Is carbazole a PAH?

Is carbazole a PAH?

There are several hundred PAHs; the best known is benzo[a]pyrene (BaP). In addition a number of heterocyclic aromatic compounds (e.g. carbazole and acridine), as well as nitro-PAHs, can be generated by incomplete combustion (1).

What is the difference between polynuclear and polycyclic aromatic hydrocarbons?

The key difference between polycyclic and polynuclear aromatic hydrocarbons is that the term polycyclic aromatic hydrocarbons describes the presence of two or more cyclic structures fused to each other whereas the term polynuclear aromatic hydrocarbons describes the presence of more than one atom.

What are PAHs made of?

PAHs are organic substances made up of carbon and hydrogen atoms grouped into at least two condensed or fused aromatic ring structures (CCME, 2010).

What do PAHs do to humans?

PAHs generally have a low degree of acute toxicity to humans. The most significant endpoint of PAH toxicity is cancer. Increased incidences of lung, skin, and bladder cancers are associated with occupational exposure to PAHs.

What is PAH chemical?

Polycyclic aromatic hydrocarbons (PAHs) are a class of chemicals that occur naturally in coal, crude oil, and gasoline. They also are produced when coal, oil, gas, wood, garbage, and tobacco are burned. PAHs generated from these sources can bind to or form small particles in the air.

Is quinoline a PAH?

Quinoline is part of a larger class of chemicals called polycyclic aromatic compounds (PACs). This class of compounds also includes well-known polycyclic aromatic hydrocarbons (PAHs), but quinoline contains nitrogen and is therefore not a PAH.

What are polynuclear hydrocarbons give two examples?

There are numerous examples of polynuclear aromatic hydrocarbons….Examples of these molecules include:

  • anthracene.
  • phenanthrene.
  • tetracene.
  • chrysene.
  • pyrene (note: benzo[a]pyrene was the first carcinogen to be discovered)
  • pentacene.
  • corannulene.
  • coronene.

What is PAH environmental?

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental pollutants generated primarily during the incomplete combustion of organic materials (e.g. coal, oil, petrol, and wood).

What are PAH pollutants?

What is PAH example?

The following are examples of PAHs that vary in the number and arrangement of their rings:

  • Examples of polycyclic aromatic hydrocarbons.
  • Naphthalene.
  • Biphenyl.
  • Fluorene.
  • Anthracene.
  • Phenanthrene.
  • Phenalene.
  • Tetracene.

Which among these is the simplest example for polynuclear hydrocarbon *?

So, the correct answer is naphthalene ( option-b )