{"id":2678,"date":"2024-11-12T09:06:35","date_gmt":"2024-11-12T09:06:35","guid":{"rendered":"https:\/\/andrea-koschinsky.org\/?page_id=2678"},"modified":"2025-12-01T14:36:48","modified_gmt":"2025-12-01T14:36:48","slug":"probral","status":"publish","type":"page","link":"https:\/\/andrea-koschinsky.org\/pt\/research-projects\/probral\/","title":{"rendered":"PROBRAL"},"content":{"rendered":"

Within the PROBRAL exchange program of DAAD and CAPES, we have a longstanding collaboration with several working groups at brazilian institutions involving exchange of PhD students and PostDocs as well as joint sampling campaigns. Below you find more information about our PROBRAL projects in recent years:<\/p>\n\n\n\n

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2025: Lab Exchange in Brazil: Collaborative Trace Metal Research<\/h2>\n\n\n
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Postdoc Natasha van Horsten<\/a> and PhD candidate Polina Tselykh<\/a> from the marine geochemistry research group of Prof. Andrea Koschinsky at Constructor University are taking part in a laboratory exchange at the Federal University of Santa Maria (UFSM) in Brazil at Lachem laboratory with Prof. Leandro Machado de Carvalho. The research stay is funded by DAAD within the PROBRAL project and aims to strengthen German\u2013Brazilian collaboration in cutting-edge marine trace-metal analysis. Natasha and Polina are introduced to the university and Brazilian culture by UFSM postdoc Thais, who may visit the geochemistry lab at Constructor University in the nearest future to learn the methods applied here and further enrich her scientific work and experience.<\/p>\n<\/div>\n\n\n

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During their visit, Natasha and Polina are working with adsorptive stripping voltammetry, applying it to seawater samples collected during the GEOTRACES expeditions GP21 and GP11 in the Southern and Equatorial Pacific Ocean. Natasha focuses on voltammetric analyses of chromium redox speciation at Constructor University, while Polina specializes in SeaFAST preconcentration and ICP-MS measurements of high-field-strength elements (HFSE).<\/p>\n\n\n\n

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By bringing their Pacific samples to UFSM, they can perform interlaboratory and inter-method comparisons, improving the reliability of their trace-metal measurements. Over the course of the month, they will not only work intensively with their samples in the laboratory but also exchange knowledge, techniques, and ideas with Brazilian researchers and students\u2014strengthening scientific networks.<\/p>\n<\/div>\n\n\n\n\n

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At the same time, PostDoc Christian Krause is visiting our lab in Bremen for 6 months for developing\/improving a voltammetric method for thallium concentrations as well as measure reactive\/total nickel and concentrations of copper, lead, cobalt, and zinc in the samples we collected during last year’s sampling campaign in the mangroves near Braganca in Brazil.<\/p>\n\n\n\n

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2024: Sampling campaign in the mangroves in northern Brazil<\/h2>\n\n\n\n

News posts:<\/h4>\n\n\n\n
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Sampling porewater in the mangroves (PROBRAL)<\/a><\/blockquote>