Four new man-made gases that are contributing to the depletion of the ozone layer

According to the BBC news, scientists have identified four new man-made gases that are contributing to the depletion of the ozone layer.

Two of the gases are accumulating at a rate that is causing concern among researchers.

Worries over the growing ozone hole have seen the production of chlorofluorocarbon (CFC) gases restricted since the mid 1980s.

But the precise origin of these new, similar substances remains a mystery.

Three of the ozone damaging gases are CFCs and one is a hydrochlorofluorocarbon (HCFC).

The Mysterious gases are:

•  CFC-112, CFC112a, CFC-113a, HCFC-133a
• CFC-113a has been listed as an "agrochemical intermediate for the manufacture of pyrethroids", a type of insecticide once widely used in agriculture
• CFC-113a and HCFC-133a are intermediaries in the production of widely used refrigerants
• CFC-112 and 112a may have been used in the production of solvents used to clean electrical components

Read more at the link below:

http://www.bbc.com/news/science-environment-26485048