\/a><\/div>
\"0202 Fossil of gasteropod<\/span><\/a><\/div>
\"0303 Agate grinding jar<\/span><\/a><\/div>
\"0404 Sample weighing<\/span><\/a><\/div>
\"0505 HCl acid decarbonatation<\/span><\/a><\/div>
\"0606 Neutralized sample<\/span><\/a><\/div>
\"0707 Centrifugation by researcher Corentin Noiret<\/span><\/a><\/div>
\"0808 Carbon and Sulfur quantification<\/span><\/a><\/div>
\"0909 Numbered storage jar<\/span><\/a><\/div><\/div>
<\/span><\/span><\/div>
<\/div><\/div><\/div><\/span><\/p>\n

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