<P> As of 2010, the quantities of foods irradiated in Asia, the EU and the US were 285,200, 9,300, and 103,000 tons . Authorities in some countries use tests that can detect the irradiation of food items to enforce labeling standards and to bolster consumer confidence . The European Union monitors the market to determine the quantity of irradiated foods, if irradiated foods are labeled as irradiated, and if the irradiation is performed at approved facilities . </P> <P> Irradiation of fruits and vegetables to prevent the spread of pest and diseases across borders has been increasing globally . In 2010, 18,446 tonnes of fruits and vegetables were irradiated in six countries for export quarantine control . 97% of this was exported to the United States . </P> <P> In total, 103 000 tonnes of food products were irradiated on mainland United States in 2010 . The three types of foods irradiated the most were spices (77.7%), fruits and vegetables (14.6%) and meat and poultry (7.77%). 17 953 tonnes of irradiated fruits and vegetables were exported to the mainland United States . Mexico, the United States' state of Hawaii, Thailand, Vietnam and India export irradiated produce to the mainland U.S. Mexico, followed by the United States' state of Hawaii, is the largest exporter of irradiated produce to the mainland U.S. </P> <P> In total, 6 876 tonnes of food products were irradiated in European Union countries in 2013; mainly in four member state countries: Belgium (49.4%), the Netherlands (24.4%), Spain (12.7%) and France (10.0%). The two types of foods irradiated the most were frog legs (46%), and dried herbs and spices (25%). There has been a decrease of 14% in the total quantity of products irradiated in the EU compared to the previous year 2012 (7 972 tonnes). </P>

Describe the effect of exposure time on radiation production