fast assessment of mineral constituents in grass by inductively coupled plasma optical emission spectrometry
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ID: 197452
2012
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Abstract
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 two different mixtures of nitric and hydrochloric acids, produced results in agreement with the adopted procedure. Eleven out of the twenty studied elements could be quantified in real samples. High concentrations of Ca, K, Mg and P, the essential elements for bovines and other animals, were found. The results were evaluated using the principal component analysis that gathered the samples in three groups, according to the areas where the plants were grown.
| Reference Key |
santos2012brazilianfast
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|---|---|
| Authors | ;Éder José dos Santos;Loana Mara Baika;Amanda Beatriz Herrmann;Suzete Kulik;Charyane Satie Sato;Arlene Bispo dos Santos;Adilson José Curtius |
| Journal | current drug delivery |
| Year | 2012 |
| DOI |
10.1590/S1516-89132012000300017
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| URL | |
| Keywords | Keywords not found |
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