Persistent Organic Pollutants are organic chemical substances those persist in the environment and pose a risk of adverse effects to human health and environment. These are global pollutant, due to their longer life, and migrate over long distances. Most POPs generated in one country can and do affect people and wildlife far from where they are used and released. They persist for long periods of time in the environment and can accumulate and pass from one species to the next through the food chain. Considering their global impact, multilateral environmental agreement (United Nations treaty) is signed in Stockholm, Sweden, in May 2001 to reduce or eliminate the production, use, and/or release of 12 key POPs. More details on POPs will discusses during the presentation.