Fracionamento de metais pesados em solo contaminado antes e após cultivo de arroz

Silva, Maria Lígia de Souza; Vitti, Godofredo César

doi:10.1590/s0100-40422008000600021

Cited by 11 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, the soil under study was produced by the weathering of Precambrian granite and gneiss rock and, according to Correa et al (2008), who studied the same soil type, contains low levels of iron oxides. However, the present study showed a similar contribution by the oxide fraction and organic matter in Cu, Mn and Zn adsorption and identified these fractions as the main complexing agents, results that are consistent with those reported in similar studies (RAMALHO et al, 2000, FERNANDES et al, 2007VITTI, 2008).…”

Section: Metalsupporting

confidence: 93%

“…However, the present study showed a similar contribution by the oxide fraction and organic matter in Cu, Mn and Zn adsorption and identified these fractions as the main complexing agents, results that are consistent with those reported in similar studies (RAMALHO et al, 2000, FERNANDES et al, 2007VITTI, 2008).…”

Section: Metalsupporting

confidence: 93%

“…This interpretation is possible because EF levels varied from 1.05 to 1.9 mg L -1 , making it the second most important fraction in terms of Pb adsorption. Although several studies have found Fe, Al and Mn oxides to be the main adsorbers of Pb VITTI, 2008;LINHARES et al, 2009;KUMMER et al, 2011), this did not occur for the soil in question, likely because it is essentially kaolinitic, as characterized by Silva et al (2001). Means followed by the same letters (upper case in the rows and lower case in the columns) did not differ significantly according to Tukey's test at 5% probability.…”

Section: Resultsmentioning

confidence: 88%

See 2 more Smart Citations

Fractionation of heavy metals in yellow latosol cultivated with vegetables

Silva

Galindo

Filla

et al. 2018

SCA

View full text Add to dashboard Cite

Sequential extraction or chemical fractionation of heavy metals allows inferences to be made about their origin, occurrence, bioavailability, toxic potential and environmental contamination. Thus, the present study aimed to assess the distribution of Cu, Mn, Ni, Pb and Zn among the different soil fractions and landscape compartments of a yellow latosol cultivated with vegetables. Soil samples were collected from five areas cultivated with tomato (Lycopersicon esculentum, Mill.), lettuce (Lactuca sativa), chili pepper (Capsicum annuum L.) and chard (Beta vulgaris L.) in different slope positions (upper, middle, lower), and four reference areas (native forest), at a depth of 0.00 - 0.20 m. Heavy metal levels were also assessed in water used to irrigate the crops and for human consumption by collecting 200 ml of water samples from reservoirs. The soil samples were sequentially fractionated to quantify the concentrations of adsorbed Cu, Mn, Ni, Pb and Zn in the exchangeable (EF), organic matter (OF), amorphous and crystalline iron oxide fractions (AFeOx and CFeOx). Landscape position only interfered significantly in heavy metal adsorption in the soil for Cu and Ni associated with CFeOx and Zn bound to the EF in the farming areas. The highest Cu, Ni, Pb and Zn levels were found in the fractions with less stable chemical bonds (bound to organic matter), in addition to a strong affinity between Cu, Zn and Mn and the oxide fractions (AFeOx + CFeOx). The low affinity of Pb and Ni for the AFeOx and CFeOx fractions indicates greater contamination potential for the water reservoirs. In the short term, organic matter is the main source of remediation for heavy metal contamination in soil, making it important to adopt conservation practices aimed at reducing OM losses.

show abstract

Section: Metalsupporting

confidence: 93%

Section: Metalsupporting

confidence: 93%

Section: Resultsmentioning

confidence: 88%

See 1 more Smart Citation

Fractionation of heavy metals in yellow latosol cultivated with vegetables

Silva

Galindo

Filla

et al. 2018

SCA

View full text Add to dashboard Cite

show abstract

“…O teor de matéria orgânica, no horizonte superficial, correlacionou-se positivamente (p < 0,001) com os teores de Zn (r = 0,55) e Cu (r = 0,47), tendência explicada pela afinidade desses elementos com a fração matéria orgânica do solo Melo et al, 2008;Silva & Vitti, 2008). Essa tendência corrobora o observado por Araújo & Nascimento (2005) em extrações sequenciais, que obtiveram os maiores teores de Zn associado às frações orgânicas e residuais.…”

Section: Resultsunclassified

Teores de Fe, Mn, Zn, Cu, Ni E Co em solos de referência de Pernambuco

Biondi

Nascimento

Neta

et al. 2011

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…These activities, which are the result of the chemical, metallurgical and domestic sewage industries, can also directly influence the high concentrations of Zn and Cd in the SPM of the Piraquê-Açu River. In addition, in the estuarine region, the eucalyptus monoculture implemented in the 1960s 80 contributes to this enrichment due to the direct application of chemical products such as pesticides and fertilisers, [81][82][83] which consist of N:P:K (5:33:6), borax and zinc sulphide 84 because the soils in the Espírito Santo state generally contain low levels of Zn (22.61 mg kg -1 ). 85 The use of mineral and organic fertilisers, limestone and pesticides in agriculture is considered to be a source of metals for the environment, especially when crops are developed near fluvial or estuarine courses, [86][87][88] as is the case of the Piraquê-Açu and Piraquê-Mirim drainage basin.…”

Section: Metals and Arsenic Associated With Spmmentioning

confidence: 99%

Geoquímica do material particulado em suspensão em um sistema estuarino tropical, sudeste do Brasil

Monteiro¹,

Sá²,

Neto³

2017

Quim. Nova

View full text Add to dashboard Cite

The aim of this study is to assess the variation of the geochemistry of suspended particulate matter (SPM) in the tropical estuarine system composed of the adjacent Piraquê-Açu and Piraquê-Mirim (ES) rivers using SPM sampled with sediment traps (45 µm mesh) installed in the drainage channels. We collected SPM during different tidal stages and seasonal periods and analysed the metals using inductively coupled plasma mass spectrometry according to EPA 3051A, the mineralogy using X-ray diffraction, the particle size using laser ray diffraction, and organic matter (OM) using calcination. The traps collected enough SPM to perform analyses for each sampling period. The SPM consists of silt size particles, and the percentage of OM is between 20 and 40%. The particles are dominated by kaolinite and quartz, and gibbsite, haematite, goethite, and pyrite are also present. These materials are found in the Barreiras Formation, through which the drainage system cuts. The metal concentrations were higher in the summer: Al (3208.32 g kg ). The Piraquê-Açu River had higher metal concentrations than the Piraquê-Mirim River, and the geochemical indices of both rivers indicate that they naturally contribute to the estuarine system of the Piraquê-Açu and Piraquê-Mirim rivers (SEPAPM). However, anthropic interferences influence these indices at the confluence of the two channels.Keywords: sediment trap; metals; mineralogy; Piraquê-Açu. INTRODUCTIONEstuaries are transitional environments that act as biogeochemical filters that retain dissolved and particulate material, including pollutants.1-4 Because they are largely influenced by hydrodynamic processes (waves, currents, and tides), estuaries distribute these elements and determine whether the system is a retainer or an exporter.5 Several studies have addressed the chemical composition and transport of suspended particulate matter (SPM; ≥ 0.45 µm) from estuarine regions to the adjacent coastal zones, mainly to quantify the continental contribution to the oceans. [6][7][8][9][10][11] However, few studies have been conducted in estuaries located in small and medium river basins in tropical regions, especially in those where human impacts are not yet evident. Understanding the geochemistry of SPM and the processes that influence it in estuarine systems has become a challenge when considering conditioning parameters such as rainfall, river discharge, the concentrations of major and trace elements and the physicochemical variables that may modify the geochemical behaviour of the SPM.To address these issues, the estuarine system of the Piraquê-Açu and Piraquê-Mirim rivers (SEPAPM) was studied to 1) evaluate if the geochemistry of the SPM of these two adjacent fluvial channels with different drainages varies 12,13 and 2) test if a sediment trap can be used to collect SPM considering the difficulty of sampling SPM with conventional methods, which require filtering many litres of water to acquire sufficient material for the geochemical analysis. Study areaThe SEPAPM is located in the municipa...

show abstract

Fracionamento de metais pesados em solo contaminado antes e após cultivo de arroz

Cited by 11 publications

References 17 publications

Fractionation of heavy metals in yellow latosol cultivated with vegetables

Fractionation of heavy metals in yellow latosol cultivated with vegetables

Teores de Fe, Mn, Zn, Cu, Ni E Co em solos de referência de Pernambuco

Geoquímica do material particulado em suspensão em um sistema estuarino tropical, sudeste do Brasil

Contact Info

Product

Resources

About