https://repositorio.ufu.br/handle/123456789/21773 2026-09-01T00:42:39Z https://repositorio.ufu.br/handle/123456789/49611 Title: A Físico-Química na licenciatura em Química: currículo, formação e práticas docentes em análise Abstract: This study aimed to understand how the syllabi of Physical Chemistry courses were constructed in three Chemistry Teacher Education programs, as well as to analyze the perceptions of faculty members and pre-service Chemistry teachers regarding the impact of these courses on teacher education. To this end, documents governing Chemistry teacher education programs and the Physical Chemistry syllabi of three courses were analyzed using the methodology proposed by Lima and Mioto (2007). Semi-structured interviews were also conducted with three faculty members and three pre-service Chemistry teachers. Interview data were analyzed using content analysis as proposed by Bardin (2016). The categories for analysis were: 1) the construction of syllabi by faculty members; 2) the articulation of these syllabi with Basic Education; 3) pre-service teachers' perceptions of the relationship between higher education content and Basic Education; 4) the possibility of teaching Physical Chemistry concepts in Basic Education. The findings indicate that official documents do not specify in detail the content that should be included in Physical Chemistry syllabi and that, although the syllabi cover the content prescribed for Basic Education, there is no effective articulation between what is taught in higher education and what is required for teaching in schools. According to the faculty members interviewed, this is related to the fact that the syllabi of teacher education programs frequently replicate the structure of bachelor's degree programs, with an emphasis on mathematical calculations and little attention to the specificities of the school context. Pre-service teachers, in turn, reported not feeling prepared to teach such content. These results point to the need to reconsider the curricular organization of Physical Chemistry courses in Chemistry teacher education programs, so that initial teacher education is genuinely aligned with the demands of teaching practice in schools. 2026-03-27T00:00:00Z https://repositorio.ufu.br/handle/123456789/49031 Title: Determinação voltamétrica de ácido salicílico em amostras de leite com um eletrodo de fio de cobre Abstract: Salicylic acid (SA) is widely used in the dermatological and pharmaceutical industries due to its antiseptic, anti-inflammatory, and exfoliating properties; however, its use as a food additive is not permitted. Despite this prohibition, cases of milk adulteration with SA are frequently reported in several countries. Besides compromising the quality of milk and dairy products, this adulteration represents a serious health risk to consumers, demonstrating the relevance of efficient analytical methods for the quantification of SA in complex matrices such as milk. This work presents an environmentally friendly voltammetric method for the determination of SA in milk, using a working electrode made of commercial copper wires, subsequently subjected to a chemical modification in an alkaline medium to form a CuO-rich layer that protects against electrode fooling and improves the electrochemical response of SA. The technique employed was Differential pulse voltammetry, which, after parameter optimization, yielded a linear range of 10 to 500 µmol L⁻¹ and a detection limit of 3.0 µmol L⁻¹. Another highlight is the sample treatment using only ZnSO₄ and NaOH, the former precipitates milk proteins, while the latter ionizes the SA, facilitating its extraction and subsequent detection. This procedure reduces reagent and sample consumption, eliminates organic solvents, and allows for rapid pre-treatment of multiple samples simultaneously. In the spike-and-recovery study for fortified samples, the recovery percentages of AS ranged from 91 to 107%, with RSD values from 2.1 to 5.3%, results consistent with the AOAC guidelines for evaluating the performance of analytical methods. Therefore, this work offers a low-cost procedure, more sustainable than the established method for determining AS in food, and with satisfactory analytical performance, representing a promising strategy for the quantification of AS in milk samples. 2026-03-13T00:00:00Z https://repositorio.ufu.br/handle/123456789/46842 Title: O novo ensino médio e a base nacional comum curricular no ensino de química: revisão bibliográfica dos anais do ENEQ (2023 e 2024) Abstract: Esta monografía tiene como objetivo identificar los trabajos publicados en las actas de las dos últimas ediciones del Encuentro Nacional de Enseñanza de la Química (ENEQ) (2023 y 2024), en lo que respecta a la temática del Nuevo Bachillerato (NEM) y de la Base Nacional Común Curricular (BNCC). Dicho evento constituye el encuentro científico más importante en el área de la Enseñanza de la Química en Brasil y, por lo tanto, se destaca por promover reflexiones pertinentes a la comunidad académica y escolar involucrada en la Educación Química. Para ello, en un primer momento se desarrolla una revisión documental de los archivos del NEM, de la BNCC y del Currículo de Referencia de Minas Gerais (CRMG). Posteriormente, se realiza una revisión bibliográfica que toma como material dieciocho trabajos que constituyen el corpus de la investigación, los cuales fueron publicados en las actas de la XXI y XXII ediciones del ENEQ (2023 y 2024). Los resultados de la investigación señalan que ha habido un aumento de trabajos publicados en las actas de los ENEQ en relación con la temática del NEM y de la BNCC. Además, que las principales temáticas abordadas son: BNCC y sus desarrollos; Currículos estatales e itinerarios formativos; Enfoques didácticos alternativos y ludicidad; Condiciones de trabajo docente; y Formación docente y prácticas pedagógicas. Por lo tanto, este estudio muestra hasta qué punto el NEM y la BNCC se han convertido en un campo de interés e investigación en lo que respecta a las producciones y estudios en la Enseñanza de la Química. Notes: 100 2025-09-11T00:00:00Z https://repositorio.ufu.br/handle/123456789/46096 Title: Uma análise das percepções dos estudantes sobre a escola de educação básica: resultados de uma pesquisa desenvolvida no âmbito do Programa Residência Pedagógica 2025-04-30T00:00:00Z