Leachability of Various Xenobiotics Through Lysimetric Studies

Abstract

Groundwater is one of the most important water resources which are always impacted by industry, agriculture, mining, and other human activities. Risk assessment of groundwater contamination is an effective way to protect groundwater resources. The water used for drinking purpose should be free from any toxic elements, living and nonliving organism and excessive amount of minerals that may be hazardous to health. Risk assessment of groundwater contamination is an effective way to protect groundwater resources. A new advanced technique of lysimeter experiments has been developed which involves systematic methodology to combine both quantitative and qualitative input of risk factors. The experiments were conducted to assess the leachability of various xenobiotics through soil using lysimeter. Soil samples were collected from the banks of Yamuna river located at Noida area in Uttar Pradesh, India. A column or Lysimeter test has been used for simulation of leaching. 7 days leachate was collected, filtered and was preserved for analysis. Three1000PPM Lysimeters were setup to study the leaching of Phthalates, TiO2 and Chromium. 126 Leachate samples have been extracted according to standard procedure. 72 soil samples have been extracted according to standard procedure. Different Physico Chemical Parameters of the Leachate like pH, Electrical conductivity, TDS etc. were analysed during each set of experiments. Ti, Cr are analysed using ICPMS. Gas Chromatography was used to determine the Bis(2ethylhexyl) Phthalate. Further detailed studies have to be carried out to understand the nano particle leaching and its effect on groundwater contamination. Combination of both experimental and model results clearly indicates the risk of contamination by phthalate in both soil and groundwater. The integrated approach allows us to understand the behavior of contaminant leaching in various soil conditions, which is essential to define strategies for the prevention of groundwater contamination.