The Supreme Court ban on the use of antimony, lithium, mercury, arsenic and lead in the manufacture of firecrackers to prevent air pollution has turned the focus on what chemicals are used to produce spectacular visual effects and noise.
Concern over firecracker
No standards have been laid down by the Central Pollution Control Board (CPCB) with regard to air pollution caused by the bursting of firecrackers.
Effect of firecracker
- Aluminium powder, sulphur and potassium nitrate go into noise-making crackers, while barium nitrate (green) and strontium nitrate (red) emit light.
- Aluminium powder is used in sparklers.
- Chinese crackers, which use chlorate are, therefore, banned in India.
- Colours in FIRECRACKER
Red Strontium salts (Nitrates, carbonates and sulphates of strontium) Orange Calcium salts (Carbonates, chlorides and sulphates of calcium) Yellow Sodium salts ( Nitrates and oxalates of sodium) Green Barium salts (Nitrates, carbonates, chlorides and chlorates of barium) Blue Copper salts (Carbonates and oxides of copper) Purple A combination of copper and strontium compounds White he burning of metals like magnesium, aluminium and titanium)
Source : The Hindu
GS II : Issues relating to development and management of Social Sector/Services relating to Health, Education, Human Resources, issues relating to poverty and hunger.