Mines gases And their Physiological Effects 2.

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Permissible Limit of Mines Gases

1.Nitrous Fumes
It gets converted in to Nitrogen oxides in presence of moisture.

Source- Blasting of nitroglycerin based explosives and diesel engines are also the sources of nitrous fumes.

Physiological Effects:-
The presence of Nitrogen oxide in mines causes irritation of eyes, nose, throat and also to the other mucous membrane of body.
Due to this the coughing and the pen is happened in chest.
It has acidic nature and due this the corrosion of lungs membrane is natural.
*This corrosion may lead to death.

Detection:- Drager Multigas Detector detects the oxides of Nitrogen.

2.Hydrogen Sulphide
It is extremely toxic even in small percentage.
The sources of hydrogen sulphide Ares gob fire in coal mines(if coal contains sulphur),
action of acidic water on iron pyrite and blasting in sulphur mines.

Physiological effects:- At
50-100ppm:- Irrigation and inflammation of eyes and respiratory tracks.
200-700:- Causes pain in chest and throat.

Detection:-
It can easily be detected due to rotten egg like smell.

Hydro-carbons:-
The main sources are diesel engines.

*It causes coughing. As they are carcinogenic, it may cause cancer.





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