Spatial budgetary evaluation of organochlorine contaminants in the sediments of Cochin Estuary, India

Abstract

a b s t r a c tThis paper presents the first detailed investigation on the residual levels of organochlorine insecticide (OCI) concentrations in the Cochin estuarine sediment. It aims in elucidate their distribution and ecological impact on the aquatic system. Concentrations of persistent organochlorine compound (OC) were determined for 17 surface sediment samples which were collected from specific sites of Cochin Estuarine System (CES) over a period of November 2009 and November 2011. The contaminant levels in the CES were compared with other worldwide ecosystems. The sites bearing high concentration of organochlorine compounds are well associated with the complexities and low energy environment. Evaluation of ecotoxicological factors suggests that adverse biological effects are expected in certain areas of CES.

Perennial Existence of Organochlorine Pesticides in the Soils of Amghara, Kuwait

“…The rest all the stations the level of Aldrin is quite low. Aldrin has the a nity for the swift conversion in to Dieldrin (Akhil and Sujatha, 2014). The present data of Aldrin and dieldrin follows the quick conversion rate of Aldrin to dieldrin.…”

Legacy and new chlorinated persistent organic pollutants in the rivers of south India: Occurrences, sources, variations before and after the outbreak of the COVID-19 pandemic

“…Several perennial and non-perennial rivers in India are loaded with POPs before emptying into the Arabian Sea ( Pandit et al, 2002 , Pandit et al, 2006 ) or the Bay of Bengal ( Chakraborty et al, 2016a , Khuman and Chakraborty, 2019 ). Rain-fed rivers such as Periyar River (PR) and Bharathappuzha River (BR) in Kerala and Adyar River (AR) and Cooum River (CR) in Tamil Nadu are consistently affected by various water quality-related problems due to vast industrial and anthropogenic activities ( Akhil and Sujatha, 2014 , Dsikowitzky et al, 2014 ). During the COVID-19 pandemic, the water quality index of freshwater bodies in India has improved ( Patel et al, 2020 ).…”