Assist. Prof. Wapakorn Siriwong Ph.D. is a lecturer in Department of Natural Resources and Environment, Faculty of Agriculture, Natural Resources and Environment, Naresuan University, Phitsanulok, Thailand. She obtained her Ph.D. in Environmental Technology and Management from Asian Institute of Technology, Thailand; M.S. in Agronomy from Kasetsart University, Thailand; and B.A. in Division of Soil Science and Conservation from Faculty of Agriculture, Chiang Mai University, Thailand. She is an expert in soil, environmental chemistry in soil, the behavior of pollutants, types of pesticides and heavy metals in soil and on plants, soil quality index, the compounding effect of pollutant types of pesticides and heavy metals on soil quality and adsorption behavior and movement of heavy metals and pollutants are substances in soil categories apply to enemies.