Arsenic Speciation in Environmental Samples of a Mining Impacted Sector of Central Chile

Richtera, Pablo; Seguel, Rodrigo; Ahumada, Inés; Verdugo, Rubén; Narváez, Jessica; Shibatac, Yasuyuki

doi:10.4067/s0717-97072004000400012

Cited by 8 publications

(17 citation statements)

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“…This is particularly true of aquatic systems of the VI Region in Central Chile, which are affected by mining activities. In previous studies, 9,10 it was found that arsenic was mainly present as As(V) in both water and sediment, and organic arsenic species were not detected. The presence of high concentrations of arsenic and copper found in all the samples under analysis suggests a real impact of the mining activity over the region.…”

Section: Introductionmentioning

confidence: 92%

“…[5][6][7][8][9][10] Therefore, in order to understand the environmental behavior of elements including pollutants and taking into account that sediments are in continuous interaction with the liquid phase, it is more convenient to combine both water and sediment analysis. [8][9][10] Chile has experienced a dramatic increase in its mining activities in the past few years, bringing about investments and technological changes. Some of these changes, however, have had damaging effects on the environment.…”

Section: Introductionmentioning

confidence: 99%

“…It has been demonstrated that heavy metals are emitted from this source. 9,10 In that area, the Cachapoal River has received for years the effluent from mining activities, affecting agricultural and probably aquatic life close to the outlet of the Cachapoal River into the Pacific Ocean. Taking these antecedents into account, the biggest mining company in Chile is taking steps to ensure that copper becomes an environmentally sustainable element over time and will contribute to reduce any possible negative effects of its production and use throughout its life cycle.…”

Section: Introductionmentioning

confidence: 99%

“…Taking these antecedents into account, the biggest mining company in Chile is taking steps to ensure that copper becomes an environmentally sustainable element over time and will contribute to reduce any possible negative effects of its production and use throughout its life cycle. 9,11 It has been internationally recognized that in Chile there is lack of scientific information related to the flow and mobility of contaminants in aquatic ecosystems 12 . This is particularly true of aquatic systems of the VI Region in Central Chile, which are affected by mining activities.…”

Section: Introductionmentioning

confidence: 99%

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Preliminary Physical Chemical Characterization of River Waters and Sediments Affected by Copper Mining Activity in Central Chile: Application of Multivariate Analysis

Narváez

Richter

Toral

2007

J. Chil. Chem. Soc.

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The concentration of trace elements and other analytes of environmental interest was determined in waters and sediments of the Coya and Cachapoal rivers (VI Region, Central Chile), which corresponds to a location highly polluted by copper mining activity.Analysis showed the highest pollution at the sampling station closest to the copper smelter (Caletones), then pollutant concentrations decrease at sites far away from this source.The statistical correlation between the different variables determined in waters and sediments was carried out through a principal components analysis (PCA). It was observed that the parameters fell into three groups: (a) analytes present in waters and sediments which come from the mining wastes (b) analytes of lithogenic character present in waters plus alkaline and alkaline earth metals plus organic matter present in sediments and waters, and (c) lithogenic elements present in sediments. On the other hand, by using cluster analysis (CA), it was possible to group the different sampling stations according to their extent of pollution.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preliminary Physical Chemical Characterization of River Waters and Sediments Affected by Copper Mining Activity in Central Chile: Application of Multivariate Analysis

Narváez

Richter

Toral

2007

J. Chil. Chem. Soc.

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“…We can observe a skin alteration in relation to the normal morphology, affecting the individuals back and the epidermis thickness 5 . The presence of high concentrations of arsenic and copper was determined in environmental matrixes such as river water, river sediments, and soils, in the surroundings of the Caletones smelter, in the VI Region of Chile 6 . This determination was carried out using Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES) technique.…”

Section: Introductionmentioning

confidence: 99%

Determination of Arsenic (Iii) by Differential Pulse Polarography in the Waters of Camarones Area, Chile

Gamboa

Cornejo

Acarapi³

et al. 2013

J. Chil. Chem. Soc.

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As (III) was determined by differential pulse polarography (DPP) in 1 mol L -1 HCl as supporting electrolyte. For quantification, the -0.35 V peak (versus Ag/ AgCl) was chosen. The obtained detection and quantification limits were 2.7 (3 SD) and 8.9 (10 SD) μg L -1 respectively. The method was used for the determination of As (III) on surface water samples from Camarones River, located in Camarones area, province of Arica, Chile (this area's water contain high levels of salinity). The results indicate that the proposed methodology is a suitable analytical alternative for As determination in natural waters with high levels of dissolved salts, as the waters of Camarones River. The method is not time consuming, nor tedious no prior treatment of the sample is required. The results show that As (III) concentrations in waters of Camarones River are about 10 times higher than the guide values established by WHO for water intended for human consumption.

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The environmental geochemical baseline, background and sources of metal and metalloids present in urban, peri-urban and rural soils in the O´Higgins region, Chile

Durán

Aliaga²,

Deckart

et al. 2021

Environ Geochem Health

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The importance of environmental geochemistry baseline in soils of O´Higgins Region, Chile, since it hosts in its eastern area one of the major Cu-Mo producing mines in the country, is to establish and explain relationships between the chemical compositions of the Earth’s surface and potential contaminants sources such as mining industry, agriculture and urban activity. A total of 109 samples of urban, peri-urban and rural soils were analyzed with X-ray fluorescence to determine most of the elemental concentrations analyzed. The C and S analyses were performed with the high-temperature combustion method, and a MERCUR mercury analyzer was used for Hg. The study shows that the distribution patterns for most major elements and some trace elements are controlled by the lithologic substrate. This study identified areas with metals and metalloids in high concentrations, which are a risk to the environment and health according to established international regulations. Some of these components correspond to Cu (2500 ppm), Mo (26,5 ppm), As (134,6 ppm), Cr (206.6 ppm), Hg (0.2 ppm), Ni (26.4 ppm), Pb (61.7 ppm), V (227,2 ppm) and Zn (180.3 ppm). Through an elementary association analysis, most of these elements resulted from extractive activities of Cu, metal alloys and oil combustion. It was also possible to trace the use of fertilizers and pesticides in agricultural soils, as well as the combustion of oil related to vehicles in the study area. This information is relevant to implement environmental management strategies to control possible exposure to toxic compounds to human health.

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Arsenic Speciation in Environmental Samples of a Mining Impacted Sector of Central Chile

Cited by 8 publications

References 0 publications

Preliminary Physical Chemical Characterization of River Waters and Sediments Affected by Copper Mining Activity in Central Chile: Application of Multivariate Analysis

Preliminary Physical Chemical Characterization of River Waters and Sediments Affected by Copper Mining Activity in Central Chile: Application of Multivariate Analysis

Determination of Arsenic (Iii) by Differential Pulse Polarography in the Waters of Camarones Area, Chile

The environmental geochemical baseline, background and sources of metal and metalloids present in urban, peri-urban and rural soils in the O´Higgins region, Chile

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