trace amounts
VOLATILE OIL COMPOSITION OF THE LEAVES OF EUCALYPTUS CITRIODORA HOOK.
... in trace amounts included β-myrcene, n- eicosane, n-heneicos-3-ene, n-heneicos-10-ene, n- heneicos-8-ene, n-heneicosane, n-heneicos-4-ene, n- octadecan-3,12-diol, n-eicos-14-en-2-ol, n-eicosan-5-ol and ...
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Quím. Nova vol.37 número8
... In this study, a combination of LL-CPE with FAAS was deve- loped for preconcentrating and determining trace amounts of Pd(II) and Rh(III) ions in road dust samples. First, a phosphate buffer and Span 80 ...
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J. Braz. Chem. Soc. vol.28 número4
... extraction method. This method using only deionized water as extraction solvent was applied for the analysis of the trace amounts of iodine in table salts, tomatoes, chili, and different kinds of other food ...
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J. Braz. Chem. Soc. vol.16 número2 en a11v16n2
... A simple, rapid and sensitive spectrophotometric method has been developed for the determination of trace amounts of chromium using variamine blue as a chromogenic reagent. The proposed method is based on ...
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Quím. Nova vol.37 número7
... The optimization of a dispersive liquid–liquid microextraction protocol for the extraction of trace amounts of Sudan Blue II from samples, prior to its spectrophotometric detection, is described. This ...
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Quím. Nova vol.33 número7
... The application of organo nanoclay 5-(4-dimethylamino-benzylidene) rhodanine-immobilized as a new, easily prepared, and stable solid sorbent for preconcentration trace amounts of Au(III) ions in aqueous ...
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J. Braz. Chem. Soc. vol.23 número9
... procedure as a new and fast microextraction method termed vortex-assisted liquid-liquid microextraction (VALLME) for the extraction of trace amounts of alkylphenols from water samples. In this method, ...
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J. Braz. Chem. Soc. vol.24 número10
... Lastly, the procedure was applied to soil, anodic slime, gold ore and sea and stream waters samples for the determination of trace amounts of Au(III) ions after being verified the acc[r] ...
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J. Braz. Chem. Soc. vol.17 número7
... preparations containing these catecholamines have been available for many years. On the basis of this background, the determination of trace amounts of catecholamines is becoming increasingly important. In ...
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J. Braz. Chem. Soc. vol.20 número5
... A simple, fast, inexpensive and sensitive cloud point extraction method has been developed for the determination of trace amounts of cobalt in aqueous samples by FI-FAAS. A sensitivity improvement has been ...
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J. Braz. Chem. Soc. vol.22 número6
... A simple and selective method for separation and preconcentration of nickel has been developed. The method is based on the lotation of a complex of Ni and dimethylglyoxime (DMG) at the aqueous solution-n-hexane ...
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J. Braz. Chem. Soc. vol.18 número7
... Trace elements play important roles in biological processes, the compounds of which serve both as essential compounds and as toxins. Copper is both vital and toxic for many biological systems. Thus, the ...
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ISSN 1516-635X Oct - Dec 2017 v.19 n.4 663-672 http:dx.doi.org10.15901806-9061-2016-0369 Trace Mineral Sources and Rosemary Oil in the Diet of Brown Laying Hens: Egg Quality and Lipid Stability
... organic trace minerals in the experimental diets possibly led to a higher activation of antioxidant enzymes, such as glutathione peroxidase, inside the eggs, as these enzymes are mineral- dependent (Andrade & ...
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Confirming anthropogenic influences on the major organic and inorganic constituents of rainwater in an urban area
... et al., 2000). The major ions had relatively higher concentrations in the winter, which is a pattern opposite to the trend in rainfall. The ionic concentrations showed decreas- ing trends with increasing rainfall ...
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Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay
... Organic trace minerals are compounds consisting of metal ions bound to organic substances, including amino acids, peptides, or polysaccharide complexes, providing these ions with high biological availability, ...
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Fossilized bioelectric wire – the trace fossil Trichichnus
... et al., 2010; Risgaard-Petersen et al., 2014; Nielsen and Risgaard-Petersen, 2015). The electron transport in BESs may be realized in various ways, including transfer through long bacterial nanowires or along biofilm ...
9
Distribution pattern of trace metal pollutants in the sediments of an urban wetland in the southwest coast of India
... of trace metals in the sediments of Kottuli Wetland,whuich is in the south west coast of India Eight stations were strategically positioned along the length of wetland and sampled for trace metals (Cu, Mn, ...
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Bioaccumulation of trace elements by Avicennia marina
... Results: L evels of metals were found in the decreasing order: C d> C o> N i> P b> B > C r> Z n> M g> M n> C u> F e> A l. T he soil held more levels of metals than plant parts, but within ...
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Metabolomic Analyses of Leishmania Reveal Multiple Species Differences and Large Differences in Amino Acid Metabolism.
... different amounts of some amino acids, especially tryptophan and arginine, and catabolise these to end-products, indole-3-lactate and arginic acid respectively, that are simply ...
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Enhanced degradation of metalaxyl in agricultural soils of São Paulo State, Brazil (1)
... The different results found in Casa Branca and Itapetininga soils indicate that physical and chemi- cal characteristics of each soil may determine differ- ent composition and ability of the microbial commu- nity to ...
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