Examples of using Sequential extraction in English and their translations into Portuguese
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Sequential extraction of heavy metals in bottom sediments along the Tiete River(SP):….
Both materials were subjected to sequential extractions with dmso, water, edta, citric acid and naoh.
Sequential extraction and ionic speciation of zinc, copper and cadmium in oxisols….
Then the soil samples used in chromium removal were analyzed by sequential extraction to verify the metal layers interact with the main soil.
Maceration and sequential extractions with solvents in order of increasing polarity were performed to purify the extracts.
After treatment with ethanol to inactivating enzyme, pulp andpeel were subjected to sequential extractions with water, citric acid and sodium hydroxide solutions.
Sequential extraction consists in the use of a number of extractors with different chemical properties that are progressively applied in a sample.
This study assessed different zn forms in soil by sequential extraction in a dystroferric red latosol(oxisol) under different doses of p, in a no-tillage area.
The sequential extraction was carried out with the following extractors: 1m calcium chloride, 0.1 m acetic acid/ 5% ammonium acetate(ph 5.0), 0.5 m acetic acid, 0.5 hydrochloric acid on the storage times: 0, 30 and.
The objective of this study was to evaluate the influence of sequential extraction of cu, fe, mn, mg and zn in fruits and vegetables residue flour(ffh) during storage for up to 60 days.
The analyses were carried out in accordance with methodologies certified: organic matter; total carbon; total nitrogen; carbonates content; ph, electrical conductivity;sodium and potassium; sequential extraction of metal carbonate slices; iron and organic matter; infra.
Organic extracts were prepared by sequential extraction in ethanol, ethyl acetate and hexane, followed by evaporation of solvents and lyophilization.
Zinc is an important micronutrient to plant growth, butit can be problem when present in large amountsbeing the sequential extraction a promising tool to better understand the behavior of zn in the soil.
Therefore, sequential extraction of humic acid fractions(ha), fulvic acid(fa) and humin soil that received increasing additions of ros(six treatments- t1 to t6) were conducted.
For it following parameters were analyzed: granulometry, mineralogy, organic matter,heavy metal, sequential extraction of heavy metals, polycyclic aromatic hydrocarbons(hpas), lead isotope signature.
The first one was using the most common normative method; the second was using a method based on terrigenous values obtained by total concentrations of ba and al from rivers around the study area;the third one determined by sequential extraction.
There are in the literature various procedures of sequential extraction, however, the most accepted and currently used is the mbcr modified community bureau of reference.
For the current paper the following tests were performed: mineralogical characterization(xrd and sem/eds), particle size distribution, determination of physical and chemical properties(ph, eh and ec), solubilization and leaching tests,ph variation, sequential extraction and aquatic ecotoxicity were carried out.
Thus, this work aimed to evaluate, through the sequential extraction, cu and zn behavior, sewage sludge in cultivated with pennisetum purpureum in different periods.
To assess the availability, distribution of metals in soil mobility eou from anthropogenic contributions, as intensive use of agrochemicals are used different methods of extraction, partial designated(edta and aqua regia),total digestion or sequential extraction use of a number of extractors, also known as sequential extraction.
Firstly, the modified geological survey of canada sequential extraction protocol was applied, resulting in six hm fractions with progressively weaker extractability.
Sequential extraction is an important technique in the environmental assessment process for the identification and quantification of metals, as well as characterization of contaminated areas, as it provides useful information such as the origin, mode of occurrence, chemical and biological availability, mobility of metals and association of them with mineral/solid phases.
Samples of the six soils were used to assess the interaction with cd(ii)using sequential extraction and the speciation with x-ray absorption near edge structure spectroscopy(xanes) to evaluate the adsorption kinetics.
Two types of sequential extraction were carried out in a fixed bed: the first type in three stages, using scco2 in the first step, the ethanol in the second step and water in the third step at temperatures of 40 °c and 50 °c and pressures of 300 bar and 400 bar; the second type in two steps, using supercritical carbon dioxide in a first step, followed by a second extraction with a mixture of scco2/ethanol/water in different proportions, at 40 °c and 300 bar.
Metal fractionation in mangrove sediment(surface and depth profile)of paciência river in maranhão island was conducted using the method of sequential extraction protocol by the european commission. the metal concentrations were determined using inductiv.
Material was then submitted to three sequential extractions, the first was aqueous at room temperature(10%, 1 h), the second was aqueous at temperature of 80°c(10%, 2 h), and third was alkaline(naoh 0,5 m, 2 h) at temperature of 80°c.
One of the methods used to find the distribution of the metals in different forms that make up the sediment is the sequential extraction, which comprises subjecting the pellet sample to conditions of extraction steps increasingly stronger.
With the combination of different sequential extraction techniques. the extracts were obtained by sequential extraction in fixed bed(60 °c and 400 bar), first by extraction with supercritical carbon dioxide(scco2), followed by extraction with ethanol in a second step and finally extracted with water in a third step.
Regarding adipose tissue,the RNA will be extracted from~200mg of adipose tissue through a sequential extraction procedure using TriZol, and will be sent for RNA-sequencing or ready to reverse transcriptase;
From the analysis of sediments of 1 profile perpendicular to the coastline, with a total of testimonies, totaling 34 03 samples were evaluated the composition of sediment geochemistry, correlating them with the type of origin of sediments; given the availability of metals, iron and carbonate fraction organic matter,through selective sequential extractions; identification of variations in relation to sedimentológicas characteristics; determination of sedimentation rate and the sequence of sediments.