{"id":11632,"date":"2022-12-14T14:20:55","date_gmt":"2022-12-14T13:20:55","guid":{"rendered":"https:\/\/www.cerege.fr\/?page_id=11632"},"modified":"2023-01-09T21:12:26","modified_gmt":"2023-01-09T20:12:26","slug":"services-du-laboratoire-lpm","status":"publish","type":"page","link":"https:\/\/www.cerege.fr\/en\/equipements\/poles-techniques\/preparation-micropaleontologique\/services-du-laboratoire-lpm\/","title":{"rendered":"LPM Laboratory Services"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"11632\" class=\"elementor elementor-11632\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6f13fad2 elementor-section-full_width elementor-section-height-min-height elementor-section-height-default elementor-section-items-middle\" data-id=\"6f13fad2\" data-element_type=\"section\" data-e-type=\"section\" 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data-id=\"781c4ea\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-02a8a36 elementor-widget elementor-widget-text-editor\" data-id=\"02a8a36\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Bio-indicateurs &#8211; Extraction simple =&gt; analyse microscopique<\/strong><\/p><p>Les diff\u00e9rents bio-indicateurs sont extraits et concentr\u00e9s par\u00a0: <br \/>. une s\u00e9rie d\u2019extractions chimiques s\u00e9lectives consistant \u00e0 enlever les constituants pouvant g\u00eaner l\u2019observation ou l\u2019analyse. <br \/>. par tamisage et ou filtration.<\/p><p>Le r\u00e9sidu obtenu apr\u00e8s extraction est ensuite\u00a0:<br \/>. mont\u00e9 entre lames et lamelles\u00a0 (pollen, diatom\u00e9es, radiolaires, phytolithes et coccolithes)<br \/>. \u00ab piqu\u00e9 \u00bb manuellement sous st\u00e9r\u00e9omicroscope (foraminif\u00e8res) <br \/>. \u00ab piqu\u00e9\u00a0 automatiquement \u00bb par un robot \u2013 LIEN MISO- (foraminif\u00e8res)<\/p><p>Les lames sont analys\u00e9es par\u00a0:<br \/>. Analyse microscopique manuelle par un sp\u00e9cialiste (diatom\u00e9es, pollen, phytolithes), <br \/>. Analyse microscopique automatis\u00e9e (LIEN -PF Microtomate) des foraminif\u00e8res, coccolithes, radiolaires.<\/p><p><strong><br \/>Bio-indicateurs &#8211; Extraction Haute Puret\u00e9 =&gt; analyse g\u00e9ochimique (\u03b418O, \u03b4 17O, \u03b413C)<\/strong><\/p><p>L\u2019obtention de concentr\u00e9s haute puret\u00e9 est un pr\u00e9alable aux analyses g\u00e9ochimiques de certains bio-indicateurs (foraminif\u00e8res, coccolithes, diatom\u00e9es et phytolithes). Pour cela, les \u00e9tapes d\u2019extraction chimique sont multipli\u00e9es et diversifi\u00e9es \u00e0 temp\u00e9rature contr\u00f4l\u00e9e. La puret\u00e9 des concentr\u00e9s est v\u00e9rifi\u00e9e par MEB-EDS. Les analyses sont r\u00e9alis\u00e9es par (LIEN Laboratoire des isotopes stables (PANISS) par ICP-AES, ICP-MS, IRMS, nanoSIMS, 14C-AMS.<\/p><p><strong>Indicateurs anthropiques \u2013 extraction des microplastiques<\/strong><br \/>Dans le cadre des stages de M1 et M2 contacter L.Vidal (vidal@cerege.fr)<\/p><p><strong>La Collection de r\u00e9f\u00e9rence des pollens des plantes modernes pour L\u2019\u00c9thiopie et l\u2019Afrique de l\u2019Est<\/strong> (7000 esp\u00e8ces)<\/p><p>Collection initi\u00e9e par <strong>Raymonde BONNEFILLE<\/strong> pour l&#8217;Afrique de l&#8217;Est avec la collaboration technique de Guy RIOLLET et No\u00eblle BUCHET, compl\u00e9t\u00e9e par <strong>Annie VINCENS<\/strong> pour l&#8217;Afrique de l&#8217;Est, Anne-Marie LEZINE pour le S\u00e9n\u00e9gal; Th\u00e9r\u00e8se EDORH pour le Togo; Hilaire ELENGA pour le Congo au Laboratoire de G\u00e9ologie du Quaternaire mais aussi gr\u00e2ce \u00e0 de nombreux \u00e9changes.<\/p><p>Cette collection initi\u00e9e dans les ann\u00e9es 80 est le fruit de 40 ans de travail au travers de missions sur le terrain, d\u2019\u00e9chantillonnage de plantes ou dans des herbiers. Au total 7000 esp\u00e8ces sont r\u00e9pertori\u00e9es et illustr\u00e9es.<\/p><p>Elle consiste en\u00a0:<br \/>. Des lames de r\u00e9f\u00e9rences <br \/>. Des culots de pollen frais<br \/>. Des \u00e9chantillons botaniques<\/p><p>Pour acc\u00e9der \u00e0 la collection, contacter C. Paill\u00e8s<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Bio-indicateurs &#8211; Extraction simple =&gt; analyse microscopique Les diff\u00e9rents bio-indicateurs sont extraits et concentr\u00e9s par\u00a0: . une s\u00e9rie d\u2019extractions chimiques s\u00e9lectives consistant \u00e0 enlever les constituants pouvant g\u00eaner l\u2019observation ou [&hellip;]<\/p>\n","protected":false},"author":551,"featured_media":13868,"parent":9364,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-11632","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"publishpress_future_action":{"enabled":false,"date":"2026-05-16 07:53:38","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages\/11632","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/users\/551"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/comments?post=11632"}],"version-history":[{"count":5,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages\/11632\/revisions"}],"predecessor-version":[{"id":13739,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages\/11632\/revisions\/13739"}],"up":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/pages\/9364"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/media\/13868"}],"wp:attachment":[{"href":"https:\/\/www.cerege.fr\/en\/wp-json\/wp\/v2\/media?parent=11632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}