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Are children playgrounds safe play areas? Inorganic analysis and lead isotope ratios for contamination assessment in recreational (Brazilian) parks

Gredilla, Ainara; Fdez-Ortiz De Vallejuelo, Silvia; Gomez Nubla, Leticia; Carrero, Jose Antonio; De Leão, Felipe Baptista; Madariaga, Juan Manuel; Silva Oliveira, Luis Felipe (Environmental Science and Pollution Research, 2017-09-09)

In city playgrounds, there is a potential risk of harming children’s health by contamination coming from anthropogenic activities. With the aim to determinate the sources and the risk of hazardous elements, soil samples ...
Exposure to nanometric pollutants in primary schools: Environmental implications

Rojas, Juan C.; Sánchez, Nazly E.; Schneider, Ismael Luis; Silva Oliveira, Marcos Leandro; Teixeira, Elba Calesso; Silva Oliveira, Luis Felipe (Urban Climate, 2019-12-21)

School children are highly susceptible to chemicals in the atmosphere. Some studies have demonstrated that the pollution is related to respiratory problems and impaired cognitive development in children. In this context, ...
Heavy metal pollution and toxicity assessment in Mallorquin swamp: a natural protected heritage in the Caribbean Sea, Colombia

Fuentes Gandara, Fabio Armando; Pinedo-Hernández, José; Gutiérrez, Edwin; Marrugo-Negrete, José; Díez, Sergi (Corporación Universidad de la Costa, 2021)

This work reports the level and ecotoxicity impact of metals in the sediments of the Mallorquín swamp, a protected coastal lagoon in the Caribbean coast of Colombia. The distribution of metals was in the following decreasing ...
Impact assessment of metals on soils from Machu Picchu archaeological site

Morillas, Héctor; Gredilla, Ainara; Carrero, José Antonio; Huallparimachi, Gladys; Gallego-Cartagena, Euler; Maguregui, Maite; Marcaida, Iker; Astete, Fernando; Madariaga, Juan Manuel (Universidad de la Costa, 2020-03)

Machu Picchu is an archaeological Inca sanctuary from the 15th century, located 2430 m above the sea level in the Cusco Region, Peru. In 1983, it was declared World Heritage Site by UNESCO. The surroundings and soils from ...

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Are children playgrounds safe play areas? Inorganic analysis and lead isotope ratios for contamination assessment in recreational (Brazilian) parks
...
Gredilla, Ainara | 2017-09-09

In city playgrounds, there is a potential risk of harming children’s health by contamination coming from anthropogenic activities. With the aim to determinate the sources and the risk of hazardous elements, soil samples were collected in 19 selected playgrounds of different urban and rural areas from the Rio Grande do Sul state (Brazil). The concentration of 23 metals and metalloids and lead isotopic ratios were determined by ICP-MS. The methodology proposed here, firstly, classified the parks according to the average metal content by means of the NWACs (Normalized-and-Weighted Average Concentrations) and assess the contamination risk determining the Contamination Factors (CFs). Finally, statistical tools (correlation analysis and principal component analysis) were used to identify the most important contamination sources. The statistical tools used, together with lead isotopic composition analysis of the samples, revealed that coal combustion is the main source of contamination in the area. Vegetation was identified as a barrier for the contamination coming from the city. Nonetheless, some of the soils present a possible toxicological risk for humans. In fact, Cr, Sb, and Pb concentrations were higher than the Residential Intervention Values (VIRs) defined by the Environmental Protection Agency of the State of São Paulo, also in Brazil.

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Exposure to nanometric pollutants in primary schools: Environmental implications
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Rojas, Juan C. | 2019-12-21

School children are highly susceptible to chemicals in the atmosphere. Some studies have demonstrated that the pollution is related to respiratory problems and impaired cognitive development in children. In this context, the objective of this study was to determine nanoparticles and associated species and their origin in fresh air currents in La Salle Canoas School in Rio Grande do Sul (Brazil). Different analyses by using high-resolution transmission electron microscopy with energy-dispersive, X-ray spectroscopy (HR-TEM/SAED/EDS), and the scanning (STEM) mode were carried out. The EDS analysis of the atmospheric particles demonstrated that materials contain a significant proportion of elements such as Cr, Fe, Mn, Ni, and Si and other trace metals Zn, Pb, Zr, Ca, Cu, K, Cr, and Cd from exhaust and non-exhaust. The main source of the particles was emission from internal combustion in motor vehicles, road dust, and brake and tire wear. This emphasizes the importance of urban planning to reduce exposure of children to traffic gas emissions.

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Heavy metal pollution and toxicity assessment in Mallorquin swamp: a natural protected heritage in the Caribbean Sea, Colombia
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Fuentes Gandara, Fabio Armando | 2021

This work reports the level and ecotoxicity impact of metals in the sediments of the Mallorquín swamp, a protected coastal lagoon in the Caribbean coast of Colombia. The distribution of metals was in the following decreasing order: Zn > Cu > Pb > Cd > Hg, showing statistically significant differences among sites. The average Pb and Cd concentrations in sediments were about 17 and 5 times higher, respectively, compared to those in background values. Several contamination indices suggested moderate contamination of Hg, Cu, and Zn, and strong pollution due to Cd and Pb. Multivariate analysis revealed spatial variations for metals and its anthropogenic origin, such as municipal and industrial wastewater discharges (Pb, Zn, and Hg) and agricultural activities (Cd and Cu). These findings showed the negative impact of human activities and the need to apply protective management strategies.

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Impact assessment of metals on soils from Machu Picchu archaeological site
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Morillas, Héctor | 2020-03

Machu Picchu is an archaeological Inca sanctuary from the 15th century, located 2430 m above the sea level in the Cusco Region, Peru. In 1983, it was declared World Heritage Site by UNESCO. The surroundings and soils from the entire archaeological site are carefully preserved together with its grass parks. Due to the importance of the archaeological city and its surroundings, the Decentralized Culture Directorate of Cusco-PAN Machu Picchu decided to carry out a careful monitoring study in order to determine the ecological status of the soils. In this work, elemental and molecular characterization of 17 soils collected along the entire park was performed by means of X-ray Diffraction (XRD) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) after acidic digestion assisted by microwave energy. Thanks to the combination of these analytical techniques, it was possible to obtain the mineral composition and metal concentrations of all soils from these 17 sampling points. Finally, different statistical treatments were carried out in order to confirm the ecological status of the different sampling points from Machu Picchu archaeological site concluding that soils are not impacted.

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Listar por tema "Metals"

Are children playgrounds safe play areas? Inorganic analysis and lead isotope ratios for contamination assessment in recreational (Brazilian) parks ﻿

Exposure to nanometric pollutants in primary schools: Environmental implications ﻿

Heavy metal pollution and toxicity assessment in Mallorquin swamp: a natural protected heritage in the Caribbean Sea, Colombia ﻿

Impact assessment of metals on soils from Machu Picchu archaeological site ﻿

Envíos recientes

Are children playgrounds safe play areas? Inorganic analysis and lead isotope ratios for contamination assessment in recreational (Brazilian) parks

Exposure to nanometric pollutants in primary schools: Environmental implications

Heavy metal pollution and toxicity assessment in Mallorquin swamp: a natural protected heritage in the Caribbean Sea, Colombia

Impact assessment of metals on soils from Machu Picchu archaeological site

Are children playgrounds safe play areas? Inorganic analysis and lead isotope ratios for contamination assessment in recreational (Brazilian) parks

Exposure to nanometric pollutants in primary schools: Environmental implications

Heavy metal pollution and toxicity assessment in Mallorquin swamp: a natural protected heritage in the Caribbean Sea, Colombia

Impact assessment of metals on soils from Machu Picchu archaeological site