Changing profile of natural organic matter in groundwater of a ramsar site in Kerala implications for sustainability

Abstract

This investigation examined changes in natural organic matter (NOM), in shallow and deep aquifers, in Kerala, India, known for its abundant water resources and biodiversity. The varying profile of NOM was determined by tracking Total and Dissolved Organic Carbon, UV light absorbance, Specific UV absorbance, Fluorescence and Fourier Transform Infrared spectroscopy, and Nuclear magnetic resonance. This investigation revealed the presence of hydrocarbons derived from petroleum products in shallow aquifer samples due to anthropogenic activities. Fluoridated NOM components above permissible limits from deep aquifers indicated the aftermath of geogenic processes. The presence of tyrosine and tryptophan-like fractions portend the presence of microbial activity.

Keywords

• Dissolved organic carbon
• Natural organic matter
• Specific UV absorbance
• Total organic carbon
• UV light Absorbance