Browsing by Author "Babu, P.V.R."
Now showing items 1-12 of 12
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A multi-method approach for the study of lanthanum speciation in coastal and estuarine sediments
Chakraborty, P.; Babu, P.V.R.; Sarma, V.V. (Elsevier, 2011)Two independent analytical methods (sequential extraction and kinetic extraction methods) were applied in order to understand the distribution and speciation of La in the coastal and estuarine sediments from the central ... -
A study of lead and cadmium speciation in some estuarine and coastal sediments
Chakraborty, P.; Babu, P.V.R.; Sarma, V.V. (Elsevier, 2012)Chemical speciation of lead (Pb) and cadmium (Cd) in the coastal and estuarine sediments along the central east coast of India was studied by applying sequential and kinetic extraction methods. The results of this study ... -
Environmental controls on the speciation and distribution of mercury in surface sediments of a tropical estuary, India
Chakraborty, P.; Babu, P.V.R. (Elsevier, 2015)Distribution and speciation of mercury (Hg) in the sediments from a tropical estuary (Godavari estuary) was influenced by the changing physico-chemical parameters of the overlying water column. The sediments from the ... -
Impact of salinity and pH on phytoplankton communities in a tropical freshwater system: An investigation with pigment analysis by HPLC
Chakraborty, P.; Acharyya, T.; Babu, P.V.R.; Bandyopadhyay, D. (The Royal Society of Chemistry, 2011)An in vitro study was carried out to understand the effects of salinity shock and variation in pH on phytoplankton communities in a tropical freshwater system of the Godavari River (a major peninsular river in India). The ... -
Impact of total organic carbon (in sediments) and dissolved organic carbon (in overlying water column) on Hg sequestration by coastal sediments from the central east coast of India
Chakrabortya, P.; Sharma, B.M.; Babu, P.V.R.; Yao, K.M.; Jaychandran, S. (Elsevier, 2014)Total organic carbon (TOC) (in sediment) and dissolved organic matter (DOM) (in water column) play important roles in controlling the mercury sequestration process by the sediments from the central east coast of India. ... -
Influence of river discharge on plankton metabolic rates in the tropical monsoon driven Godavari estuary, India
Sarma, V.V.S.S.; Gupta, S.N.M.; Babu, P.V.R.; Acharyya, T.; Harikrishnachari, N.; Vishnuvardhan, K.; Rao, N.S.; Reddy, N.P.C.; Sarma, V.V.; Sadhuram, Y.; Murty, T.V.R.; Kumar, M.D. (Elsevier, 2009)To examine the influence of river discharge on plankton metabolic balance in a monsoon driven tropical estuary, daily variations in physico-chemical and nutrients characteristics were studied over a period of 15 months ... -
Interactions of mercury with different molecular weight fractions of humic substances in aquatic systems.
Chakraborty, P.; Yao, K.M.; Chennuri, K.; Vudamala, K.; Babu, P.V.R. (Springer, 2014)Interactions of mercury (Hg) with different molecular weight fractions of humic substances (HS) play an important role in controlling distribution, diffusion, speciation, and bioavailability of Hg in natural systems. This ... -
Intra-annual variations of arsenic totals and species in tropical estuary surface sediments
Chakraborty, P.; Jayachandran, S.; Babu, P.V.R.; Karri, S.; Tyadi, P.; Yao, K.M.; Sharma, B.M. (Elsevier, 2012)Arsenic totals and species were found to vary during a one year period in the surface sediments of Godavari estuary (the third largest river in India). This study suggests that increasing salinity of overlying water column ... -
Mercury speciation in coastal sediments from the central east coast of India by modified BCR method.
Chakraborty, P.; Babu, P.V.R.; Vudamala, K.; Ramteke, D.; Chennuri, K. (Elsevier, 2014)This is the first study to describe distribution and speciation of Hg in coastal sediments from the central east coast of India. The concentrations of Hg in the studied sediments were found to be much lower than the Hg ... -
Stress and toxicity of biologically important transition metals (Co, Ni, Cu and Zn) on phytoplankton in a tropical freshwater system: An investigation with pigment analysis by HPLC
Chakraborty, P.; Babu, P.V.R.; Acharyya, T.; Bandyopadhyay, D. (Elsevier, 2010)Stress and toxicity of four biologically important transition metals (Co, Ni, Cu and Zn) on phytoplankton in Godavari River (a tropical freshwater system) were studied to understand the fate of phytoplankton of freshwater ... -
The response of a natural phytoplankton community from the Godavari River Estuary to increasing CO2 concentration during the pre-monsoon period
Biswas, H.; Cros, A.; Yadav, K.; Ramana, V.V.; Prasad, V.R.; Acharyya, T.; Babu, P.V.R. (Elsevier, 2011)The effects of increasing CO sub(2) concentrations on a natural phytoplankton assemblage in a tropical estuary (Godavari, India) is reported. Two short-term (5-day) bottle experiments were conducted (with and without ... -
Ultrafiltration technique in conjunction with competing ligand exchange method for Ni–humics speciation in aquatic environment
Chakraborty, P.; Boissel, M.; Reuillon, A.; Babu, P.V.R.; Parthiban, G. (Elsevier, 2013)The combination of ultrafiltration technique with competing ligand exchange method provides a better understanding of interactions between Ni and different molecular weight fractions of humic acid (HA) at varying pH in ...