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Persistent organic pollutants(POPS) are compounds that are resistant to degrade. They are organic pollutants. They have chemical, biological and photolytic processes. These pollutants have hazardous effect on human health and on the biological environment. Persistent organic pollutants are halogenated organic compounds. they gather in fatty tissues. They can transfer easily in any part of the world inside the human or animal body or in any agriculture product. The effect of POPs include harmful effects on human health and bio environment. It was decided to eliminate and severely restrict their production, by the international community at the Stockholm Convention on Persistent Organic Pollutants in 2001,

In 1995, United Nations Environment Programme (UNEP) called for global action to be taken on POPs, which it defined as “chemical substances that persist in the environment, bio-accumulate through the food web, and pose a risk of causing adverse effects to human health and the environment”.
This convention address only those agents that are present in environment for very long and are subject to long run environmental transport. That can transfer thousands of mile by air or water.
This agreement categorizes different pesticides on the bases of their chemical composition and toxicity.
A —- very dangerous
B —- less dangerous
C —- use somewhere in the world but not identified
BASEL AGREEMENT was signed after the Basel convention. This agreement emphasizes on the prevention of dumping waste in sea. this agreement restricted the transboundary movements of hazardous waste. After this convention many centers for training and technology transfer were established to make countries aware about the management and minimization of hazardous waste.

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