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Desenvolvimento de um método para preparar amostras de material de planta para a determinação de Ca, Cu, Mg, Mn, Fe e Zn por FAAS. Repository: BDPA Publication year: 2020
Determinação dos teores de Cu, Fe, Mn e Zn por FAAS em raízes de mandioca (Manihot esculenta Crantz) da Amazônia Oriental. O objetivo deste estudo foi determinar a quantidade de micronutrientes Fe, Zn, Mn e Cu de nove amostras de raízes de mandioca por espectrometria de absorção atômica com chama (FAAS) utilizando ferrame... ... Repository: BDPA Publication year: 2017
H NMR, FAAS, portable NIR, benchtop NIR, and ATR-FTIR-MIR spectroscopies for characterizing and discriminating new Brazilian Canephora coffees in a multi-block analysis perspective. Different analytical techniques, mixing single and multi-block chemometric analyses in supervised and unsu- pervised approaches, and the selection of variables in the coffee discrimination domain have... ... Repository: BDPA Publication year: 2023
Desenvolvimento de métodos de pré-concentração para a determinação de elementos traço e especiação de cromo e arsênio em amostras agrícolas. A produção agrícola sustentável é indispensável para atendimento da demanda crescente por alimentos, sendo essencial o controle nutricional e a avaliação dos riscos associados à contaminação por eleme... ... Repository: BDPA Publication year: 2021
Estratégias analíticas para determinação de contaminantes em fertilizantes. Fertilizantes são insumos agrícolas frequentemente usados para fornecer ao solo os nutrientes necessários para que o crescimento e desenvolvimento das plantas. Além de macronutrientes e micronutriente... ... Repository: BDPA Publication year: 2018
Effects of germination and debranning on amino acid profile of different rice genotypes. In this work, the impact of germination and debranning on the total (TAA) and free (FAA) amino acid in four rice cultivars were evaluated. The rice genotypes were germinated, polished and analyzed by... ... Repository: BDPA Publication year: 2022
Use of short germination and autoclaving treatment to improve the amino acid profile of rice. Rice (Oryza spp.) is one of the most widely consumed cereal in the world. Germination and parboiling are processes used to affect the technological, sensory and nutritional quality of rice. The aim of... ... Repository: BDPA Publication year: 2024
Laser-induced breakdown spectroscopy applied to the quantification of K, Ca, Mg and Mn nutrients in organo-mineral, mineral P fertilizers and rock fertilizers. A low-cost laser-induced breakdown spectroscopy (LIBS) instrument equipped with a charge-coupled device (CCD) was tested in the atmospheric environment for the quantification of K, Ca, Mg, and Mn in s... ... Repository: BDPA Publication year: 2024
Zinc fractionation in cow, goat, sheep and soybean milk samples using gel-electrophoresis and determination by electrothermal atomic absorption spectrometry (ETAAS). A screening method for zinc levels in different milk samples (raw cow, raw sheep, UHT cow, UHT goat and soybean milk base) was performed to establish the Zn levels' differences in protein samples. The... ... Repository: BDPA Publication year: 2021
Chromium speciation in organic fertilizer by cloud point extraction and optimization through experimental Doehlert design as support for legislative aspects. Brazilian and EU legislation establishes 2 mg kg?1 as the maximum limit of Cr(VI) in organic fertilizers. A procedure involving chromium speciation was developed. With this approach, the interference... ... Repository: BDPA Publication year: 2021

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