Prevalence and Ecotoxicological significance of heavy metals in sediments of lower stretches of the Hooghly estuary, India
Journal Title: International Journal of Experimental Research and Review - Year 2019, Vol 19, Issue 2
Abstract
The concentration and distribution of selected eight heavy metals in five stations from lower stretches of the Hooghly estuary were studied to ascertain the level of anthropogenic contaminant loading resulting from the development of the region. Atomic absorption spectroscopy showed that the mean concentration of Fe, Zn, Cu, Ni, Pb, Cr, Cd and As (mg kg-1, dry weight,) ranged from 29950.70 – 39567.94, 61.45 – 98.83, 40.65 – 54.46, 25.44 – 42.78, 36.93 – 48.56, 29.07 – 46.35, BDL – 3.48 and 1.18 – 6.44 respectively. Pollution load index (PLI) and Index of geoaccumulation (Igeo) revealed overall low values but the enrichment factors (EFs) for Cd was typically high for three of the stations. Calculations based on Effect Range Low (ERL) and Threshold Effect Level (TEL) showed that the mean concentration of Cu, Ni and Cd and to some extent Pb exceeded these levels, indicating that there is chance of ecotoxicological effects on benthic organisms dwelling in this region. Inter-elemental relationship and cluster analysis revealed identical behavior of the elements during transport and distribution. The study will help to further the cause of environmental protection of this sensitive biorealm in conjunction with the need for development of the region.
Authors and Affiliations
Debargha Chakraborty; Dipanwita Das; Alok Chandra Samal; Subash Chandra Santra
Study on segmentation and prediction of lung cancer based on machine learning approaches
Lung cancer is a dangerous disease in human health. At the early stage, lung cancer detection provides a way to save human life. As a result, improvements in Deep Learning (DL), a technique, a branch of Machine Learning...
Nitrogen fixing Cyanobacterial flora of Nadia District in West Bengal, India
Cyanobacteria play an important role in maintenance and build-up of soil fertility, consequently increase rice growth and yield as a natural bio fertilizer. The paddy field ecosystem provides a favourable environment for...
Corporate Sustainability with Forensic Auditing: An Evidence from India
The repercussions of fraud are huge and sufferers are many. An organisation's very existence and sustainability of an organisation is threatened by frauds, which remain unchecked due to weak corporate governance norms an...
An investigation of lead in urban environment of Kolkata city, India
The lead heavy metal is an important environmental pollutant particularly in the urban areas with high anthropogenic pressure like vehicular and industrial. Its presence in the atmosphere, soil, water and biological syst...
Analysis of Noise Level with Convergent and Divergent Shape of Muffler and its Impact on Noise Pollution
Noise pollution is one of the key hazards that decreases people's quality of life globally. Due to the rapid development of technology, industrialization, urbanization, and transportation networks, noise pollution has re...