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Related Concept Videos

The Nitrogen Cycle01:49

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Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...
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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.
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Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
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Updated: May 6, 2026

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Nitrogen-plastic bag suicide: a case report.

Maria S Madentzoglou1, Anastasia E Kastanaki, Despoina Nathena

  • 1From the *Department of Forensic Sciences, Faculty of Medicine, University of Crete; and †State Mental Health Hospital of Chania, Crete, Greece, ‡Edinburgh Unit for Forensic Anthropology, SHCA, University of Edinburgh, Scotland, United Kingdom.

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Suicide using pure nitrogen gas is increasing. This method causes death by asphyxiation due to environmental hypoxia, a dangerous lack of oxygen.

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Area of Science:

  • Forensic Pathology
  • Toxicology

Background:

  • Nitrogen gas asphyxiation is an emerging method of suicide.
  • Past cases involved nitrogen oxide fumes, but pure nitrogen is now more prevalent.

Observation:

  • A case report details a 26-year-old man's suicide using nitrogen gas inhalation via a plastic bag.
  • The method is described online, indicating potential for wider adoption.

Findings:

  • Death is caused by asphyxia resulting from rapid oxygen depletion.
  • This phenomenon is classified as environmental hypoxia.

Implications:

  • Increased popularity of nitrogen gas suicide necessitates awareness among medical and forensic professionals.
  • Online resources detailing suicide methods require monitoring and potential intervention strategies.