| Pollutants |
Major Sources |
Effect on human health |
Permissible Level
(ppm) |
| Arsenic |
Pesticides, fungicides, metal smelters |
Bronchitis, dermatitis |
0.02 |
| Cadmium |
Welding, electroplating, pesticide fertilizer CdNi batteries, nuclear fission plant |
Kidney damage, bronchitis, gastrointestinal disorder, bone marrow, cancer |
0.06 |
| Lead |
Paint, pesticide, smoking, automobile emission, mining, burning of coal |
Liver, kidney, gastro intestinal damage, mental retardation inchildren |
0.1 |
| Manganese |
Welding, fuel addition, ferromanganese production |
Inhalation or contact causes damage to central nervous system |
0.26 |
| Mercury |
Pesticides, batteries, paper industry |
Damage to nervous system, protoplasm poisoning |
0.01 |
| Zinc |
Refineries, brass manufacture, metal plating, plumbing |
Zinc fumes have corrosive effect on skin, cause damage to nervous membrane |
15 |
|
