{"id":875,"date":"2019-07-22T12:49:13","date_gmt":"2019-07-22T15:49:13","guid":{"rendered":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/?page_id=875"},"modified":"2019-10-16T08:18:55","modified_gmt":"2019-10-16T11:18:55","slug":"palestras-2019","status":"publish","type":"page","link":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/palestras-2019","title":{"rendered":"Palestras 2019"},"content":{"rendered":"\n

PALESTRANTE: <\/strong>Ji\u0159\u00ed D\u011bdina
<\/strong><\/p>\n

Institute of Analytical Chemistry of the Czech Academy Sciences, Praga \u2013 Rep\u00fablica Tcheca<\/p>\n

T\u00cdTULO DA PALESTRA: Application of laser techniques for understanding what really happens in flame hydride atomizers
<\/strong><\/p>\n

LOCAL:<\/strong> Audit\u00f3rio do pr\u00e9dio 67 A (CEPETRO)<\/p>\n

LOCAL e HOR\u00c1RIO:<\/strong> 14:00 h, sexta-feira, 18 de outubro de 2019<\/p>\n

\u00a0Hydride generation (HG) is ideally suited for trace and ultratrace element and speciation analysis of hydride forming elements since it involves analyte separation from the sample matrix and its high efficiency transfer from the sample to the spectrometer. HG coupled to the relatively low cost and simple detectors, atomic absorption (AA) or atomic fluorescence (AF) spectrometer, can thus serve as an alternative to the conventional approaches based on the liquid phase sampling inductively coupled plasma mass spectrometry. However, the final step of the whole procedure, hydride atomization, has to be optimized. The best way of doing that is to establish how the relevant operation parameters influence the distribution of hydrogen radicals (H radicals), temperature and analyte free atoms in hydride atomizers. The diffusion flame (DF) is a standard hydride atomizer for AF but it can be very useful also for AA spectrometry. DF provides a very efficient analyte atomization. The other atomizer for AF, flame-in-gas-shield (FIGS), employs a hydrogen-oxygen microflame, burning at the top of a capillary, shielded by Ar flow. Compared to MDF, FIGS is more flexible and it offers better sensitivity and a higher potential in terms of miniaturization. The aim of the presented work was to quantify the distributions of all the three fundamental parameters (H radicals, temperature and analyte free atoms) in MDF and FIGS atomizers under relevant experimental conditions. H radical distribution was determined by two photon absorption laser induced fluorescence (TALIF). TALIF was also employed to derive temperature from the Gauss broadening of two-photon absorption L\u03b2 line. Rayleigh scattering of the laser beam was tested as an additional approach to find temperature distribution. Laser-induced fluorescence (LIF) was used to derive spatial maps of absolute concentrations of analyte free atoms. Pb was employed as an analyte for the preliminary experiments. Pb atom concentration resulting from LIF measurements was reasonably close to that estimated from analyte supply from hydride generator. The quantification of distributions of all the three fundamental parameters yields a complete information required for optimization of both studied atomizers.<\/p>\n\n\n\n\n\n

PALESTRANTE: <\/strong>Doutorando Abdullah Abdulkader<\/p>\n

T\u00cdTULO DA PALESTRA: <\/strong>Reactions of [Tc(NO)(Cp)PPh3)Cl] and related compunds<\/p>\n

DATA: <\/strong>13\/09\/2019<\/p>\n

LOCAL: <\/strong>Audit\u00f3rio B1 (ao lado da Geoci\u00eancias)<\/p>\n

HOR\u00c1RIO: <\/strong>14:30 h<\/p>\n\n\n\n

\n\n\n\n

PALESTRANTE: <\/strong>Prof. Dr. Juliano Alves Bonacin<\/p>\n

INSTITUTO DE QU\u00cdMICA – UNIVERSIDADE ESTADUAL DE CAMPINAS \u2013 UNICAMP<\/strong><\/p>\n

T\u00cdTULO DA PALESTRA: <\/strong>Estado da arte no desenvolvimento de catalisadores para rea\u00e7\u00f5es de oxida\u00e7\u00e3o de \u00e1gua<\/em><\/p>\n

DATA: <\/strong>05\/08\/2019<\/p>\n

LOCAL: <\/strong>SALA 2026 \u2013 SUB-SOLO DO PR\u00c9DIO 18 – QU\u00cdMICA<\/p>\n

HOR\u00c1RIO: <\/strong>14:00 h<\/p>\n

\"\"<\/p>\n

Graduou-se em Qu\u00edmica pela Universidade Estadual de Maring\u00e1 (UEM) em 2002. Concluiu o doutorado e o p\u00f3s-doutorado em Qu\u00edmica Inorg\u00e2nica na Universidade de S\u00e3o Paulo (USP) em 2007 e 2009, respectivamente. De 2009 a 2012 foi diretor de P&D e s\u00f3cio co-fundador da empresa NovaNano. Durante esse per\u00edodo, foi membro de F\u00f3rum de Competitividade em Nanotecnologia do Minist\u00e9rio do Desenvolvimento, Ind\u00fastria e Com\u00e9rcio Exterior (2009\/2010). No mesmo per\u00edodo, desenvolveu uma nova tecnologia para produ\u00e7\u00e3o de nanopart\u00edculas de prata e realizou o processo de transfer\u00eancia tecnol\u00f3gica para outra empresa do setor. Ingressou no IQ-UNICAMP em 2012 e atualmente \u00e9 Professor do n\u00edvel MS-3.2. Coordenou projetos financiados pelo SENAI, CNPq, FINEP e FAPESP. Atualmente, atua como revisor de 27 revistas cient\u00edficas de \u00e2mbito nacional e internacional. Foi Visiting Researcher na University of Ottawa (2012\/2013) e na Manchester Metropolitan University (2017). Possui 36 artigos publicados, \u00edndice H=13 (Google Scholar) e 4 patentes depositadas. Orientou 3 projetos de mestrado, 3 doutorados, 9 projetos de IC, 5 alunos de interc\u00e2mbio. Atualmente orienta 1 projetos de doutorado, 1 mestrado e 5 de Inicia\u00e7\u00e3o Cient\u00edfica. Seu grupo de pesquisa desenvolve projetos em water splitting, estudos de rea\u00e7\u00f5es de evolu\u00e7\u00e3o de oxig\u00eanio (oxida\u00e7\u00e3o de \u00e1gua), nanomateriais para eletrocat\u00e1lise e sensores eletroqu\u00edmicos.<\/p>\n

Website do grupo de pesquisa: www.bonacin.iqm.unicamp.br<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

PALESTRANTE: Ji\u0159\u00ed D\u011bdina Institute of Analytical Chemistry of the Czech Academy Sciences, Praga \u2013 Rep\u00fablica Tcheca T\u00cdTULO DA PALESTRA: Application of laser techniques for understanding what really happens in flame hydride atomizers LOCAL: Audit\u00f3rio do pr\u00e9dio 67 A (CEPETRO) LOCAL e HOR\u00c1RIO: 14:00 h, sexta-feira, 18 de outubro de 2019 \u00a0Hydride generation (HG) is ideally […]<\/p>\n","protected":false},"author":759,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-875","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/pages\/875","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/users\/759"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/comments?post=875"}],"version-history":[{"count":0,"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/pages\/875\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/media?parent=875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/categories?post=875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ufsm.br\/cursos\/pos-graduacao\/santa-maria\/ppgq\/wp-json\/wp\/v2\/tags?post=875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}