Environmental impact of agricultural land contamination of organochlorine and organophosphorus pesticides, Isfahan metropolis
Subject Areas :سامان KHabazi 1 , فرید Moor 2 , بهنام Keshavarzi 3 , مریم Kermani 4
1 - کارشناس ارشد زمین شناسی زیست محیطی دانشگاه شیراز
2 - استاد گروه علوم زمین دانشگاه شیراز
3 - استادیار گروه علوم زمین دانشگاه شیراز
4 - کارشناس پژوهشی اداره کل محیط زیست اصفهان
Keywords: soil, water, concentration, Pesticide, Isfahan, organochlorin, organophosphorus,
Abstract :
Use of pesticides is a common practice in agriculture nowadays and indeed most pesticides are overused. Twomajor groups of pesticides are organochlorin and organophosphorus. In this study 13 surface soil and 10 surfaceand groundwater samples were collected in winter 1390 and spring 1391 within a radius of 60 Kms from thecenter of Isfahan metropolis. The measured concentrations of 8 organochlorin and 9 organophosphorus pesticidein the collected water samples indicate that all fall below the maximum recommended level and pose no threatto the environment. However, results from soil samples revealed that among the organochlorides theconcentration of DDT metabolites i.e combined DDE and DDD concentration is rather high. The concentrationof organophosphorus pesticide in soil depends upon several factors including, degradation half life and theamount of used pesticide. The concentration of residual organophosphor pesticide in soil is above recommendedsafe values.