Hydrochemistry and weathering rates on Corumbataí River basin, São Paulo State, Brazil

Bonotto, Daniel Marcos; Lima, Jorge Luis Nepomuceno de

doi:10.1016/j.jhydrol.2009.12.044

Cited by 8 publications

(4 citation statements)

References 69 publications

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“…Since most water samples fell within the Gibbs diagram ( Figure 5), it is unlikely that anthropogenic activities significantly influenced solute concentrations in this river [24]. Rather, most hydrochemical parameters fell within the fields defined by Na + /(Na + + Ca 2+ ) or Cl − /(Cl − + HCO3 − ) endmembers, which suggests that the river chemistry is predominantly affected by rock weathering [25].…”

Section: Processes Controlling River Solutesmentioning

confidence: 93%

Hydrochemical Characteristics, Controlling Factors, and Solute Sources of Streamflow and Groundwater in the Hei River Catchment, China

Kou

Zhou

Hua

et al. 2019

Water

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Water scarcity in arid regions is exacerbated by water quality degradation from anthropogenic contamination. In water-scarce regions, it is crucial to identify hydrochemical characteristics and pollution sources for effective water resource management. In this study, the Hei River—located in the Loess Plateau of China, which is an arid region with substantial anthropogenic-induced environmental changes—was selected as the study area to investigate these issues. The major ions of 242 streamflow and groundwater samples were measured during the 2014 and 2015 dry and flood seasons. Using a Piper diagram, a fuzzy membership function, a Gibbs diagram, and a forward model, the hydrochemical facies and water quality of streamflow and groundwater were investigated, and the main river solute sources and relative contributions were determined using quantitative and qualitative methods. The total dissolved solids were 279.6 ± 127.8 mg·L−1 for streamflow and 354.0 ± 157.4 mg·L−1 for groundwater, indicating low salinity water. However, the hydrochemical characteristics varied with season and location. Qualitatively, the atmospheric inputs, human activities, and rock weathering all contributed solutes to the waters but with varying contributions. The following are the mean contributions of analyzed solute source: silicate weathering (45.1 ± 1.1%) > carbonate weathering (34.1 ± 1.6%) > evaporite dissolution (13.7 ± 2.4%) > atmospheric input (5.4 ± 0.1%) > anthropogenic input (1.7 ± 0.1%). In general, water quality was satisfactory, as the majority of samples conformed to drinking water standards. The samples had good water quality because the river solutes were not heavily affected by anthropogenic activities and were primarily controlled by rock weathering. However, localized areas of high anthropogenic impact were identified. Such locations should be prioritized for pollution control and water resource management.

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Section: Processes Controlling River Solutesmentioning

confidence: 93%

Hydrochemical Characteristics, Controlling Factors, and Solute Sources of Streamflow and Groundwater in the Hei River Catchment, China

Kou

Zhou

Hua

et al. 2019

Water

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“…[2][3][4][5][6] The essence of radiotoxicity of the phosphogypsum waste heap is not only gamma radioactivity, but very important are natural alpha radioactive elements ( 234 U, 235 U, 238 U, 226 Ra, 210 Po and also beta emitter 210 Pb), which are leached by rain and bioaccumulated in plants and animals as well as in humans. [2][3][4][5][6][7][8][9][10][11] The natural radionuclides 210 Po and 210 Pb are daughters of 238 U decay series 12 with half-lives of 138.38 days and 22.3 years, respectively. These natural radionuclides are found in varying concentrations in soil, sand, sediment and naturally occurring water and constitute an important component of the natural background radiation and contribute signicantly to the radiation dose of the population.…”

Section: Introductionmentioning

confidence: 99%

A study on lead (²¹⁰Pb) and polonium (²¹⁰Po) contamination from phosphogypsum in the environment of Wiślinka (northern Poland)

Boryło¹,

Olszewski²,

Skwarzec³

2013

Environ. Sci.: Processes Impacts

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The results of polonium ((210)Po) and lead ((210)Pb) determination in different environmental soil samples collected in the vicinity of the phosphogypsum stack in Wiślinka (northern Poland) are presented and discussed in this paper. The (210)Po and (210)Pb concentrations in soil samples from the phosphogypsum stack recorded in this study are significantly higher only in areas that are close to the heap. The relationship between atmospheric deposition and elevated analyzed radionuclides concentrations in top soil layers, especially in the vicinity of the phosphogypsum stack, was showed in this study. (210)Po and (210)Pb radionuclides were detected in concentrations which could have harmful effects on human health or the environment. The considerably high concentrations of (210)Po and (210)Pb in soil samples collected from the vicinity of the phosphogypsum stack obtained in this study can lead to the conclusion that the presently undertaken recultivation process is successful and the 300 m(2) protection zone around the phosphogypsum stack seems to be able to offset the negative influence of the phosphogypsum stack on the surrounding environment.

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“…Less than 0.05 μg of the radionuclide is considered a lethal dose (LD 50/30 ). This isotope was used to kill the Russian agent Andrei Litvinenko in 2006, by putting about 10 μg of 210 Po in his tea [ 2 , 3 ]. The 210 Po is found in varying concentration in soil, sand, sediment and naturally occurring water.…”

Section: Introductionmentioning

confidence: 99%

Polonium 210Po activities in human blood of patients with ischaemic heart disease from Gdańsk in Poland

Boryło

Skwarzec

Romańczyk

et al. 2013

J Radioanal Nucl Chem

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The determination of polonium 210Po in human blood samples is presented and discussed in this paper. The human blood samples were collected from patients of Medical University of Gdańsk with ischaemic heart disease (morbus ischaemicus cordis, MIC). The polonium concentrations in analyzed human blood samples are very differentiated. 210Po is of particular interest in public health and although is present in the environment in extremely low amounts, it is easily bioaccumulated to the human body. The study shows that the amount of 210Po that is incorporated into the human body depends on the food habits and some difference in its levels could be observed between smokers and non-smokers.

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Hydrochemistry and weathering rates on Corumbataí River basin, São Paulo State, Brazil

Cited by 8 publications

References 69 publications

Hydrochemical Characteristics, Controlling Factors, and Solute Sources of Streamflow and Groundwater in the Hei River Catchment, China

Hydrochemical Characteristics, Controlling Factors, and Solute Sources of Streamflow and Groundwater in the Hei River Catchment, China

A study on lead (²¹⁰Pb) and polonium (²¹⁰Po) contamination from phosphogypsum in the environment of Wiślinka (northern Poland)

Polonium 210Po activities in human blood of patients with ischaemic heart disease from Gdańsk in Poland

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Hydrochemistry and weathering rates on Corumbataí River basin, São Paulo State, Brazil

Cited by 8 publications

References 69 publications

Hydrochemical Characteristics, Controlling Factors, and Solute Sources of Streamflow and Groundwater in the Hei River Catchment, China

Hydrochemical Characteristics, Controlling Factors, and Solute Sources of Streamflow and Groundwater in the Hei River Catchment, China

A study on lead (210Pb) and polonium (210Po) contamination from phosphogypsum in the environment of Wiślinka (northern Poland)

Polonium 210Po activities in human blood of patients with ischaemic heart disease from Gdańsk in Poland

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A study on lead (²¹⁰Pb) and polonium (²¹⁰Po) contamination from phosphogypsum in the environment of Wiślinka (northern Poland)