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

Mercury (Hg) speciation in coral reef systems of remote Oceania: Implications for the artisanal fisheries of Tutuila, Samoa Islands

“…Leopold et al (2010) present a major review of speciation measurement methods in natural waters while Chakraborty et al (2014a) present review sediment speciation methods. Chakraborty et al (2014b) were also able to identify the importance of organic carbon in sediments and in the overlying water on Hg sequestration in sediments in India.…”

Kinetic speciation and bioavailability of copper and nickel in mangrove sediments

“…Phenomena like sorption, co-precipitation, complexation with trace metals are more prevalent with finer particles with more surface area (Chakraborty et al, 2014a;Chakraborty et al, 2014b) and probably the cause of higher metals concentrations in the finer particles of the mangrove sediments. Strong positive correlation between the fine particles (silt, clay) TOC and TN (R 2 = 0.99 and 0.98) content in the mangrove sediments indicate that there was high sorption and affinity of organic carbon on finer particles in aquatic system (Hedges and Keil, 1995).…”

“…Further kinetic extraction study was carried out to understand Ni and Cu-speciation in the mangrove sediments by using a published protocol (Chakraborty et al, 2014b).…”

Environmental controls on the speciation and distribution of mercury in surface sediments of a tropical estuary, India

“…The reagents used in this study were of analytical grade or better (ultrapure). The protocol has been vividly described in the literature (Chakraborty et al, 2014a(Chakraborty et al, , 2014b(Chakraborty et al, , 2014c. The concentrations of Hg in each extracted solutions and in residual fractions were determined by Direct Mercury Analyzer.…”

“…Strong affinity of Hg to natural particles helps this toxic metal to ultimately settles down and accumulate in sediments (Chakraborty et al, 2014a(Chakraborty et al, , 2014b(Chakraborty et al, , 2014c(Chakraborty et al, , 2014d(Chakraborty et al, , 2012a. Thus, sediments act as a major sink for Hg.…”