Aplicação de fósforo para imobilização química do cádmio em solo contaminado

Trevizam, Anderson Ricardo; Villanueva, Felipe Carlos Alvarez; Muraoka, Takashi; Filho, Virgílio Franco do Nascimento; Abreu-Junior, Cassio Hamilton

doi:10.1590/s0100-40422010000600003

Cited by 12 publications

(5 citation statements)

References 22 publications

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“…The artificial soil contamination was conducted by applying 250 mL of Cd solution [cadmium chloride monohydrate (CdCl 2 H 2 O)] and Pb solution [lead (II) chloride anhydrous (PbCl 2 )]. After the contamination, soil samples were homogenised and irrigated with distilled water up to 60% of its water‐holding capacity and incubated for 30 days at room temperature 25 °C ± 5 °C (Trevizam et al ., 2010). At the end of the incubation period, six wheat seeds of cultivar Coodetec CD150® were sown.…”

Section: Methodsmentioning

confidence: 99%

Implications of wheat farming in Cd(II) and Pb(II) contaminated red eutrophic Oxisol: an experimental pilot investigation

Gonçalves

Schwantes

Campagnolo

et al. 2023

Int J of Food Sci Tech

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SummaryThis study aimed (i) to assess the environmental problems of wheat farming in Oxisol with Cd and Pb below the acceptable levels established by national and international regulations, questioning their possible permissiveness; (ii) to investigate the metal distribution in wheat plant organs, and to predict possible implications of cultivation in hazardous conditions; (iii) to assess the grain and flour content of metals and to predict possible implications. The growth of plants, gas exchange parameters, nutritional composition, the yield of grains and metal distribution were evaluated. Cd and Pb are accumulated in different plant organs even when the legislation's limits are respected. 74% of Cd and 96% of Pb are accumulated in roots, while 3% of Cd and <1% of Pb are accumulated in grains. Cd and Pb caused nutritional disorders such as decreased foliar K, Ca, Cu, Zn, Fe and Mn, decreased canopy height, number of tillers, number of spikes, the volume of roots, aerial dry mass and yield of grains. Even if the established limits of Cd are respected, the flour will overtake the provisional tolerable monthly intake established by World Health Organisation. In the evaluated conditions, wheat cultivation in Oxisol within the national standard for Cd could result in hazardous levels in flour.

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Section: Methodsmentioning

confidence: 99%

Implications of wheat farming in Cd(II) and Pb(II) contaminated red eutrophic Oxisol: an experimental pilot investigation

Gonçalves

Schwantes

Campagnolo

et al. 2023

Int J of Food Sci Tech

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“…Para cada amostra, pesou-se 2 g de batom em tubos de borosilicato, adicionando 20 mL de HNO 3 concentrado P.A. e deixando em repouso por 2 horas (TREVIZAM et al, 2010).…”

Section: Métodounclassified

Identificação E Avaliação Dos Teores De Metais Tóxicos Em Batons

Gonçalves¹,

Rodrigues²,

Macena³

et al. 2018

COLLOQ EXACTARUM

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More and more demanding consumers have made cosmetic companies invest in products and research aiming at improve product quality and enhance consumer health and sustainability. Some metals are essential for the good development of beings, but there are others that are harmful to health. Of all metals only 30 are toxic, and lead, cadmium and chromium belong to this group. These metals are present in the pigments used in the manufacture of lipsticks. The legislation establishes safety limits for the presence of these metals in cosmetics, since the risk of contamination is linked to their concentration and exposure. For this reason the analysis of potentially toxic metals in lipsticks is necessary, quantifying and comparing to the contents presented not only by the companies, but also by the current legislation. Thus, this study aimed to quantify the levels of lead, cadmium and chromium in lipsticks of different brands, using acid digestion method and determination by atomic absorption spectrometry. From the results, it was possible to observe the presence of high levels of cadmium in all the analyzed brands and the highest concentrations were found in the darker shades.

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“…Os produtos utilizados para essa imobilização podem ser considerados agentes inertizantes. O uso de agentes inertizantes em solos contaminados geralmente tem o intuito de aumentar a complexação de elementos traço na superfície das partículas do solo, principalmente naquelas compostas de óxidos, hidróxidos e óxi-hidróxidos de Fe e Al, e de precipitá-los na solução (CASTALDI et al, 2005;TREVIZAM et al, 2010). Segundo a estratégia de contenção química, não ocorre uma redução efetiva do contaminante, mas os riscos à saúde e ao ambiente são minimizados a níveis aceitáveis por uma manipulação física ou química da área contaminada (MESQUITA et al, 2006).…”

Section: Introductionunclassified