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Introduction
Mixture risk assessment of Developmental Neurotoxicants
Additional affiliations
September 2020 - present
June 2013 - August 2013
May 2005 - April 2013
Publications
Publications (40)
Pesticides are omnipresent, and they pose significant environmental and health risks. Translational studies indicate that acute exposure to high pesticide levels is detrimental, and prolonged interaction with low-level pesticides, as single and cocktail, could represent a risk factor for multi-organ pathophysiology, including the brain. Within this...
To support a mixture risk assessment with a focus on developmental neurotoxicity we evaluated the strength of evidence for associations of cadmium exposures with declines in IQ by conducting a systematic review and confidence rating. We searched peer-reviewed studies published in English between 2012 and July 2021 and identified 15 eligible studies...
Air pollution and dust pollution are major urban environmental issues, with road dust being a potential source and a pathway for human exposure. The developing megacities of India, where the population may spend a significant portion of their working lives close to the roadside, including consuming street food, have obvious source–pathway–receptor...
The otoliths (N = 12) of freshwater invasive species tilapia (Tilapia mossambicus) collected from two water bodies located at Kolkata and Bangalore, India, were analyzed for stable isotopes (δ18O, δ14C) and major and trace elements in order to assess the suitability of using otoliths as a tracer of aquatic environmental changes. The stable isotope...
Present study had documented total mercury levels in six commonly consumed fish species, and performed a cross-sectional study on local residents to gauge their intake of fish (via dietary survey) and mercury exposure (via hair biomarker analyses). Mean total mercury content in edible composites of locally-caught fishes (topse, hilsa, mackerel, top...
The distribution of total mercury (HgT) in surface sediments (0-5 cm; n = 12; particle size < 63 μm) and
representative biota (benthic polychaetes, bivalve mollusks and finfish) were observed in the Sundarban
mangrove wetland and adjacent regions nearby the Indian Ganges river estuary. Relatively low concentrations of HgT were measured in sediments...
The general concern for arsenic in the marine environment is associated with its wide distribution and potential toxicity. In the present work, concentrations and chemical speciation of arsenic were characterized in sediments and representative biota from the Indian Sundarban, the largest continuous mangrove tract formed at the mouth of the Hugli (...
The present work is the first attempt to compare the data of a comprehensive study of the origin and distribution of 16 priority pollutant polycyclic aromatic hydrocarbons (PAHs) in surface sediments (<63 μm) from 18 sampling stations, 9 from Sundarban of Bangladesh and 9 from Indian counterpart. Σ19PAHs concentration in sediments showed wide varia...
A sequential extraction procedure was carried out to determinate the concentrations of 11 elements (Al, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn) in different geochemical phases of sediments collected along the Hugli (Ganges) River Estuary and in the Sundarban mangrove wetland, eastern coastal part of India. The chemical speciation of elements was de...
Persistent organic pollutants (POPs) are semivolatile organic compounds of special concern because of their toxicity, persistence, long-range transport and bioaccumulation potential. They are present in the marine environment, notably in coastal areas affected by municipal sewage, agricultural and aquaculture effluents, industry and shipping traffi...
The work presents an extended database (n = 123) of total mercury (THg) in fine-grained sediment fraction (<63 μm) of core samples in 10 sampling stations of the Sundarban mangrove wetland, India, formed at the estuarine realm of the Hugli (Ganga) River. Results revealed a wide range of spatial, seasonal, and intertidal flat variations of THg (7.3...
The origin and distribution of 19 priority pollutant polycyclic aromatic hydrocarbons (PAHs) in core sediments (<63 μm) from the Sundarban mangrove wetland, northeastern part of Bay of Bengal, India, were investigated by gas-chromatography/mass spectrometry (GC/MS). Sedimentary organic carbon and textural properties were also analyzed in order to a...
This study was performed to elucidate the distribution, concentration trend and possible sources of total mercury (HgT) and methylmercury (MeHg) in sediment cores (<63 μm particle size; n = 75) of Sundarban mangrove wetland, northeastern part of the Bay of Bengal, India. Total mercury was determined by atomic absorption spectrometry (AAS) in a Leco...
The study reports the first assessment for the quantification and speciation of butyltins (BTs) in surface marine sediment samples (0-5 cm) from intertidal mudflats of Sundarban mangrove wetland along with the Hugli (Ganges) river basin, eastern coastal part of India. Concentrations of tributyltin (TBT), dibutyltin (DBT) and monobutyltin (MBT) were...
This article reports on the concentration of selected trace elements (Mn, Zn, Cr, Cu, Ba, As, B, V, and Hg) and major elements (Fe and Al) from the intertidal sediment cores from Sundarban wetland, India. This is a typical meso-macrotidal estuarine area affected by domestic and industrial activities located upstream. The overall concentrations rang...
The distribution and potential sources of 16 polycyclic aromatic hydrocarbons (PAHs) in sediment cores (\63 lm particle size) of the Sundarban mangrove wetland, northeastern coast of Bay of Bengal (India), were investigated by gas chromatography coupled to mass spectrometry. The total concentrations of 16 PAHs (P16PAHs) ranged from 132 to 2938 ng/g...
The paper presents the first document to identify the enrichment pattern of acid leachable trace metals (ALTMs) such as Fe, Mn, Cr, Cu, Ni, Pb, Cd, Co, Mo, Ag,
As and Ba and their relationship with sediment quality parameters (pH, organic carbon, carbonates and texture) in core sediments (\63 lm particle size) from Indian Sunderban
mangrove wetland...
The paper presents the first comprehensive account of congener profiles of polycyclic
aromatic hydrocarbons (PAHs) in intertidal bivalve mollusks [Meretrix meretrix, Macoma birmanica, and Sanguilonaria (Soletellina) acuminata] of Sunderban mangrove wetland (India). The main aim of this work was to use the bivalves as bioindicators of the contaminat...
This paper presents a comprehensive account regarding concentration, distribution and possible sources of trace elements (Al,
Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn) in 20–30 cm sediment cores (<63μm particle size) collected at the confluence of the Ganges
River and Bay of Bengal (Sunderban wetland, India). This work aims to evaluate the fluvio-marine...
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The aim of this paper was to obtain the first screening ecotoxicological risk evaluation in the Sunderban wetlands, the largest prograding delta in the estuarine phase of the River Ganges. The characterization of exposure was conducted by means of an extensive survey of several persistent organic pollutants (PAHs, PCBs, DDTs, PBDEs, HCHs, HCB) meas...
This is a preliminary report on total mercury (T(Hg)) in core sediments (<63 microm particle size) of Sunderban mangrove wetland, northeastern part of the Bay of Bengal, India. Cold vapor atomic absorption spectrometry (CVAAS) was used for T(Hg) determination. The concentration varies from 9.8 to 535.1 ppb (ngg(-1)). Results revealed variations ove...
The paper presents the first comprehensive survey of congener profiles of polychlorinated biphenyls (PCBs) in core sediment samples (<63 microm particle size) covering seven sites in Sunderban mangrove Wetland, north-eastern part of the Bay of Bengal. Results pointed out a non-homogenous contamination of the wetland with Sigma23PCB values ranging f...
The paper documents a detailed account of spatial distribution and possible sourcesof major elements along with heavy metals in fine grained fractions (<63 μm) of coresediments collected from seven sites in Sunderban wetland, northeastern part of Bay ofBengal, India. This work aims to evaluate the fluvio-marine and geochemical processesinfluencing...
Mercury concentrations (HgT) in fine-grained fraction (<63μm) of core sediments of the Hugli–Matla–Bidyadhari estuarine complex, India were analyzed.
Results revealed a wide range of spatial variations (<4–93ngg−1 dry weight) with a definite enhancement level at the lower stretch of the estuarine complex infested with mangrove plants,
which might a...
Organochlorine pesticides (OCPs) are an important potential component of chemical pollutants used extensively for agriculture and sanitation purposes in India as these are comparatively cheap and effective. These persistent organic compounds such as HCH isomers, DDT and its metabolites are the predominant chemical contaminants found along the India...
This paper presents the first comprehensive report of the organochlorine pesticide residues (OCs) such as hexachlorocyclohexane isomers (HCHs), dichlorodiphenyltrichloroethane and its six metabolites (DDTs), and hexachlorobenzene (HCB) in core sediments (<63-microm particle size) from the Indian Sunderban wetland. The pooled mean values of the mass...
The suitability of using four bivalve molluscs (Sanguinolaria acuminata, Anadara granosa,
Meretrix meretrix, and Pelecyora trigona) in biomonitoring of heavy metals (Cu, Pb, Cd,
Zn, and Hg) collected from intertidal regions of the Sunderban mangrove wetland, Northeastern part of the Bay of Bengal, were evaluated. Both species dependent variability...
The paper presents the first comprehensive survey of congener profiles (12 congeners) of polybrominated diphenyl ethers (PBDEs) in core sediment samples (<63 microm) covering seven sites in Sundarban mangrove wetland (India). Gas-chromatographic analyses were carried out in GC-Ms/Ms for tri- to hepta- brominated congeners. Results pointed out a non...
The paper presents the first document regarding concentration, distribution and possible sources of selected trace elements (Cu, Fe, Mn, Zn, Cr, Co, Ni, Pb, Al, B and Ba) in core sediments (<63 micro particle size) from the lower stretch of Hugli (Ganges) estuary, northeast coast of Bay of Bengal by ICP-AES and EDXRF to evaluate geochemical process...
The paper presents the first comprehensive survey of congener profiles (12 congeners) of polybrominated diphenyl ethers (PBDEs) in core sediment samples (<63 lm) covering seven sites in Sundarban mangrove wetland (India). Gas-chromatographic analyses were carried out in GC–Ms/Ms for tri-to hepta-brominated congeners. Results pointed out a non-homog...