Flame Photometry
Mostrando 1-12 de 43 artigos, teses e dissertações.
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1. Potassium recovery from Brazilian glauconitic siltstone by hydrothermal treatments
Abstract Silicate rock Verdete, collected in the central region of Minas Gerais state (Brazil) and composed mostly of micas (glauconite and muscovite) and tectosilicates (K-feldspar and quartz), was hydrothermally treated with several reactants in order to release and recover potassium. The hydrothermal products were characterized by flame photometry, XRD, X
REM, Int. Eng. J.. Publicado em: 2020-06
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2. Chloride and sodium ion concentrations in saliva and sweat as a method to diagnose cystic fibrosis
Resumo Objetivo: O diagnóstico da fibrose cística depende do valor da concentração de íons de cloreto no teste do suor (≥ 60 mEq/mL - reconhecido como o indicador-padrão para o diagnóstico da doença). Além disso, as glândulas salivares expressam a proteína RTFC igualmente às glândulas sudoríparas. Nesse contexto, nosso objetivo foi verificar
J. Pediatr. (Rio J.). Publicado em: 12/09/2019
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3. Tipos de leite e sua contribuição na ingestão diária de sódio e cálcio
Resumo O baixo consumo de cálcio e elevado de sódio por adolescentes configura um sério problema de saúde pública. A biodisponibilidade e o teor de cálcio contido no leite fazem dele a melhor opção no atendimento a Ingestão Dietética Recomendada (IDR) desse nutriente. Como o leite pode contribuir para a ingestão de sódio, a realização de progra
Ciênc. saúde coletiva. Publicado em: 05/08/2019
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4. Determinação de metais em água e folha de AECHMEA BLANCHETIANA (BAKER) L.B
The aim of this research was to determine the concentrations of calcium, iron, manganese, zinc, potassium and sodium in the water and leaves of Aechmea blanchetiana (Baker) L.B species collected between the cities of Ilhéus and Itacaré, Bahia, Brazil and verify if the metals found in the water can be absorbed by the leaves. Flame atomic absorption spectrom
Quím. Nova. Publicado em: 2016-05
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5. Minerals consumption by Acetobacter xylinum on cultivation medium on coconut water
The objective of this work is to verifying the consume of the minerals K, Na, Fe, Mg, P, S-SO4-2,B,N Total Kjedahl (NTK), NO3--N, and NH4+-N in the production of bacterial cellulose by Acetobacter xylinum, according to the medium and the manner of cultivation. The fermentative process was in ripe and green coconut water. K and Na were determined by flame emi
Braz. J. Microbiol.. Publicado em: 05/04/2013
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6. Desenvolvimento de métodos alternativos para a determinação dos íons metálicos sódio, potássio, cálcio e magnésio em amostras de biodiesel / Development of alternative methods for the determination of sodium, potassium, calcium and magnesium ions in samples of biodiesel
In this work reports two alternative methods for the quantitation of metallic ions (Na, K, Mg e Ca) in biodiesel samples. The proposed methods were applied to biodiesel that were synthesized from different vegetable oils and also animal fat. The proposed method uses water extraction, heating and ultrasound. The quantitation of the ions was performed using io
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/11/2011
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7. EFFECT OF AQUEOUS FRACTION OF LEAVES DE COSTUS SPIRALIS (JACQ.) ROSCOE CONTRACTILE FUNCTION ON HEART MAMMALS. / EFEITO DA FRAÇÃO AQUOSA DAS FOLHAS DE COSTUS SPIRALIS (JACQ.) ROSCOE SOBRE A FUNÇÃO CONTRÁTIL DO CORAÇÃO DE MAMÍFEROS.
Teas and infusions from C. spiralis leaf have largely been used by folk medicine as diuretic, hypotensor, cytotoxic, immunomodulator, antilithiasic, antidiarrheic, antispasmodic, antiurolitic, antimicrobian, antifungic, antioxidant, antileishmania activity, antiinflamatory, and antiedematogenic activity. In spite of these biological effects attributed to the
Publicado em: 2011
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8. Termogravimetria: um novo enfoque para a clássica determinação de cálcio em cascas de ovos
The use of thermoanalytical data in sample preparation is described as a tool to catch the students' attention to some details that can simplify both the analysis and the analytical procedure. In this case, the thermal decomposition of eggshells was first investigated by thermogravimetry (TGA). Although the classical procedures suggest long exposure to high
Química Nova. Publicado em: 2009
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9. ANÁLISE QUÍMICA DO LIXIVIADO DA ÁGUA DE XISTO EM UM LATOSSOLO VERMELHO ESCURO DISTRÓFICO
Industrial processes generate a series of products, often without applicability becomes waste that contribute to pollution of soil, air and water. Some products may be reused and / or processed into raw materials for other processes. In this context, analyzed the water of oil shale (a byproduct of the process of obtaining the oil shale) using an Instrumental
Publicado em: 2009
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10. The action of red scorpion (Mesobuthus tamulus coconsis, pocock) venom and its isolated protein fractions on blood sodium levels
Red scorpion (Mesobuthus tamulus or Buthus tamulus) venom samples were collected at different regions of India: western (Chiplun and Ahmednagar from Maharashtra State) and southern (Ratnagiri and Chennai from Tamil Nadu State). The action of whole venoms on the blood sodium levels of mice was assessed using flame photometry. Seven peptides were common to all
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2007
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11. Análise de praguicidas organofosforados em água por extração em fase sólida (SPE) utilizando discos C18 e cromatografia em fase gasosa: avaliação da contaminação do reservatório de Furnas (MG-Brasil)
Solid phase extraction (SPE) in C18 disks has been optimized and validated for extraction of 5 organophosphorus (OP) pesticides in water. Extraction has been followed by separation and detection by gas chromatography/flame photometry. Excellent linearity was obtained for all compounds (r greater than 0.99), with CVs between 1.0-6.9%, recoveries between 73-95
Química Nova. Publicado em: 2005-10
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12. An automatic flow-batch standard-addition method for sodium determination in alcohol fuel by flame photometry
A agência brasileira que regulamenta a produção e comercialização de álcool combustível estabelece que a concentração de sódio deve ser determinada usando a fotometria de chama e curva analítica construída com soluções padrão preparadas em uma matriz que se assemelhe às amostras. Todavia, essa metodologia pode produzir resultados inexatos por
J. Braz. Chem. Soc.. Publicado em: 2003-04