{"id":48217,"date":"2026-05-27T08:18:26","date_gmt":"2026-05-27T08:18:26","guid":{"rendered":"https:\/\/www.hgi-cgs.hr\/?page_id=48217"},"modified":"2026-05-27T09:17:58","modified_gmt":"2026-05-27T09:17:58","slug":"doktorandica-iva-palatinus-boravila-na-max-planck-institutu-za-kemiju-u-mainzu-mobdok-2023","status":"publish","type":"page","link":"https:\/\/www.hgi-cgs.hr\/en\/doktorandica-iva-palatinus-boravila-na-max-planck-institutu-za-kemiju-u-mainzu-mobdok-2023\/","title":{"rendered":"Doktorandica Iva Palatinu\u0161 boravila na Max Planck institutu za kemiju u Mainzu (MOBDOK-2023)"},"content":{"rendered":"

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NOVOSTI\u00a0<\/strong><\/h2>\n

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Doktorandica Iva Palatinu\u0161 boravila na Max Planck institutu za kemiju u Mainzu (MOBDOK-2023)<\/h2>\n

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Od listopada 2025. do travnja 2026. asistentica i doktorandica na projektu UNLOCK-CAVE (HRZZ-UIP-2020-02-7355), Iva Palatinu\u0161, boravila je na Max Planck institutu za kemiju (MPIC) u Mainzu radi stru\u010dnog usavr\u0161avanja u metodi masene spektrometrije izotopnih omjera (IRMS, Isotope Ratio Mass Spectrometry). <\/em><\/p>\n

U okviru svog doktorskog istra\u017eivanja asistentica se bavi rekonstrukcijom paleoklimatskih uvjeta tijekom mla\u0111eg holocena kori\u0161tenjem geokemijskih posrednih pokazatelja (proxyja) u sigama iz Nove Grgosove spilje u Hrvatskoj. Analiza omjera stabilnih izotopa kisika (\u03b418<\/sup>O) i ugljika (\u03b413<\/sup>C) predstavlja jednu od temeljnih metoda u ovakvom tipu istra\u017eivanja, zbog \u010dega je masena spektrometrija izotopnih omjera me\u0111u najva\u017enijim i naj\u010de\u0161\u0107e kori\u0161tenim analiti\u010dkim metodama u paleoklimatskim istra\u017eivanjima prirodnih klimatskih arhiva.<\/p>\n

Tijekom \u0161estomjese\u010dnog boravka u vrhunskom laboratoriju Max Planck instituta za kemiju, pod mentorstvom dr. Huberta Vonhofa, jednog od vode\u0107ih stru\u010dnjaka u podru\u010dju izotopne geokemije i paleoklimatologije, Iva je stekla opse\u017ena teorijska i prakti\u010dna znanja o primjeni ove metode. Uz usvajanje teorijskih principa rada instrumenata, savladala je metodologiju pripreme razli\u010ditih tipova uzoraka standardnom i tzv. cold trap<\/em> metodom. Standardna metoda primjenjuje se za analizu pra\u0161kastih uzoraka karbonata mase do 100 \u03bcg. Uzorci se potom tretiraju fosfornom kiselinom, pri \u010demu dolazi do osloba\u0111anja plina CO2<\/sub> koji se potom analizira u masenom spektrometru. Metoda hladne zamke (cold trap<\/em>) primjenjuje se u analizi vrlo malih uzoraka mase 3-10 \u03bcg, poput jedinki foraminifera, kod kojih se u reakciji s kiselinom osloba\u0111a vrlo mala koli\u010dina plina CO2<\/sub>. Zbog toga se plin prije uvo\u0111enja u maseni spektrometar koncentrira teku\u0107im du\u0161ikom, \u0161to omogu\u0107uje njegovu u\u010dinkovitiju detekciju. Za potrebe ovog usavr\u0161avanja kori\u0161teni su uzorci siga iz Nove Grgosove spilje prikupljeni u okviru projekta UNLOCK-CAVE pod vodstvom vi\u0161e znanstvene suradnice i mentorice dr. Bajo, u okviru postoje\u0107e suradnje s dr. Vonhofom.<\/p>\n

Ste\u010dena znanja, prakti\u010dne vje\u0161tine i iskustvo rada na jednoj od najpresti\u017enijih znanstveno-istra\u017eiva\u010dkih institucija u Europi predstavljat \u0107e va\u017ean doprinos uspostavi i razvoju IRMS metode u novom laboratoriju Hrvatskog geolo\u0161kog instituta, opremljenom s dva suvremena masena spektrometra izotopnih omjera, ThermoFisher 253 Plus maseni spektrometar s Kiel IV jedinicom (za automatsku pripremu karbonatnih uzoraka za analizu stabilnih izotopa kisika i ugljika), te ThermoFisher Delta V Plus maseni spektrometar s GasBench periferijom i elementarni analizatorom (EA) (za analizu stabilnih izotopa ugljika i du\u0161ika u organskoj tvari), koji je uspostavljen tijekom 2026. godine u sklopu projekta \u201eObnova infrastrukture i nabava instrumenata u Hrvatskom geolo\u0161kom institutu \u2013 Geoznanstveni laboratoriji (GEOLAB)\u201c, C3.2.R2-I2.04, financiranog izravnom dodjelom bespovratnih sredstava Ministarstva znanosti, obrazovanja i mladih.<\/p>\n

Usavr\u0161avanje na Max Planck institutu za kemiju financirano je sredstvima Hrvatske zaklade za znanost u okviru programa MOBDOK-2023 \u2013 odlazna mobilnost asistenata<\/strong><\/p>\n

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Max Planck institut za kemiju u Mainzu.<\/em><\/p>\n

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Asistentica Iva Palatinu\u0161 tijekom pripreme uzoraka sige iz Nove Grgosove spilje za analizu omjera stabilnih izotopa.<\/em><\/p>\n

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NOVOSTI\u00a0Doktorandica Iva Palatinu\u0161 boravila na Max Planck institutu za kemiju u Mainzu (MOBDOK-2023)Od listopada 2025. do travnja 2026. asistentica i doktorandica na projektu UNLOCK-CAVE (HRZZ-UIP-2020-02-7355), Iva Palatinu\u0161, boravila je na Max Planck institutu za kemiju (MPIC) u Mainzu radi stru\u010dnog usavr\u0161avanja u metodi masene spektrometrije izotopnih omjera (IRMS, Isotope Ratio Mass Spectrometry). U okviru svog […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-48217","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/48217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/comments?post=48217"}],"version-history":[{"count":3,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/48217\/revisions"}],"predecessor-version":[{"id":48223,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/48217\/revisions\/48223"}],"wp:attachment":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/media?parent=48217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}