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Consumer concerns on food safety and society awareness of chemical contaminants in the environment have increased in the past few years. As a consequence, more restrictions in the use of chemical products have been imposed at national and international levels. Pesticides are widely used for the control of weeds, diseases, and pests of cultivated plants all over the world, mainly since after Second World War, with the discovery of some organic compounds with good insecticide or herbicide activity. At present, around 2.5 million tons of pesticides are used annually and the number of registered active substances is higher than 500 | Analysis of Pesticides in Food and Environmental Samples 2007 by Taylor Francis Group LLC. 2007 by Taylor Francis Group LLC. Analysis of Pesticides in Food and Environmental Samples Edited by José L. Tadeo wdjC CRC Press Ạ J Taylor . Francis Group Boca Raton London New York CRC Press is an imprint of the Taylor Francis Group an informa business 2007 by Taylor Francis Group .