Environmental risk assessment is an estimate of the likelihood or probability of an adverse impact on the environment resulting from human activities such as applying of pesticides against of target pests (insects, plant pathogens, weeds, nematodes, microbes, mollusks, birds, mammals, fish and so on) in the agriculture. Since the Withdrawal of organochlorine pesticides from use, organophosphorus pesticides (OPs) have become the most widely used pesticides available today in the entire world especially in the Iran. The use of OPs has a number of health advantages, including control of insect vector borne diseases and increasing the food and agriculture productions. However, the use of these toxic compounds on man, animals or in his immediate environment has caused potential hazards that seriously are baneful for public health. There has been increasing awareness and concern on the part of food and health officials and of the dairy industry about the presence OPs in milk and other milk products. In this article, we reviewed some printed articles about OP poisoning and its management.

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