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Related Concept Videos

Overview of Nitrogen Metabolism01:20

Overview of Nitrogen Metabolism

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Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of  ammonia, ammonium ions, nitrate, nitrite, or  nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
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Metabolism of Chemolithotrophs01:15

Metabolism of Chemolithotrophs

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Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
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1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism01:37

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism

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Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.
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2° Amines to N-Nitrosamines: Reaction with NaNO201:20

2° Amines to N-Nitrosamines: Reaction with NaNO2

4.1K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
4.1K
Physical Properties of Amines01:26

Physical Properties of Amines

3.0K
Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.
3.0K
Diazonium Group Substitution: –OH and –H01:19

Diazonium Group Substitution: –OH and –H

2.7K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
2.7K
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  11. Effects Of Ammonium Sulfate On The Degradation And Metabolism Of Dinotefuran In Soil: Evidence From Soil Physicochemical Properties And Bacterial Community Structure.
  1. Home
  3. Research Domains
  5. Environmental Sciences
  7. Soil Sciences
  9. Soil Physics
  11. Effects Of Ammonium Sulfate On The Degradation And Metabolism Of Dinotefuran In Soil: Evidence From Soil Physicochemical Properties And Bacterial Community Structure.

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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

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Effects of ammonium sulfate on the degradation and metabolism of dinotefuran in soil: Evidence from soil physicochemical properties and bacterial community structure.

Pengxi Li1, Wangjing Zhai1, Qiqi Guo1

  • 1Department of Applied Chemistry, College of Science, China Agricultural University, No. 2, West Yuanmingyuan Road, Beijing 100193, People's Republic of China.

The Science of the Total Environment
|October 5, 2024

View abstract on PubMed

Summary
This summary is machine-generated.
Keywords:
Ammonium sulfateDegradationDinotefuranMicrobial community

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Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff

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Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers
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Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

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Related Experiment Videos

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
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Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

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Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers
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Ammonium sulfate addition significantly slows dinotefuran pesticide degradation in soil by altering microbial communities and soil properties. This co-exposure increases pesticide persistence, posing environmental risks.

Area of Science:

  • Environmental Chemistry
  • Soil Science
  • Microbiology

Background:

  • Ammonium sulfate and dinotefuran are common agricultural inputs.
  • Limited data exists on their combined environmental impact.
  • Understanding co-exposure effects is crucial for risk assessment.

Purpose of the Study:

  • To investigate how ammonium sulfate affects dinotefuran degradation in soil.
  • To identify dinotefuran metabolites under co-exposure.
  • To explore the mechanisms behind these effects, including impacts on soil properties and microbial communities.

Main Methods:

  • Dinotefuran degradation and metabolite formation were monitored in four soil types.
  • Soil physicochemical properties (pH, organic matter) were analyzed.
  • Soil microbial community structure and abundance were assessed using sequencing.
  • Partial least squares structural equation modeling (PLS-SEM) was used to analyze relationships.

    • Main Results:

    • Ammonium sulfate significantly extended dinotefuran's half-life (1.70-5.05 times longer).
    • Co-exposure reduced dinotefuran metabolite content and altered their profiles.
    • Significant changes in bacterial community structure, including reduced abundance of key phyla, were observed.
    • Decreased soil pH and organic matter content correlated negatively with dinotefuran degradation.

    Conclusions:

    • Ammonium sulfate impedes dinotefuran degradation by altering soil microbial communities and physicochemical properties.
    • Reduced soil microbial diversity and changes in specific bacterial phyla are linked to slower pesticide breakdown.
    • Findings highlight potential environmental risks of co-applying ammonium sulfate and dinotefuran.