|
|
|
|
| |
|
|
| Soares,Ricardo; Escaleira,Viviane; Campos,David Vilas Boas de; Monteiro,Maria Inês Couto; Carneiro,Manuel Castro; Santelli,Ricardo Erthal; Bernardi,Alberto Carlos de Campos. |
| Foram comparadas as concentrações de Na, K e P em extratos de solos, obtidas por um método de extração convencional, no qual é utilizada uma razão solo:extrator (Mehlich-1) de 1:10, com aquelas encontradas utilizando uma razão solo:extrator (Mehlich-1) de 1:5. Também, foram comparados os resultados obtidos por técnicas de quantificação convencionais, nas quais Na e K são quantificados por fotometria de chama e P por espectrofotometria de absorção molecular, com aqueles encontrados por espectrometria de emissão óptica com plasma indutivamente acoplado (ICP OES). Foram analisadas 15 amostras de solo brasileiro. No estudo de repetibilidade aplicado a todos os resultados, os maiores CVs foram encontrados para P e Na, principalmente quando as concentrações dos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Análise de solo; ICP OES; Mehlich-1. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100012 |
| |
|
|
| SANTOS,WALTER N.L. DOS; SAUTHIER,MARIA CELESTE S.; CAVALCANTE,DANNUZA D.; BENEVIDES,CLÍCIA M.J.; DIAS,FÁBIO S.; SANTOS,DANIELE C.M.B.. |
| ABSTRACT The atemoya is a hybrid fruit obtained by crossing of cherimoya (Annona cherimola Mill.) with sweet sop (Annona squamosa L.). The information about chemical composition of atemoya is scarce. The mineral composition was evaluated employing Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES) and the centesimal composition and the physico-chemical parameters were assessed employing procedures described in the AOAC methods. The total phenolic compounds (TPC) and total flavonoids (TF) were determined using spectroanalytical methods. Considering the Reference Daily Intake (RDI), the concentrations of K, Cu and Vitamin C found in atemoya were the highest, representing about 32, 23 and 37% of the RDI, respectively. The total carbohydrates... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atemoya; Food composition; ICP OES; Flavonoids; Phenolics. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401243 |
| |
|
| |
|
|
| Santos,Éder José dos; Santos,Arlene Bispo dos; Herrmann,Amanda Beatriz; Kulik,Suzete; Baika,Loana Mara; Tormen,Luciano; Curtius,Adilson José. |
| An on-line method for Cd and Pb pre-concentration and simultaneous determination in acid digested seafood by inductively coupled plasma optical emission spectrometry (ICP OES) was developed. The on-line pre-concentration was based on the complex formation of the analytes with the ammonium salt of O,O-diethyldithiophosphate (DDTP) and using the Amberlite XAD-4 resin as a solid support in a homemade column. Different conditions of the flow injection system, such as solutions flow rates, nebulizer pressure and eluent concentration were optimized. Three certified reference materials of lobster hepatopancreas, dogfish liver and fish protein, three samples of fish muscle and three samples of shrimp were digested with HNO3, H2O2 and H2SO4 in a microwave system... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cd; Pb; ICP OES; Diethyldithiophosphate; XAD-4; Seafood; Solid phase extraction. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100017 |
| |
|
|
| Santos,Éder José dos; Baika,Loana Mara; Herrmann,Amanda Beatriz; Kulik,Suzete; Sato,Charyane Satie; Santos,Arlene Bispo dos; Curtius,Adilson José. |
| A method for evaluating inorganic constituents in the grass by ICP OES is proposed. The samples were digested with nitric acid plus hydrogen peroxide in a microwave system. Seventeen samples were collected in the metropolitan area of Curitiba and Castro in the Paraná State, Brazil. The following elements were studied: Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Se and Zn. The linear coefficients of the curves were higher than 0.999 and the precision, expressed as the relative standard deviation, which was below 10%, being considered adequate. The accuracy was validated by using the recovery test (recoveries from 80 to 107%) and by the analysis of botanical certified materials. For one sample, two other digestion procedures, using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ICP OES; Inorganic constituents; Acid digestion; PCA. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000300017 |
| |
|
|
|
