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Related Concept Videos

Hypoxia01:23

Hypoxia

Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Hemoglobin01:24

Hemoglobin

Hemoglobin is a globular protein made up of four subunits. Two of these subunits are alpha chains, and the other two are beta chains. Each subunit contains a molecule of heme, which has an iron atom and can bind to oxygen. When an oxygen molecule binds to one heme group, it changes the shape of hemoglobin, making it easier for the other heme groups to bind oxygen as well.
When all four heme groups are bound to oxygen, the resulting molecule is called oxyhemoglobin. As a result, arterial blood...
Autoxidation of Ethers to Peroxides and Hydroperoxides02:23

Autoxidation of Ethers to Peroxides and Hydroperoxides

Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
Flame Photometry: Lab01:16

Flame Photometry: Lab

In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...

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Related Experiment Video

Updated: Jul 14, 2026

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K
06:45

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K

Published on: January 11, 2019

Methaemoglobinaemia: an explosive case.

Steven T Galluccio1, Nicholas A Edwards, David Ge Caldicott

  • 1Intensive Care Unit, Royal Adelaide Hospital, Adelaide, SA, Australia. gallucciotti@yahoo.com.au

Critical Care and Resuscitation : Journal of the Australasian Academy of Critical Care Medicine
|June 1, 2007
PubMed
Summary

Methaemoglobinaemia, a dangerous blood condition, can lead to severe hypoxia if untreated. This case highlights an unusual cause of methaemoglobinaemia acquired during an industrial explosion.

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Last Updated: Jul 14, 2026

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K
06:45

Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K

Published on: January 11, 2019

Measurement of Heme Synthesis Levels in Mammalian Cells
09:43

Measurement of Heme Synthesis Levels in Mammalian Cells

Published on: July 9, 2015

Biochemical Measurement of Neonatal Hypoxia
13:13

Biochemical Measurement of Neonatal Hypoxia

Published on: August 24, 2011

Area of Science:

  • Toxicology
  • Occupational Health
  • Emergency Medicine

Background:

  • Methaemoglobinaemia is a potentially life-threatening condition characterized by elevated levels of methemoglobin in the blood.
  • Untreated methaemoglobinaemia can result in severe tissue hypoxia, leading to cellular damage and potentially death.
  • Recognition and prompt management are crucial for favorable patient outcomes.

Observation:

  • A case of acquired methaemoglobinaemia is presented.
  • The condition was acquired through an unusual exposure route.
  • The exposure occurred during an incident at an explosives manufacturing plant.

Findings:

  • The patient developed methaemoglobinaemia following an industrial explosion.
  • This represents an uncommon mechanism for acquiring the condition.
  • The specific causative agent from the explosion requires further investigation.

Implications:

  • This case underscores the importance of considering methaemoglobinaemia in patients with exposure to industrial chemicals, particularly following explosions.
  • It highlights the need for heightened awareness among occupational health professionals and emergency responders.
  • Further research into the toxicological profiles of explosive manufacturing materials is warranted.