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Related Concept Videos

Volatilization01:10

Volatilization

386
Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
386
Voltammetry: Stripping Methods01:13

Voltammetry: Stripping Methods

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Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
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Overview of Metabolism01:40

Overview of Metabolism

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Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
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Bioremediation00:46

Bioremediation

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Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
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Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
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Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
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Selenium volatilization in plants, microalgae, and microorganisms.

Feng Wang1,2, Jie Zhang1, Ling Xu1,2

  • 1School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.

Heliyon
|February 23, 2024
PubMed
Summary
This summary is machine-generated.

Selenium (Se) pollution from human activities poses environmental hazards. This review highlights Se volatilization by plants, microalgae, and microorganisms as a promising mitigation strategy, especially using constructed wetlands.

Keywords:
MicroalgaeMicroorganismsPlantsSeleniumVolatilizationWetland ecosystems

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Area of Science:

  • Environmental Science
  • Bioremediation
  • Geochemistry

Background:

  • Elevated selenium (Se) levels from industrial and agricultural activities cause environmental pollution.
  • While essential in trace amounts, excessive Se poses risks to ecosystems and human health.
  • Current mitigation strategies include physicochemical methods and bioremediation.

Purpose of the Study:

  • To review selenium volatilization as a pollution mitigation strategy.
  • To explore volatilization mechanisms across diverse organisms (plants, microalgae, microbes).
  • To provide recommendations for Se mitigation based on efficacy and rate-limiting factors.

Main Methods:

  • Literature review of Se volatilization mechanisms and efficacy.
  • Analysis of Se fate, behavior, bioavailability, and toxicity in environmental systems.
  • Assessment of constructed wetlands as a Se volatilization treatment approach.

Main Results:

  • Se volatilization by plants, microalgae, and microorganisms is a viable pollution control method.
  • Understanding organism-specific mechanisms and rate-limiting steps is crucial for optimizing Se removal.
  • Constructed wetlands offer a cost-effective, eco-friendly solution for Se volatilization treatment.

Conclusions:

  • Se volatilization presents a significant biological approach to mitigate Se contamination.
  • Further research into optimizing volatilization processes and understanding Se's environmental behavior is needed.
  • Implementing Se volatilization strategies, particularly in constructed wetlands, can protect ecosystems.