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dc.creatorLima, Francielle Roberta Dias de-
dc.creatorEngelhardt, Mateus Moreira-
dc.creatorVasques, Isabela Cristina Filardi-
dc.creatorMartins, Gabriel Caixeta-
dc.creatorCândido, Geraldo de Sousa-
dc.creatorPereira, Polyana-
dc.creatorReis, Rayner Hugo Cassa Louzada dos-
dc.creatorSilva, Aline Oliveira-
dc.creatorGuilherme, Luiz Roberto Guimaraes-
dc.creatorMarques, João José Granate de Sá e Melo-
dc.date.accessioned2020-04-28T17:58:31Z-
dc.date.available2020-04-28T17:58:31Z-
dc.date.issued2019-
dc.identifier.citationLIMA, F. R. D. et al. Evaluation of mercury phytoavailability in Oxisols. Environmental Science and Pollution Research, [S.I.], v. 26, p. 483-491, 2019.pt_BR
dc.identifier.urihttps://link.springer.com/article/10.1007/s11356-018-3623-5pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/40401-
dc.description.abstractMercury is a metal which is potentially toxic for the environment. Many factors control its retention in the soil, such as cation exchange capacity, pH, clay content, organic matter, and redox potential. It is important to know the phytotoxic effects of soil Hg to prevent environmental contamination and its entry into the food chain. Several analytical methods are used to measure metal phytoavailability in soils, but none has been reported for Hg in Oxisols, the most common soil class in Brazil and a very important soil class throughout the tropics. The aim of this study was to select the chemical extractor that best correlated the Hg levels in plants and the Oxisols. The soils used were classified as Dystrophic Red-Yellow Oxisol (LVAd) and Dystroferric Red Oxisol (LVdf), which were collected in the 0–0.2-m soil layer. The species selected for cultivation were a monocotyledon, oat (Avena sativa L. cv. São Carlos) and a eudicotyledon, common bean (Phaseolus vulgaris L. cv. Madrepérola). Each test plot was composed of a 500 cm3 pot filled with soil samples contaminated with HgCl2. Treatments were arranged in a completely randomized design, with four replications. The experiment was conducted for 30 days. Mercury contents were separately extracted with the following extractors: USEPA 3051A, Mehlich-1, Mehlich-3, DTPA, and water. Mercury was determined by hydride generation atomic absorption spectroscopy. The extracted contents were correlated with the contents in the tissues of the plants’ aerial part by the Pearson correlation. Although it is not considered a standard procedure to evaluate metal phytoavailable contents, the method that presented the best correlations between soil Hg and plant Hg was USEPA 3051A (r = 0.75*). As expected, the worst correlation was with water (r = 0.57* for common bean and r = 0,05ns for oat).pt_BR
dc.languageenpt_BR
dc.publisherSpringer Naturept_BR
dc.rightsrestrictAccesspt_BR
dc.sourceEnvironmental Science and Pollution Researchpt_BR
dc.subjectSoils - Contaminationpt_BR
dc.subjectMercuric chloridept_BR
dc.subjectTropical soilspt_BR
dc.subjectChemical extractorpt_BR
dc.subjectSolos - Contaminaçãopt_BR
dc.subjectCloreto de mercúriopt_BR
dc.subjectSolos tropicaispt_BR
dc.subjectExtrator químicopt_BR
dc.titleEvaluation of mercury phytoavailability in Oxisolspt_BR
dc.typeArtigopt_BR
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