{"id":1561,"date":"2022-03-16T07:24:09","date_gmt":"2022-03-16T07:24:09","guid":{"rendered":"https:\/\/andrea-koschinsky.org\/?page_id=1561"},"modified":"2025-02-05T21:26:09","modified_gmt":"2025-02-05T21:26:09","slug":"ignacio-pedre","status":"publish","type":"page","link":"https:\/\/andrea-koschinsky.org\/pt\/group-members\/ignacio-pedre\/","title":{"rendered":"Dr. Ignacio Pedre"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><em>Former Humboldt Research Fellow and current Hanse-Wissenschaftskolleg Fellow at Constructor University Bremen and Institute&nbsp;for Chemistry and Biology of the Marine Environment (ICBM) at Carl von Ossietzky University Oldenburg<\/em>.<\/p>\n\n\n<div class=\"wp-block-image is-resized\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"684\" src=\"https:\/\/andrea-koschinsky.org\/wp-content\/uploads\/2022\/03\/Ignacio_WGWebsite-1024x684.jpg\" alt=\"\" class=\"wp-image-1563\" srcset=\"https:\/\/andrea-koschinsky.org\/wp-content\/uploads\/2022\/03\/Ignacio_WGWebsite-1024x684.jpg 1024w, https:\/\/andrea-koschinsky.org\/wp-content\/uploads\/2022\/03\/Ignacio_WGWebsite-300x200.jpg 300w, https:\/\/andrea-koschinsky.org\/wp-content\/uploads\/2022\/03\/Ignacio_WGWebsite-768x513.jpg 768w, https:\/\/andrea-koschinsky.org\/wp-content\/uploads\/2022\/03\/Ignacio_WGWebsite.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Dr. Ignacio Pedre onboard RV SONNE during SONNE expedition SO289<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>Research interests<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trace metals in marine ecosystems<\/li>\n\n\n\n<li>Development of analytical methods for environmental samples<\/li>\n\n\n\n<li>Development of simple and affordable optical and electrochemical sensing systems<\/li>\n\n\n\n<li>Environmental Chemistry in general<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Research project:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">My academic background is strongly oriented to Environmental Analytical Chemistry. In my current project at the Ocean Lab at&nbsp;Constructor University Bremen&nbsp;and at the ICBM at the Carl von Ossietzky Universit\u00e4t Oldenburg, I am working on the development of&nbsp;analytical methodologies&nbsp;for the quantification of manganese in the marine and related environments<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Manganese (Mn) is the 11<sup>th<\/sup>&nbsp;element in abundance in the earth\u00b4s crust and an important element in marine sediments. It is a trace metal in the ocean and an essential trace nutrient and it is involved in the process of mineralization of organic matter. For all these reasons, manganese plays a key role in marine biogeochemical cycles, and assessing the concentration and speciation of this element is an essential issue to understand redox reaction-transport processes in sedimentary deposits.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Although instrumental techniques with excellent analytical performance are available for its quantification, these have the major drawback of requiring expensive instrumentation and consumables, as well as highly qualified personnel. Besides, these methods do not allow for measurements to be performed in the field.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Considering all these&nbsp;aspects, rapid, cost-effective, field-based methods for&nbsp;the quantification&nbsp;and speciationof Mn in pore waters will allow for direct monitoring on-site as well as for the assessment at substantially higher spatial and temporal resolution than would be possible using traditional methods. To achieve this goal, I developed sensing strips based on the immobilization of a colorimetric reagent&nbsp;for Mn.<s>&nbsp;<\/s>Upon contact with the sample, a chemical reaction between the specific reagent and the analyte takes place, which is evidenced by a colour change. The intensity of this change is quantified and related to the concentration of Mn in the sample&nbsp;with an in-house built colour sensor or&nbsp;by analysis of digital images of the sensors taken with a common smartphone.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Another approach is a photochemical reaction between manganese and tyrosine. Upon irradiation of the aminoacid, a fluorescent product is formed, whereby this reaction is enhanced by the presence of the analyte. Therefore, the fluorescence of the system can be correlated to the content in Mn in the sample.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To prove the applicability of the&nbsp;methods&nbsp;to real samples,&nbsp;I carry out&nbsp;rigorous study of the effect of potential interferents<s>.&nbsp;<\/s>Also,&nbsp;I test&nbsp;the sensors&nbsp;<s>are tested&nbsp;<\/s>on natural samples collected by Dr Koschinsky\u00b4s group (for example, on the M192 and SO301 cruises, where I had the opportunity to participate) and on porewater samples collected in the north beach of the Island of Spiekeroog in the frame of the DynaDeep project (DFG). The results are compared to the ones obtained using traditional spectroscopic techniques (ICP).<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-prof-dr-andrea-koschinsky wp-block-embed-prof-dr-andrea-koschinsky\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"2UKFpGcCgI\"><a href=\"https:\/\/andrea-koschinsky.org\/pt\/research-projects\/m192-bridgehell\/\">M192 &#8211; BridgeHell<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;M192 &#8211; BridgeHell&#8221; &#8212; Prof. Dr. Andrea Koschinsky\" src=\"https:\/\/andrea-koschinsky.org\/research-projects\/m192-bridgehell\/embed\/#?secret=jMDXQFWEWg#?secret=2UKFpGcCgI\" data-secret=\"2UKFpGcCgI\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Publications <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pedre, I., Fr\u00f6hberg, N.<\/strong>, Waska, H., <strong>Koschinsky, A.<\/strong>, &amp; Pahnke, K. (2024). Simple and affordable colorimetric sensing strips for quantitative determination of total manganese in porewater samples.\u00a0<em>Limnology and Oceanography: Methods<\/em>. <a href=\"https:\/\/doi.org\/10.1002\/lom3.10615\">https:\/\/doi.org\/10.1002\/lom3.10615<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pedre, I.*<\/strong>, Gonz\u00e1lez, G. A. (2022).\u00a0\u00a0Silver nanoparticles-based sensing platform for Fe<sup>3+<\/sup>\u00a0ions in complex matrices.\u00a0<em>Minerals Engineering 185 (2022) 107712.<\/em>\u00a0<a href=\"https:\/\/doi.org\/10.1016\/j.mineng.2022.107712\">https:\/\/doi.org\/10.1016\/j.mineng.2022.107712<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pedre, I.*<\/strong>, M\u00e9ndez De Leo, L., Gonz\u00e1lez, G. A. <strong>(2019).<\/strong> Cu<sup>2+<\/sup>-ion sensitive Surface on graphite electrodes. <em>Analytical and Bioanalytical Chemistry<\/em> <em>411(29):7761-7770.<\/em>&nbsp;<a href=\"https:\/\/doi.org\/10.1007\/s00216-019-02142-0\">https:\/\/doi.org\/10.1007\/s00216-019-02142-0<\/a><br><br><strong>Pedre, I.<\/strong>, Battaglini, F., Gonz\u00e1lez, G. A. <strong>(2018)<\/strong>. Disposable electrochemical sensor for rapid determination of ethyl xanthate in the mining industry <em>Electroanalysis 30:2589-2596.<\/em> <a href=\"https:\/\/doi.org\/10.1002\/elan.201800419\">https:\/\/doi.org\/10.1002\/elan.201800419<\/a><br><br><strong>Pedre I.<\/strong>, Cifuentes G., S\u00e1nchez-Loredo M. G., Gonz\u00e1lez G. A. <strong>(2016)<\/strong>. Book chapter&nbsp;<em>T\u00e9cnica de detecci\u00f3n electroqu\u00edmica de tiourea presente en ba\u00f1os de electrorrefiner\u00eda de cobre por medio de sensores conteniendo nanopart\u00edculas de plata<\/em>&nbsp;(Electrochemical determination of thiourea in copper-refinery baths using sensors containing silver nanoparticles) in<em>Nuevos Procesos y Materiales para la Detecci\u00f3n y Eliminaci\u00f3n de Contaminantes en Agua<\/em>&nbsp;(New processes and materials for the detection and elimination of hazardous substances in water). Moura Bernardes, A., Cifuentes Molina, G., Siqueira Rodrigues, M. A. and Rodr\u00edguez, M. A. (eds.)<br><br><strong>Pedre, I.<\/strong>, M\u00e9ndez De Leo, L., S\u00e1nchez-Loredo, M. G., Battaglini, F., Gonz\u00e1lez, G. A. <strong>(2016).<\/strong> Electrochemical sensor for thiourea focused on metallurgical applications of copper. <em>Sensors and Actuators B 232:383-389.<\/em><a href=\"https:\/\/doi.org\/10.1016\/j.snb.2016.03.154\" target=\"_blank\" rel=\"noreferrer noopener\"><em>h<\/em>ttps:\/\/doi.org\/10.1016\/j.snb.2016.03.154<\/a><br><br>Sciscenko I., P<strong>edre I.,<\/strong> Hunt A., Bogo H., Gonz\u00e1lez G. A. <strong>(2016)<\/strong>. Determination of a typical additive in zinc electroplating baths. <em>Microchemical Journal<\/em> <em>127:226-230. <\/em><a href=\"https:\/\/doi.org\/10.1016\/j.microc.2016.03.015\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.1016\/j.microc.2016.03.015<\/a><br><br><strong>Pedre, I.<\/strong>, Battaglini, F., Labrada Delgado, G. J., S\u00e1nchez-Loredo, M. G., Gonz\u00e1lez, G. A. <strong>(2015). <\/strong>Detection of thiourea from electrorefining baths using silver nanoparticles-based sensors. <em>Sensors and Actuators B 211:515-522<\/em>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Former Humboldt Research Fellow and current Hanse-Wissenschaftskolleg Fellow at Constructor University Bremen and Institute&nbsp;for Chemistry and Biology of the Marine Environment (ICBM) at Carl von Ossietzky University Oldenburg. Research interests Research project: My academic background is strongly oriented to Environmental<\/p>","protected":false},"author":4,"featured_media":0,"parent":72,"menu_order":35,"comment_status":"closed","ping_status":"closed","template":"","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_wpcom_ai_launchpad_about_page":false,"_wpcom_ai_launchpad_gallery_page":false,"_wpcom_ai_launchpad_contact_page":false,"_wpcom_ai_launchpad_events_page":false,"_wpcom_ai_launchpad_video_page":false,"_wpcom_ai_launchpad_portfolio_piece":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"footnotes":""},"class_list":["post-1561","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/pages\/1561","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/comments?post=1561"}],"version-history":[{"count":9,"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/pages\/1561\/revisions"}],"predecessor-version":[{"id":2439,"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/pages\/1561\/revisions\/2439"}],"up":[{"embeddable":true,"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/pages\/72"}],"wp:attachment":[{"href":"https:\/\/andrea-koschinsky.org\/pt\/wp-json\/wp\/v2\/media?parent=1561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}